feat: add change selected area bg color

pickerview/src/main/java/com/bigkoo/pickerview/builder/OptionsPickerBuilder.java

@@ -67,6 +67,11 @@ public OptionsPickerBuilder setCancelColor(int textColorCancel) {
         return this;
     }
 
+    public OptionsPickerBuilder setSelectAreaColor(int selectAreaColor){
+        mPickerOptions.selectAreaColor = selectAreaColor;
+        return this;
+    }
+
 
     /**
      * {@link #setOutSideColor} instead.

pickerview/src/main/java/com/bigkoo/pickerview/configure/PickerOptions.java

@@ -101,6 +101,7 @@ public PickerOptions(int buildType) {
     public int textColorCenter = 0xFF2a2a2a; //分割线之间的文字颜色
     public int dividerColor = 0xFFd5d5d5; //分割线的颜色
     public int outSideColor = -1; //显示时的外部背景色颜色,默认是灰色
+    public int selectAreaColor = 0xFFFFFFFF;//选中区域的背景色，默认是白色
 
     public float lineSpacingMultiplier = 1.6f; // 条目间距倍数 默认1.6
     public boolean isDialog;//是否是对话框模式

pickerview/src/main/java/com/bigkoo/pickerview/view/OptionsPickerView.java

@@ -97,6 +97,7 @@ private void initView(Context context) {
         wheelOptions.setTextColorOut(mPickerOptions.textColorOut);
         wheelOptions.setTextColorCenter(mPickerOptions.textColorCenter);
         wheelOptions.isCenterLabel(mPickerOptions.isCenterLabel);
+        wheelOptions.setSelectAreaColor(mPickerOptions.selectAreaColor);
     }
 
     /**

pickerview/src/main/java/com/bigkoo/pickerview/view/WheelOptions.java

@@ -358,6 +358,16 @@ public void setDividerColor(int dividerColor) {
         wv_option3.setDividerColor(dividerColor);
     }
 
+    /**
+     * 设置选择区域背景颜色
+     * @param selectAreaColor
+     */
+    public void setSelectAreaColor(int selectAreaColor){
+        wv_option1.setSelectAreaColor(selectAreaColor);
+        wv_option2.setSelectAreaColor(selectAreaColor);
+        wv_option3.setSelectAreaColor(selectAreaColor);
+    }
+
     /**
      * 设置分割线的类型
      *

wheelview/src/main/java/com/contrarywind/view/WheelView.java

@@ -61,6 +61,7 @@ public enum DividerType { // 分隔线类型
     private Paint paintOuterText;
     private Paint paintCenterText;
     private Paint paintIndicator;
+    private Paint paintSelectArea;
 
     private WheelAdapter adapter;
 
@@ -77,6 +78,7 @@ public enum DividerType { // 分隔线类型
     private int textColorCenter;
     private int dividerColor;
     private int dividerWidth;
+    private int selectAreaColor;
 
     // 条目间距倍数
     private float lineSpacingMultiplier = 1.6F;
@@ -152,6 +154,7 @@ public WheelView(Context context, AttributeSet attrs) {
             textColorOut = a.getColor(R.styleable.pickerview_wheelview_textColorOut, 0xFFa8a8a8);
             textColorCenter = a.getColor(R.styleable.pickerview_wheelview_textColorCenter, 0xFF2a2a2a);
             dividerColor = a.getColor(R.styleable.pickerview_wheelview_dividerColor, 0xFFd5d5d5);
+            selectAreaColor = a.getColor(R.styleable.pickerview_wheelview_selectAreaColor, 0xFFFFFFFF);
             dividerWidth = a.getDimensionPixelSize(R.styleable.pickerview_wheelview_dividerWidth, 2);
             textSize = a.getDimensionPixelOffset(R.styleable.pickerview_wheelview_textSize, textSize);
             lineSpacingMultiplier = a.getFloat(R.styleable.pickerview_wheelview_lineSpacingMultiplier, lineSpacingMultiplier);
@@ -203,6 +206,10 @@ private void initPaints() {
         paintIndicator.setColor(dividerColor);
