diff --git a/paris-processor/src/main/java/com/airbnb/paris/processor/StyleAppliersWriter.kt b/paris-processor/src/main/java/com/airbnb/paris/processor/StyleAppliersWriter.kt
index 33b04f01..141b482c 100644
--- a/paris-processor/src/main/java/com/airbnb/paris/processor/StyleAppliersWriter.kt
+++ b/paris-processor/src/main/java/com/airbnb/paris/processor/StyleAppliersWriter.kt
@@ -10,13 +10,8 @@ import javax.annotation.processing.*
 import javax.lang.model.element.*
 import javax.lang.model.type.*
 import javax.lang.model.util.*
-import kotlin.Boolean
-import kotlin.String
-import kotlin.apply
 import kotlin.check
-import kotlin.let
 
-// TODO  Add @UiThread annotation to StyleApplier classes
 internal object StyleAppliersWriter {
 
     val styleablesTree = StyleablesTree()
@@ -40,6 +35,7 @@ internal object StyleAppliersWriter {
         val styleApplierClassName = styleableInfo.styleApplierClassName()
 
         val styleTypeBuilder = TypeSpec.classBuilder(styleApplierClassName)
+                .addAnnotation(ClassNames.ANDROID_UI_THREAD)
                 .addModifiers(Modifier.PUBLIC, Modifier.FINAL)
                 .superclass(ParameterizedTypeName.get(ParisProcessor.STYLE_APPLIER_CLASS_NAME, TypeName.get(styleableInfo.elementType), TypeName.get(styleableInfo.viewElementType)))
                 .addMethod(buildConstructorMethod(styleableInfo))
@@ -297,6 +293,7 @@ internal object StyleAppliersWriter {
         // StyleBuilder inner class
         val styleBuilderClassName = styleApplierClassName.nestedClass("StyleBuilder")
         val styleBuilderTypeBuilder = TypeSpec.classBuilder(styleBuilderClassName)
+                .addAnnotation(ClassNames.ANDROID_UI_THREAD)
                 .addModifiers(Modifier.PUBLIC, Modifier.STATIC, Modifier.FINAL)
                 .superclass(ParameterizedTypeName.get(baseClassName, styleBuilderClassName, styleApplierClassName))
                 .addMethod(buildStyleBuilderApplierConstructorMethod(styleApplierClassName))
@@ -338,10 +335,10 @@ internal object StyleAppliersWriter {
             StyleInfo.Kind.FIELD -> builder.addStatement("add(\$T.\$L)", styleInfo.enclosingElement, styleInfo.elementName)
             StyleInfo.Kind.METHOD -> {
                 builder
-                        .addStatement("consumeSimpleStyleBuilder()")
+                        .addStatement("consumeProgrammaticStyleBuilder()")
                         .addStatement("debugName(\$S)", styleInfo.formattedName)
                         .addStatement("\$T.\$L(this)", styleInfo.enclosingElement, styleInfo.elementName)
-                        .addStatement("consumeSimpleStyleBuilder()")
+                        .addStatement("consumeProgrammaticStyleBuilder()")
             }
             StyleInfo.Kind.STYLE_RES -> {
                 builder.addStatement("add(\$L)", styleInfo.styleResourceCode)
diff --git a/paris-processor/src/main/java/com/airbnb/paris/processor/utils/ClassNames.kt b/paris-processor/src/main/java/com/airbnb/paris/processor/utils/ClassNames.kt
index c488bb3c..3071e66c 100644
--- a/paris-processor/src/main/java/com/airbnb/paris/processor/utils/ClassNames.kt
+++ b/paris-processor/src/main/java/com/airbnb/paris/processor/utils/ClassNames.kt
@@ -17,4 +17,5 @@ internal object ClassNames {
     val ANDROID_INTEGER_RES = "android.support.annotation.IntegerRes".className()
     val ANDROID_STRING_RES = "android.support.annotation.StringRes".className()
     val ANDROID_STYLE_RES = "android.support.annotation.StyleRes".className()
+    val ANDROID_UI_THREAD = "android.support.annotation.UiThread".className()
 }
diff --git a/paris-test/src/test/resources/attrs/MyViewStyleApplier.java b/paris-test/src/test/resources/attrs/MyViewStyleApplier.java
index 282be89c..65877b07 100644
--- a/paris-test/src/test/resources/attrs/MyViewStyleApplier.java
+++ b/paris-test/src/test/resources/attrs/MyViewStyleApplier.java
@@ -12,6 +12,7 @@
 import android.support.annotation.FractionRes;
 import android.support.annotation.IntegerRes;
 import android.support.annotation.StringRes;
+import android.support.annotation.UiThread;
 import com.airbnb.paris.Style;
 import com.airbnb.paris.StyleApplier;
 import com.airbnb.paris.TypedArrayWrapper;
@@ -20,256 +21,258 @@
 import java.lang.Override;
 import java.lang.String;
 
+@UiThread
 public final class MyViewStyleApplier extends StyleApplier<MyView, MyView> {
-    public MyViewStyleApplier(MyView view) {
-        super(view);
-    }
-
-    @Override
-    protected void applyParent(Style style) {
-        new ViewProxyStyleApplier(getView()).apply(style);
-    }
-
-    @Override
-    protected int[] attributes() {
-        return R.styleable.Formats;
-    }
-
-    @Override
-    protected void processStyleableFields(Style style, TypedArrayWrapper a) {
-        Resources res = getView().getContext().getResources();
-    }
-
-    @Override
-    protected void processAttributes(Style style, TypedArrayWrapper a) {
-        Resources res = getView().getContext().getResources();
-        if (a.hasValue(R.styleable.Formats_formatBoolean)) {
-            getProxy().formatBoolean(a.getBoolean(R.styleable.Formats_formatBoolean, false));
-        }
-        if (a.hasValue(R.styleable.Formats_formatBoolean)) {
-            getProxy().formatBoolean(a.getResourceId(R.styleable.Formats_formatBoolean, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatBoolean2)) {
-            getProxy().formatBoolean2(a.getResourceId(R.styleable.Formats_formatBoolean2, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatColor)) {
-            getProxy().formatColor(a.getColor(R.styleable.Formats_formatColor, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatDimension)) {
-            getProxy().formatDimension_res(a.getResourceId(R.styleable.Formats_formatDimension, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatDimension)) {
-            getProxy().formatDimension_px(a.getDimensionPixelSize(R.styleable.Formats_formatDimension, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatDimension)) {
-            getProxy().formatDimension_LayoutDimension(a.getLayoutDimension(R.styleable.Formats_formatDimension, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatEnum)) {
-            getProxy().formatEnum(a.getInt(R.styleable.Formats_formatEnum, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatFlag)) {
-            getProxy().formatFlag(a.getInt(R.styleable.Formats_formatFlag, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatFloat)) {
-            getProxy().formatFloat(a.getFloat(R.styleable.Formats_formatFloat, -1f));
-        }
-        if (a.hasValue(R.styleable.Formats_formatFraction)) {
-            getProxy().formatFraction(a.getFraction(R.styleable.Formats_formatFraction, 2, 3, -1f));
-        }
-        if (a.hasValue(R.styleable.Formats_formatInteger)) {
-            getProxy().formatInteger(a.getInt(R.styleable.Formats_formatInteger, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference)) {
-            getProxy().formatReference_CharSequenceArray(a.getTextArray(R.styleable.Formats_formatReference));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference)) {
-            getProxy().formatReference_res(a.getResourceId(R.styleable.Formats_formatReference, -1));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference2)) {
-            getProxy().formatReference2_ColorStateList(a.getColorStateList(R.styleable.Formats_formatReference2));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference3)) {
-            getProxy().formatReference3_Drawable(a.getDrawable(R.styleable.Formats_formatReference3));
-        }
-        if (a.hasValue(R.styleable.Formats_formatString)) {
-            getProxy().formatString_CharSequence(a.getText(R.styleable.Formats_formatString));
-        }
-        if (a.hasValue(R.styleable.Formats_formatString2)) {
-            getProxy().formatString2_String(a.getString(R.styleable.Formats_formatString2));
-        }
-    }
-
-    public StyleBuilder builder() {
-        return new StyleBuilder(this);
-    }
-
-    public void applyDefault() {
-    }
-
-    public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
-        public BaseStyleBuilder(A applier) {
-            super(applier);
-        }
-
-        public BaseStyleBuilder() {
-        }
-
-        public B formatBoolean(boolean value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatBoolean], value);
-            return (B) this;
-        }
-
-        public B formatBoolean(@BoolRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatBoolean], resId);
-            return (B) this;
-        }
-
-        public B formatBoolean2(@AnyRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatBoolean2], resId);
-            return (B) this;
-        }
-
-        public B formatColor(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatColor], value);
-            return (B) this;
-        }
-
-        public B formatColorRes(@ColorRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatColor], resId);
-            return (B) this;
-        }
-
-        public B formatDimension(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
-            return (B) this;
-        }
-
-        public B formatDimensionRes(@DimenRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatDimension], resId);
-            return (B) this;
-        }
-
-        public B formatDimensionDp(int value) {
-            getBuilder().putDp(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
-            return (B) this;
-        }
-
-        public B formatEnum(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatEnum], value);
-            return (B) this;
-        }
-
-        public B formatEnumRes(@IntegerRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatEnum], resId);
-            return (B) this;
-        }
-
-        public B formatFlag(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFlag], value);
-            return (B) this;
-        }
-
-        public B formatFlagRes(@IntegerRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFlag], resId);
-            return (B) this;
-        }
-
-        public B formatFloat(float value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFloat], value);
-            return (B) this;
-        }
-
-        public B formatFloat(@AnyRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFloat], resId);
-            return (B) this;
-        }
-
-        public B formatFraction(float value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFraction], value);
-            return (B) this;
-        }
-
-        public B formatFraction(@FractionRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFraction], resId);
-            return (B) this;
-        }
-
-        public B formatInteger(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatInteger], value);
-            return (B) this;
-        }
-
-        public B formatIntegerRes(@IntegerRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatInteger], resId);
-            return (B) this;
-        }
-
-        public B formatReference(CharSequence[] value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference], value);
-            return (B) this;
-        }
-
-        public B formatReference(@ArrayRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference], resId);
-            return (B) this;
-        }
-
-        public B formatReference2(ColorStateList value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference2], value);
-            return (B) this;
-        }
-
-        public B formatReference2(@ColorRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference2], resId);
-            return (B) this;
-        }
-
-        public B formatReference3(Drawable value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference3], value);
-            return (B) this;
-        }
-
-        public B formatReference3(@DrawableRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference3], resId);
-            return (B) this;
-        }
-
-        public B formatString(CharSequence value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString], value);
-            return (B) this;
-        }
-
-        public B formatString(@StringRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString], resId);
-            return (B) this;
-        }
-
-        public B formatString2(String value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString2], value);
-            return (B) this;
-        }
-
-        public B formatString2(@StringRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString2], resId);
-            return (B) this;
-        }
-
-        public B applyTo(MyView view) {
-            new MyViewStyleApplier(view).apply(build());
-            return (B) this;
-        }
-    }
-
-    public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
-        public StyleBuilder(MyViewStyleApplier applier) {
-            super(applier);
-        }
-
-        public StyleBuilder() {
-        }
-
-        public StyleBuilder addDefault() {
-            return this;
-        }
+  public MyViewStyleApplier(MyView view) {
+    super(view);
+  }
+
+  @Override
+  protected void applyParent(Style style) {
+    new ViewProxyStyleApplier(getView()).apply(style);
+  }
+
+  @Override
+  protected int[] attributes() {
+    return R.styleable.Formats;
+  }
+
+  @Override
+  protected void processStyleableFields(Style style, TypedArrayWrapper a) {
+    Resources res = getView().getContext().getResources();
+  }
+
+  @Override
+  protected void processAttributes(Style style, TypedArrayWrapper a) {
+    Resources res = getView().getContext().getResources();
+    if (a.hasValue(R.styleable.Formats_formatBoolean)) {
+      getProxy().formatBoolean(a.getBoolean(R.styleable.Formats_formatBoolean, false));
     }
+    if (a.hasValue(R.styleable.Formats_formatBoolean)) {
+      getProxy().formatBoolean(a.getResourceId(R.styleable.Formats_formatBoolean, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatBoolean2)) {
+      getProxy().formatBoolean2(a.getResourceId(R.styleable.Formats_formatBoolean2, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatColor)) {
+      getProxy().formatColor(a.getColor(R.styleable.Formats_formatColor, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatDimension)) {
+      getProxy().formatDimension_res(a.getResourceId(R.styleable.Formats_formatDimension, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatDimension)) {
+      getProxy().formatDimension_px(a.getDimensionPixelSize(R.styleable.Formats_formatDimension, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatDimension)) {
+      getProxy().formatDimension_LayoutDimension(a.getLayoutDimension(R.styleable.Formats_formatDimension, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatEnum)) {
+      getProxy().formatEnum(a.getInt(R.styleable.Formats_formatEnum, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatFlag)) {
+      getProxy().formatFlag(a.getInt(R.styleable.Formats_formatFlag, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatFloat)) {
+      getProxy().formatFloat(a.getFloat(R.styleable.Formats_formatFloat, -1f));
+    }
+    if (a.hasValue(R.styleable.Formats_formatFraction)) {
+      getProxy().formatFraction(a.getFraction(R.styleable.Formats_formatFraction, 2, 3, -1f));
+    }
+    if (a.hasValue(R.styleable.Formats_formatInteger)) {
+      getProxy().formatInteger(a.getInt(R.styleable.Formats_formatInteger, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference)) {
+      getProxy().formatReference_CharSequenceArray(a.getTextArray(R.styleable.Formats_formatReference));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference)) {
+      getProxy().formatReference_res(a.getResourceId(R.styleable.Formats_formatReference, -1));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference2)) {
+      getProxy().formatReference2_ColorStateList(a.getColorStateList(R.styleable.Formats_formatReference2));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference3)) {
+      getProxy().formatReference3_Drawable(a.getDrawable(R.styleable.Formats_formatReference3));
+    }
+    if (a.hasValue(R.styleable.Formats_formatString)) {
+      getProxy().formatString_CharSequence(a.getText(R.styleable.Formats_formatString));
+    }
+    if (a.hasValue(R.styleable.Formats_formatString2)) {
+      getProxy().formatString2_String(a.getString(R.styleable.Formats_formatString2));
+    }
+  }
+
+  public StyleBuilder builder() {
+    return new StyleBuilder(this);
+  }
+
+  public void applyDefault() {
+  }
+
+  public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
+    public BaseStyleBuilder(A applier) {
+      super(applier);
+    }
+
+    public BaseStyleBuilder() {
+    }
+
+    public B formatBoolean(boolean value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatBoolean], value);
+      return (B) this;
+    }
+
+    public B formatBoolean(@BoolRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatBoolean], resId);
+      return (B) this;
+    }
+
+    public B formatBoolean2(@AnyRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatBoolean2], resId);
+      return (B) this;
+    }
+
+    public B formatColor(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatColor], value);
+      return (B) this;
+    }
+
+    public B formatColorRes(@ColorRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatColor], resId);
+      return (B) this;
+    }
+
+    public B formatDimension(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
+      return (B) this;
+    }
+
+    public B formatDimensionRes(@DimenRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatDimension], resId);
+      return (B) this;
+    }
+
+    public B formatDimensionDp(int value) {
+      getBuilder().putDp(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
+      return (B) this;
+    }
+
+    public B formatEnum(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatEnum], value);
+      return (B) this;
+    }
+
+    public B formatEnumRes(@IntegerRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatEnum], resId);
+      return (B) this;
+    }
+
+    public B formatFlag(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFlag], value);
+      return (B) this;
+    }
+
+    public B formatFlagRes(@IntegerRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFlag], resId);
+      return (B) this;
+    }
+
+    public B formatFloat(float value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFloat], value);
+      return (B) this;
+    }
+
+    public B formatFloat(@AnyRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFloat], resId);
+      return (B) this;
+    }
+
+    public B formatFraction(float value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFraction], value);
+      return (B) this;
+    }
+
+    public B formatFraction(@FractionRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFraction], resId);
+      return (B) this;
+    }
+
+    public B formatInteger(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatInteger], value);
+      return (B) this;
+    }
+
+    public B formatIntegerRes(@IntegerRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatInteger], resId);
+      return (B) this;
+    }
+
+    public B formatReference(CharSequence[] value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference], value);
+      return (B) this;
+    }
+
+    public B formatReference(@ArrayRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference], resId);
+      return (B) this;
+    }
+
+    public B formatReference2(ColorStateList value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference2], value);
+      return (B) this;
+    }
+
+    public B formatReference2(@ColorRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference2], resId);
+      return (B) this;
+    }
+
+    public B formatReference3(Drawable value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference3], value);
+      return (B) this;
+    }
+
+    public B formatReference3(@DrawableRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference3], resId);
+      return (B) this;
+    }
+
+    public B formatString(CharSequence value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString], value);
+      return (B) this;
+    }
+
+    public B formatString(@StringRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString], resId);
+      return (B) this;
+    }
+
+    public B formatString2(String value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString2], value);
+      return (B) this;
+    }
+
+    public B formatString2(@StringRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString2], resId);
+      return (B) this;
+    }
+
+    public B applyTo(MyView view) {
+      new MyViewStyleApplier(view).apply(build());
+      return (B) this;
+    }
+  }
+
+  @UiThread
+  public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
+    public StyleBuilder(MyViewStyleApplier applier) {
+      super(applier);
+    }
+
+    public StyleBuilder() {
+    }
+
+    public StyleBuilder addDefault() {
+      return this;
+    }
+  }
 }
\ No newline at end of file
diff --git a/paris-test/src/test/resources/default_values/MyViewStyleApplier.java b/paris-test/src/test/resources/default_values/MyViewStyleApplier.java
index 99e8e502..ff6a1f9a 100644
--- a/paris-test/src/test/resources/default_values/MyViewStyleApplier.java
+++ b/paris-test/src/test/resources/default_values/MyViewStyleApplier.java
@@ -12,6 +12,7 @@
 import android.support.annotation.FractionRes;
 import android.support.annotation.IntegerRes;
 import android.support.annotation.StringRes;
+import android.support.annotation.UiThread;
 import com.airbnb.paris.Style;
 import com.airbnb.paris.StyleApplier;
 import com.airbnb.paris.TypedArrayWrapper;
@@ -21,292 +22,294 @@
 import java.lang.Override;
 import java.lang.String;
 
+@UiThread
 public final class MyViewStyleApplier extends StyleApplier<MyView, MyView> {
-    public MyViewStyleApplier(MyView view) {
-        super(view);
-    }
-
-    @Override
-    protected void applyParent(Style style) {
-        new ViewProxyStyleApplier(getView()).apply(style);
-    }
-
-    @Override
-    protected int[] attributes() {
-        return R.styleable.Formats;
-    }
-
-    @Override
-    public int[] attributesWithDefaultValue() {
-        return new int[] {R.styleable.Formats_formatBoolean,R.styleable.Formats_formatColor,R.styleable.Formats_formatDimension,R.styleable.Formats_formatEnum,R.styleable.Formats_formatFlag,R.styleable.Formats_formatFloat,R.styleable.Formats_formatFraction,R.styleable.Formats_formatInteger,R.styleable.Formats_formatReference,R.styleable.Formats_formatReference2,R.styleable.Formats_formatReference3,R.styleable.Formats_formatString,R.styleable.Formats_formatString2,};
-    }
-
-    @Override
-    protected void processStyleableFields(Style style, TypedArrayWrapper a) {
-        Resources res = getView().getContext().getResources();
-    }
-
-    @Override
-    protected void processAttributes(Style style, TypedArrayWrapper a) {
-        Resources res = getView().getContext().getResources();
-        if (a.hasValue(R.styleable.Formats_formatBoolean)) {
-            getProxy().formatBoolean(a.getBoolean(R.styleable.Formats_formatBoolean, false));
-        }
-        else {
-            getProxy().formatBoolean(res.getBoolean(R.bool.format_boolean));
-        }
-        if (a.hasValue(R.styleable.Formats_formatColor)) {
-            getProxy().formatColor(a.getColor(R.styleable.Formats_formatColor, -1));
-        }
-        else {
-            getProxy().formatColor(res.getColor(R.color.format_color));
-        }
-        if (a.hasValue(R.styleable.Formats_formatDimension)) {
-            getProxy().formatDimension_px(a.getDimensionPixelSize(R.styleable.Formats_formatDimension, -1));
-        }
-        else {
-            getProxy().formatDimension_px(res.getDimensionPixelSize(R.dimen.format_dimension));
-        }
-        if (a.hasValue(R.styleable.Formats_formatDimension)) {
-            getProxy().formatDimension_LayoutDimension(a.getLayoutDimension(R.styleable.Formats_formatDimension, -1));
-        }
-        else {
-            getProxy().formatDimension_LayoutDimension(ResourcesExtensionsKt.getLayoutDimension(res, R.dimen.format_dimension));
-        }
-        if (a.hasValue(R.styleable.Formats_formatEnum)) {
-            getProxy().formatEnum(a.getInt(R.styleable.Formats_formatEnum, -1));
-        }
-        else {
-            getProxy().formatEnum(res.getInteger(R.integer.format_enum));
-        }
-        if (a.hasValue(R.styleable.Formats_formatFlag)) {
-            getProxy().formatFlag(a.getInt(R.styleable.Formats_formatFlag, -1));
-        }
-        else {
-            getProxy().formatFlag(res.getInteger(R.integer.format_flag));
-        }
-        if (a.hasValue(R.styleable.Formats_formatFloat)) {
-            getProxy().formatFloat(a.getFloat(R.styleable.Formats_formatFloat, -1f));
-        }
-        else {
-            getProxy().formatFloat(ResourcesExtensionsKt.getFloat(res, R.dimen.format_float));
-        }
-        if (a.hasValue(R.styleable.Formats_formatFraction)) {
-            getProxy().formatFraction(a.getFraction(R.styleable.Formats_formatFraction, 2, 3, -1f));
-        }
-        else {
-            getProxy().formatFraction(res.getFraction(R.fraction.format_fraction, 2, 3));
-        }
-        if (a.hasValue(R.styleable.Formats_formatInteger)) {
-            getProxy().formatInteger(a.getInt(R.styleable.Formats_formatInteger, -1));
-        }
-        else {
-            getProxy().formatInteger(res.getInteger(R.integer.format_integer));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference)) {
-            getProxy().formatReference_CharSequenceArray(a.getTextArray(R.styleable.Formats_formatReference));
-        }
-        else {
-            getProxy().formatReference_CharSequenceArray(res.getTextArray(R.array.format_string_array));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference)) {
-            getProxy().formatReference_res(a.getResourceId(R.styleable.Formats_formatReference, -1));
-        }
-        else {
-            getProxy().formatReference_res(R.bool.active);
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference2)) {
-            getProxy().formatReference_ColorStateList(a.getColorStateList(R.styleable.Formats_formatReference2));
-        }
-        else {
-            getProxy().formatReference_ColorStateList(res.getColorStateList(R.color.format_color_state_list));
-        }
-        if (a.hasValue(R.styleable.Formats_formatReference3)) {
-            getProxy().formatReference_Drawable(a.getDrawable(R.styleable.Formats_formatReference3));
-        }
-        else {
-            getProxy().formatReference_Drawable(res.getDrawable(R.drawable.format_drawable));
-        }
-        if (a.hasValue(R.styleable.Formats_formatString)) {
-            getProxy().formatString_CharSequence(a.getText(R.styleable.Formats_formatString));
-        }
-        else {
-            getProxy().formatString_CharSequence(res.getText(R.string.format_char_sequence));
-        }
-        if (a.hasValue(R.styleable.Formats_formatString2)) {
-            getProxy().formatString_String(a.getString(R.styleable.Formats_formatString2));
-        }
-        else {
-            getProxy().formatString_String(res.getString(R.string.format_string));
-        }
-    }
-
-    public StyleBuilder builder() {
-        return new StyleBuilder(this);
-    }
-
-    public void applyDefault() {
-    }
-
-    public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
-        public BaseStyleBuilder(A applier) {
-            super(applier);
-        }
-
-        public BaseStyleBuilder() {
-        }
-
-        public B formatBoolean(boolean value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatBoolean], value);
-            return (B) this;
-        }
-
-        public B formatBoolean(@BoolRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatBoolean], resId);
-            return (B) this;
-        }
-
-        public B formatColor(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatColor], value);
-            return (B) this;
-        }
-
-        public B formatColorRes(@ColorRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatColor], resId);
-            return (B) this;
-        }
-
-        public B formatDimension(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
-            return (B) this;
-        }
-
-        public B formatDimensionRes(@DimenRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatDimension], resId);
-            return (B) this;
-        }
-
-        public B formatDimensionDp(int value) {
-            getBuilder().putDp(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
-            return (B) this;
-        }
-
-        public B formatEnum(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatEnum], value);
-            return (B) this;
-        }
-
-        public B formatEnumRes(@IntegerRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatEnum], resId);
-            return (B) this;
-        }
-
-        public B formatFlag(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFlag], value);
-            return (B) this;
-        }
-
-        public B formatFlagRes(@IntegerRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFlag], resId);
-            return (B) this;
-        }
-
-        public B formatFloat(float value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFloat], value);
-            return (B) this;
-        }
-
-        public B formatFloat(@AnyRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFloat], resId);
-            return (B) this;
-        }
-
-        public B formatFraction(float value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFraction], value);
-            return (B) this;
-        }
-
-        public B formatFraction(@FractionRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFraction], resId);
-            return (B) this;
-        }
-
-        public B formatInteger(int value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatInteger], value);
-            return (B) this;
-        }
-
-        public B formatIntegerRes(@IntegerRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatInteger], resId);
-            return (B) this;
-        }
-
-        public B formatReference(CharSequence[] value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference], value);
-            return (B) this;
-        }
-
-        public B formatReference(@ArrayRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference], resId);
-            return (B) this;
-        }
-
-        public B formatReference2(ColorStateList value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference2], value);
-            return (B) this;
-        }
-
-        public B formatReference2(@ColorRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference2], resId);
-            return (B) this;
-        }
-
-        public B formatReference3(Drawable value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference3], value);
-            return (B) this;
-        }
-
-        public B formatReference3(@DrawableRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference3], resId);
-            return (B) this;
-        }
-
-        public B formatString(CharSequence value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString], value);
-            return (B) this;
-        }
-
-        public B formatString(@StringRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString], resId);
-            return (B) this;
-        }
-
-        public B formatString2(String value) {
-            getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString2], value);
-            return (B) this;
-        }
-
-        public B formatString2(@StringRes int resId) {
-            getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString2], resId);
-            return (B) this;
-        }
-
-        public B applyTo(MyView view) {
-            new MyViewStyleApplier(view).apply(build());
-            return (B) this;
-        }
-    }
-
-    public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
-        public StyleBuilder(MyViewStyleApplier applier) {
-            super(applier);
-        }
-
-        public StyleBuilder() {
-        }
-
-        public StyleBuilder addDefault() {
-            return this;
-        }
+  public MyViewStyleApplier(MyView view) {
+    super(view);
+  }
+
+  @Override
+  protected void applyParent(Style style) {
+    new ViewProxyStyleApplier(getView()).apply(style);
+  }
+
+  @Override
+  protected int[] attributes() {
+    return R.styleable.Formats;
+  }
+
+  @Override
+  public int[] attributesWithDefaultValue() {
+    return new int[] {R.styleable.Formats_formatBoolean,R.styleable.Formats_formatColor,R.styleable.Formats_formatDimension,R.styleable.Formats_formatEnum,R.styleable.Formats_formatFlag,R.styleable.Formats_formatFloat,R.styleable.Formats_formatFraction,R.styleable.Formats_formatInteger,R.styleable.Formats_formatReference,R.styleable.Formats_formatReference2,R.styleable.Formats_formatReference3,R.styleable.Formats_formatString,R.styleable.Formats_formatString2,};
+  }
+
+  @Override
+  protected void processStyleableFields(Style style, TypedArrayWrapper a) {
+    Resources res = getView().getContext().getResources();
+  }
+
+  @Override
+  protected void processAttributes(Style style, TypedArrayWrapper a) {
+    Resources res = getView().getContext().getResources();
+    if (a.hasValue(R.styleable.Formats_formatBoolean)) {
+      getProxy().formatBoolean(a.getBoolean(R.styleable.Formats_formatBoolean, false));
     }
+    else {
+      getProxy().formatBoolean(res.getBoolean(R.bool.format_boolean));
+    }
+    if (a.hasValue(R.styleable.Formats_formatColor)) {
+      getProxy().formatColor(a.getColor(R.styleable.Formats_formatColor, -1));
+    }
+    else {
+      getProxy().formatColor(res.getColor(R.color.format_color));
+    }
+    if (a.hasValue(R.styleable.Formats_formatDimension)) {
+      getProxy().formatDimension_px(a.getDimensionPixelSize(R.styleable.Formats_formatDimension, -1));
+    }
+    else {
+      getProxy().formatDimension_px(res.getDimensionPixelSize(R.dimen.format_dimension));
+    }
+    if (a.hasValue(R.styleable.Formats_formatDimension)) {
+      getProxy().formatDimension_LayoutDimension(a.getLayoutDimension(R.styleable.Formats_formatDimension, -1));
+    }
+    else {
+      getProxy().formatDimension_LayoutDimension(ResourcesExtensionsKt.getLayoutDimension(res, R.dimen.format_dimension));
+    }
+    if (a.hasValue(R.styleable.Formats_formatEnum)) {
+      getProxy().formatEnum(a.getInt(R.styleable.Formats_formatEnum, -1));
+    }
+    else {
+      getProxy().formatEnum(res.getInteger(R.integer.format_enum));
+    }
+    if (a.hasValue(R.styleable.Formats_formatFlag)) {
+      getProxy().formatFlag(a.getInt(R.styleable.Formats_formatFlag, -1));
+    }
+    else {
+      getProxy().formatFlag(res.getInteger(R.integer.format_flag));
+    }
+    if (a.hasValue(R.styleable.Formats_formatFloat)) {
+      getProxy().formatFloat(a.getFloat(R.styleable.Formats_formatFloat, -1f));
+    }
+    else {
+      getProxy().formatFloat(ResourcesExtensionsKt.getFloat(res, R.dimen.format_float));
+    }
+    if (a.hasValue(R.styleable.Formats_formatFraction)) {
+      getProxy().formatFraction(a.getFraction(R.styleable.Formats_formatFraction, 2, 3, -1f));
+    }
+    else {
+      getProxy().formatFraction(res.getFraction(R.fraction.format_fraction, 2, 3));
+    }
+    if (a.hasValue(R.styleable.Formats_formatInteger)) {
+      getProxy().formatInteger(a.getInt(R.styleable.Formats_formatInteger, -1));
+    }
+    else {
+      getProxy().formatInteger(res.getInteger(R.integer.format_integer));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference)) {
+      getProxy().formatReference_CharSequenceArray(a.getTextArray(R.styleable.Formats_formatReference));
+    }
+    else {
+      getProxy().formatReference_CharSequenceArray(res.getTextArray(R.array.format_string_array));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference)) {
+      getProxy().formatReference_res(a.getResourceId(R.styleable.Formats_formatReference, -1));
+    }
+    else {
+      getProxy().formatReference_res(R.bool.active);
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference2)) {
+      getProxy().formatReference_ColorStateList(a.getColorStateList(R.styleable.Formats_formatReference2));
+    }
+    else {
+      getProxy().formatReference_ColorStateList(res.getColorStateList(R.color.format_color_state_list));
+    }
+    if (a.hasValue(R.styleable.Formats_formatReference3)) {
+      getProxy().formatReference_Drawable(a.getDrawable(R.styleable.Formats_formatReference3));
+    }
+    else {
+      getProxy().formatReference_Drawable(res.getDrawable(R.drawable.format_drawable));
+    }
+    if (a.hasValue(R.styleable.Formats_formatString)) {
+      getProxy().formatString_CharSequence(a.getText(R.styleable.Formats_formatString));
+    }
+    else {
+      getProxy().formatString_CharSequence(res.getText(R.string.format_char_sequence));
+    }
+    if (a.hasValue(R.styleable.Formats_formatString2)) {
+      getProxy().formatString_String(a.getString(R.styleable.Formats_formatString2));
+    }
+    else {
+      getProxy().formatString_String(res.getString(R.string.format_string));
+    }
+  }
+
+  public StyleBuilder builder() {
+    return new StyleBuilder(this);
+  }
+
+  public void applyDefault() {
+  }
+
+  public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
+    public BaseStyleBuilder(A applier) {
+      super(applier);
+    }
+
+    public BaseStyleBuilder() {
+    }
+
+    public B formatBoolean(boolean value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatBoolean], value);
+      return (B) this;
+    }
+
+    public B formatBoolean(@BoolRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatBoolean], resId);
+      return (B) this;
+    }
+
+    public B formatColor(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatColor], value);
+      return (B) this;
+    }
+
+    public B formatColorRes(@ColorRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatColor], resId);
+      return (B) this;
+    }
+
+    public B formatDimension(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
+      return (B) this;
+    }
+
+    public B formatDimensionRes(@DimenRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatDimension], resId);
+      return (B) this;
+    }
+
+    public B formatDimensionDp(int value) {
+      getBuilder().putDp(R.styleable.Formats[R.styleable.Formats_formatDimension], value);
+      return (B) this;
+    }
+
+    public B formatEnum(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatEnum], value);
+      return (B) this;
+    }
+
+    public B formatEnumRes(@IntegerRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatEnum], resId);
+      return (B) this;
+    }
+
+    public B formatFlag(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFlag], value);
+      return (B) this;
+    }
+
+    public B formatFlagRes(@IntegerRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFlag], resId);
+      return (B) this;
+    }
+
+    public B formatFloat(float value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFloat], value);
+      return (B) this;
+    }
+
+    public B formatFloat(@AnyRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFloat], resId);
+      return (B) this;
+    }
+
+    public B formatFraction(float value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatFraction], value);
+      return (B) this;
+    }
+
+    public B formatFraction(@FractionRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatFraction], resId);
+      return (B) this;
+    }
+
+    public B formatInteger(int value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatInteger], value);
+      return (B) this;
+    }
+
+    public B formatIntegerRes(@IntegerRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatInteger], resId);
+      return (B) this;
+    }
+
+    public B formatReference(CharSequence[] value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference], value);
+      return (B) this;
+    }
+
+    public B formatReference(@ArrayRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference], resId);
+      return (B) this;
+    }
+
+    public B formatReference2(ColorStateList value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference2], value);
+      return (B) this;
+    }
+
+    public B formatReference2(@ColorRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference2], resId);
+      return (B) this;
+    }
+
+    public B formatReference3(Drawable value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatReference3], value);
+      return (B) this;
+    }
+
+    public B formatReference3(@DrawableRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatReference3], resId);
+      return (B) this;
+    }
+
+    public B formatString(CharSequence value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString], value);
+      return (B) this;
+    }
+
+    public B formatString(@StringRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString], resId);
+      return (B) this;
+    }
+
+    public B formatString2(String value) {
+      getBuilder().put(R.styleable.Formats[R.styleable.Formats_formatString2], value);
+      return (B) this;
+    }
+
+    public B formatString2(@StringRes int resId) {
+      getBuilder().putRes(R.styleable.Formats[R.styleable.Formats_formatString2], resId);
+      return (B) this;
+    }
+
+    public B applyTo(MyView view) {
+      new MyViewStyleApplier(view).apply(build());
+      return (B) this;
+    }
+  }
+
+  @UiThread
+  public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
+    public StyleBuilder(MyViewStyleApplier applier) {
+      super(applier);
+    }
+
+    public StyleBuilder() {
+    }
+
+    public StyleBuilder addDefault() {
+      return this;
+    }
+  }
 }
\ No newline at end of file
diff --git a/paris-test/src/test/resources/styleable_fields/MyViewStyleApplier.java b/paris-test/src/test/resources/styleable_fields/MyViewStyleApplier.java
index 4cbbdc75..58f42605 100644
--- a/paris-test/src/test/resources/styleable_fields/MyViewStyleApplier.java
+++ b/paris-test/src/test/resources/styleable_fields/MyViewStyleApplier.java
@@ -2,6 +2,7 @@
 
 import android.content.res.Resources;
 import android.support.annotation.StyleRes;
+import android.support.annotation.UiThread;
 import com.airbnb.paris.Style;
 import com.airbnb.paris.StyleApplier;
 import com.airbnb.paris.TypedArrayWrapper;
@@ -10,141 +11,143 @@
 import com.airbnb.paris.utils.StyleBuilderFunction;
 import java.lang.Override;
 
+@UiThread
 public final class MyViewStyleApplier extends StyleApplier<MyView, MyView> {
-    public MyViewStyleApplier(MyView view) {
-        super(view);
+  public MyViewStyleApplier(MyView view) {
+    super(view);
+  }
+
+  @Override
+  protected void applyParent(Style style) {
+    new ViewProxyStyleApplier(getView()).apply(style);
+  }
+
+  @Override
+  protected int[] attributes() {
+    return R.styleable.MyView;
+  }
+
+  @Override
+  protected void processStyleableFields(Style style, TypedArrayWrapper a) {
+    Resources res = getView().getContext().getResources();
+    Style subStyle;
+    if (a.hasValue(R.styleable.MyView_titleStyle)) {
+      subStyle = a.getStyle(R.styleable.MyView_titleStyle);
+      subStyle.setDebugListener(style.getDebugListener());
+      title().apply(subStyle);
     }
-
-    @Override
-    protected void applyParent(Style style) {
-        new ViewProxyStyleApplier(getView()).apply(style);
+    if (a.hasValue(R.styleable.MyView_subtitleStyle)) {
+      subStyle = a.getStyle(R.styleable.MyView_subtitleStyle);
+      subStyle.setDebugListener(style.getDebugListener());
+      subtitle().apply(subStyle);
     }
-
-    @Override
-    protected int[] attributes() {
-        return R.styleable.MyView;
+    if (a.hasValue(R.styleable.MyView_dividerStyle)) {
+      subStyle = a.getStyle(R.styleable.MyView_dividerStyle);
+      subStyle.setDebugListener(style.getDebugListener());
+      divider().apply(subStyle);
     }
+  }
 
-    @Override
-    protected void processStyleableFields(Style style, TypedArrayWrapper a) {
-        Resources res = getView().getContext().getResources();
-        Style subStyle;
-        if (a.hasValue(R.styleable.MyView_titleStyle)) {
-            subStyle = a.getStyle(R.styleable.MyView_titleStyle);
-            subStyle.setDebugListener(style.getDebugListener());
-            title().apply(subStyle);
-        }
-        if (a.hasValue(R.styleable.MyView_subtitleStyle)) {
-            subStyle = a.getStyle(R.styleable.MyView_subtitleStyle);
-            subStyle.setDebugListener(style.getDebugListener());
-            subtitle().apply(subStyle);
-        }
-        if (a.hasValue(R.styleable.MyView_dividerStyle)) {
-            subStyle = a.getStyle(R.styleable.MyView_dividerStyle);
-            subStyle.setDebugListener(style.getDebugListener());
-            divider().apply(subStyle);
-        }
-    }
+  @Override
+  protected void processAttributes(Style style, TypedArrayWrapper a) {
+    Resources res = getView().getContext().getResources();
+  }
 
-    @Override
-    protected void processAttributes(Style style, TypedArrayWrapper a) {
-        Resources res = getView().getContext().getResources();
-    }
+  public StyleBuilder builder() {
+    return new StyleBuilder(this);
+  }
 
-    public StyleBuilder builder() {
-        return new StyleBuilder(this);
-    }
+  public TextViewProxyStyleApplier title() {
+    return new TextViewProxyStyleApplier(getProxy().title);
+  }
 
-    public TextViewProxyStyleApplier title() {
-        return new TextViewProxyStyleApplier(getProxy().title);
-    }
+  public TextViewProxyStyleApplier subtitle() {
+    return new TextViewProxyStyleApplier(getProxy().subtitle);
+  }
 
-    public TextViewProxyStyleApplier subtitle() {
-        return new TextViewProxyStyleApplier(getProxy().subtitle);
-    }
+  public ViewProxyStyleApplier divider() {
+    return new ViewProxyStyleApplier(getProxy().divider);
+  }
 
-    public ViewProxyStyleApplier divider() {
-        return new ViewProxyStyleApplier(getProxy().divider);
-    }
+  public void applyDefault() {
+  }
 
-    public void applyDefault() {
+  public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
+    public BaseStyleBuilder(A applier) {
+      super(applier);
     }
 
-    public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
-        public BaseStyleBuilder(A applier) {
-            super(applier);
-        }
-
-        public BaseStyleBuilder() {
-        }
+    public BaseStyleBuilder() {
+    }
 
-        public B titleStyle(@StyleRes int resId) {
-            getBuilder().putRes(R.styleable.MyView[R.styleable.MyView_titleStyle], resId);
-            return (B) this;
-        }
+    public B titleStyle(@StyleRes int resId) {
+      getBuilder().putRes(R.styleable.MyView[R.styleable.MyView_titleStyle], resId);
+      return (B) this;
+    }
 
-        public B titleStyle(Style style) {
-            getBuilder().put(R.styleable.MyView[R.styleable.MyView_titleStyle], style);
-            return (B) this;
-        }
+    public B titleStyle(Style style) {
+      getBuilder().put(R.styleable.MyView[R.styleable.MyView_titleStyle], style);
+      return (B) this;
+    }
 
-        public B titleStyle(StyleBuilderFunction<TextViewProxyStyleApplier.StyleBuilder> function) {
-            TextViewProxyStyleApplier.StyleBuilder subBuilder = new TextViewProxyStyleApplier.StyleBuilder();
-            function.invoke(subBuilder);
-            getBuilder().put(R.styleable.MyView[R.styleable.MyView_titleStyle], subBuilder.build());
-            return (B) this;
-        }
+    public B titleStyle(StyleBuilderFunction<TextViewProxyStyleApplier.StyleBuilder> function) {
+      TextViewProxyStyleApplier.StyleBuilder subBuilder = new TextViewProxyStyleApplier.StyleBuilder();
+      function.invoke(subBuilder);
+      getBuilder().put(R.styleable.MyView[R.styleable.MyView_titleStyle], subBuilder.build());
+      return (B) this;
+    }
 
-        public B subtitleStyle(@StyleRes int resId) {
-            getBuilder().putRes(R.styleable.MyView[R.styleable.MyView_subtitleStyle], resId);
-            return (B) this;
-        }
+    public B subtitleStyle(@StyleRes int resId) {
+      getBuilder().putRes(R.styleable.MyView[R.styleable.MyView_subtitleStyle], resId);
+      return (B) this;
+    }
 
-        public B subtitleStyle(Style style) {
-            getBuilder().put(R.styleable.MyView[R.styleable.MyView_subtitleStyle], style);
-            return (B) this;
-        }
+    public B subtitleStyle(Style style) {
+      getBuilder().put(R.styleable.MyView[R.styleable.MyView_subtitleStyle], style);
+      return (B) this;
+    }
 
-        public B subtitleStyle(StyleBuilderFunction<TextViewProxyStyleApplier.StyleBuilder> function) {
-            TextViewProxyStyleApplier.StyleBuilder subBuilder = new TextViewProxyStyleApplier.StyleBuilder();
-            function.invoke(subBuilder);
-            getBuilder().put(R.styleable.MyView[R.styleable.MyView_subtitleStyle], subBuilder.build());
-            return (B) this;
-        }
+    public B subtitleStyle(StyleBuilderFunction<TextViewProxyStyleApplier.StyleBuilder> function) {
+      TextViewProxyStyleApplier.StyleBuilder subBuilder = new TextViewProxyStyleApplier.StyleBuilder();
+      function.invoke(subBuilder);
+      getBuilder().put(R.styleable.MyView[R.styleable.MyView_subtitleStyle], subBuilder.build());
+      return (B) this;
+    }
 
-        public B dividerStyle(@StyleRes int resId) {
-            getBuilder().putRes(R.styleable.MyView[R.styleable.MyView_dividerStyle], resId);
-            return (B) this;
-        }
+    public B dividerStyle(@StyleRes int resId) {
+      getBuilder().putRes(R.styleable.MyView[R.styleable.MyView_dividerStyle], resId);
+      return (B) this;
+    }
 
-        public B dividerStyle(Style style) {
-            getBuilder().put(R.styleable.MyView[R.styleable.MyView_dividerStyle], style);
-            return (B) this;
-        }
+    public B dividerStyle(Style style) {
+      getBuilder().put(R.styleable.MyView[R.styleable.MyView_dividerStyle], style);
+      return (B) this;
+    }
 
-        public B dividerStyle(StyleBuilderFunction<ViewProxyStyleApplier.StyleBuilder> function) {
-            ViewProxyStyleApplier.StyleBuilder subBuilder = new ViewProxyStyleApplier.StyleBuilder();
-            function.invoke(subBuilder);
-            getBuilder().put(R.styleable.MyView[R.styleable.MyView_dividerStyle], subBuilder.build());
-            return (B) this;
-        }
+    public B dividerStyle(StyleBuilderFunction<ViewProxyStyleApplier.StyleBuilder> function) {
+      ViewProxyStyleApplier.StyleBuilder subBuilder = new ViewProxyStyleApplier.StyleBuilder();
+      function.invoke(subBuilder);
+      getBuilder().put(R.styleable.MyView[R.styleable.MyView_dividerStyle], subBuilder.build());
+      return (B) this;
+    }
 
-        public B applyTo(MyView view) {
-            new MyViewStyleApplier(view).apply(build());
-            return (B) this;
-        }
+    public B applyTo(MyView view) {
+      new MyViewStyleApplier(view).apply(build());
+      return (B) this;
     }
+  }
 
-    public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
-        public StyleBuilder(MyViewStyleApplier applier) {
-            super(applier);
-        }
+  @UiThread
+  public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
+    public StyleBuilder(MyViewStyleApplier applier) {
+      super(applier);
+    }
 
-        public StyleBuilder() {
-        }
+    public StyleBuilder() {
+    }
 
-        public StyleBuilder addDefault() {
-            return this;
-        }
+    public StyleBuilder addDefault() {
+      return this;
     }
+  }
 }
\ No newline at end of file
diff --git a/paris-test/src/test/resources/styles/MyViewStyleApplier.java b/paris-test/src/test/resources/styles/MyViewStyleApplier.java
index 61452ef3..6c9604be 100644
--- a/paris-test/src/test/resources/styles/MyViewStyleApplier.java
+++ b/paris-test/src/test/resources/styles/MyViewStyleApplier.java
@@ -1,85 +1,88 @@
 package com.airbnb.paris.test;
 
+import android.support.annotation.UiThread;
 import com.airbnb.paris.Style;
 import com.airbnb.paris.StyleApplier;
 import com.airbnb.paris.proxies.ViewProxyStyleApplier;
 import java.lang.Override;
 
+@UiThread
 public final class MyViewStyleApplier extends StyleApplier<MyView, MyView> {
-    public MyViewStyleApplier(MyView view) {
-        super(view);
+  public MyViewStyleApplier(MyView view) {
+    super(view);
+  }
+
+  @Override
+  protected void applyParent(Style style) {
+    new ViewProxyStyleApplier(getView()).apply(style);
+  }
+
+  public StyleBuilder builder() {
+    return new StyleBuilder(this);
+  }
+
+  public void applyRedStyle() {
+    apply(MyView.RED_STYLE);
+  }
+
+  public void applyGreenStyle() {
+    apply(MyView.greenStyle);
+  }
+
+  public void applyBlue() {
+    StyleBuilder builder = new StyleBuilder();
+    MyView.blue(builder);
+    apply(builder.build());
+  }
+
+  public void applyDefault() {
+    apply(MyView.RED_STYLE);
+  }
+
+  public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
+    public BaseStyleBuilder(A applier) {
+      super(applier);
     }
 
-    @Override
-    protected void applyParent(Style style) {
-        new ViewProxyStyleApplier(getView()).apply(style);
+    public BaseStyleBuilder() {
     }
 
-    public StyleBuilder builder() {
-        return new StyleBuilder(this);
+    public B applyTo(MyView view) {
+      new MyViewStyleApplier(view).apply(build());
+      return (B) this;
     }
+  }
 
-    public void applyRedStyle() {
-        apply(MyView.RED_STYLE);
+  @UiThread
+  public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
+    public StyleBuilder(MyViewStyleApplier applier) {
+      super(applier);
     }
 
-    public void applyGreenStyle() {
-        apply(MyView.greenStyle);
+    public StyleBuilder() {
     }
 
-    public void applyBlue() {
-        StyleBuilder builder = new StyleBuilder();
-        MyView.blue(builder);
-        apply(builder.build());
+    public StyleBuilder addRedStyle() {
+      add(MyView.RED_STYLE);
+      return this;
     }
 
-    public void applyDefault() {
-        apply(MyView.RED_STYLE);
+    public StyleBuilder addGreenStyle() {
+      add(MyView.greenStyle);
+      return this;
     }
 
-    public abstract static class BaseStyleBuilder<B extends BaseStyleBuilder<B, A>, A extends StyleApplier<?, ?>> extends ViewProxyStyleApplier.BaseStyleBuilder<B, A> {
-        public BaseStyleBuilder(A applier) {
-            super(applier);
-        }
-
-        public BaseStyleBuilder() {
-        }
-
-        public B applyTo(MyView view) {
-            new MyViewStyleApplier(view).apply(build());
-            return (B) this;
-        }
+    public StyleBuilder addBlue() {
+      consumeProgrammaticStyleBuilder();
+      debugName("Blue");
+      MyView.blue(this);
+      consumeProgrammaticStyleBuilder();
+      return this;
     }
 
-    public static final class StyleBuilder extends BaseStyleBuilder<StyleBuilder, MyViewStyleApplier> {
-        public StyleBuilder(MyViewStyleApplier applier) {
-            super(applier);
-        }
-
-        public StyleBuilder() {
-        }
-
-        public StyleBuilder addRedStyle() {
-            add(MyView.RED_STYLE);
-            return this;
-        }
-
-        public StyleBuilder addGreenStyle() {
-            add(MyView.greenStyle);
-            return this;
-        }
-
-        public StyleBuilder addBlue() {
-            consumeProgrammaticStyleBuilder();
-            debugName("Blue");
-            MyView.blue(this);
-            consumeProgrammaticStyleBuilder();
-            return this;
-        }
-
-        public StyleBuilder addDefault() {
-            add(MyView.RED_STYLE);
-            return this;
-        }
+    public StyleBuilder addDefault() {
+      add(MyView.RED_STYLE);
+      return this;
     }
+  }
 }
\ No newline at end of file
diff --git a/update_processor_tests.rb b/update_processor_tests.rb
new file mode 100644
index 00000000..27d4b3f8
--- /dev/null
+++ b/update_processor_tests.rb
@@ -0,0 +1,61 @@
+# A script to update processor test files in the "src/test/resources" package with the latest test output.
+# This is useful when changes are made to the annotation processor and all the tests need to have their expected values updated.
+#
+# You may have to run this multiple times for the tests that output several generated source files.
+# In those cases the test report only details the first failure, so you will have to run `./gradlew test`
+# again to generate a new test report before running this script again.
+
+require 'rubygems'
+require 'nokogiri'
+
+def updateTestClass(test_class_result)
+  page = Nokogiri::HTML(open(test_class_result))
+
+  # Failing processor tests have their output in a <pre></pre> block
+  page.css('pre').each do |preBlock|
+    # Just a sanity check to make sure the pre block we're looking at is a processor source output
+    if preBlock.include? "Source declared the same top-level types of an expected source"
+      puts "Pre block did not contain source. (#{test_class_result}"
+      next
+    end
+
+    # We expect to see a line like:
+    # Expected file: </Users/eli_hart/repos/epoxy/epoxy-processortest/build/intermediates/classes/test/debug/ModelWithViewClickListener_.java>;
+    # Which tells us where the original processor test file lives
+    expected_file_match = /Expected file: <([^>]*)>/m.match(preBlock)
+    if expected_file_match.nil? || expected_file_match.captures.empty?
+      puts "Could not find expected file name in pre block (#{test_class_result})"
+      next
+    end
+
+    # The test copies the source file to the build folder. We need to modify the original file to update its expected source
+    expected_source_file_path = expected_file_match.captures[0].sub "build/intermediates/classes/test/debug", "src/test/resources"
+
+    # The error message includes the source code that was generated. We use a regex to extract the source from the following expected pattern
+    #
+    # Actual Source:
+    # =================
+    # ... Source code here
+    #     at com.google.testing.compile.JavaSourcesSubject$CompilationClause.failWithCandidate(JavaSourcesSubject.java:224)
+    # at com.google.testing.compile.JavaSourcesSubject$CompilationClause.parsesAs(JavaSourcesSubject.java:186)
+    # at com.google.testing.compile.JavaSourcesSubject.parsesAs(JavaSourcesSubject.java:95)
+    actual_source_match = /Actual Source:[\s]*=*[\s]*(package.*?})[\s]*at com\.google/m.match(preBlock)
+    if actual_source_match.nil? || actual_source_match.captures.empty?
+      puts "Could not find actual source in pre block (#{test_class_result})"
+      next
+    end
+
+    puts "Updating class: #{expected_source_file_path.split('/')[-1]}"
+
+    # Finally we simply overwrite the original expected test source with the actual test output in order to update it
+    actual_source = actual_source_match.captures[0]
+    File.open(expected_source_file_path, "w") do |f|
+      f.write actual_source
+    end
+  end
+end
+
+# Looks through each module's build folder for debug test results
+Dir.glob("*/build/reports/tests/testDebugUnitTest/classes/*.html") do |test_class_result|
+  updateTestClass(test_class_result)
+end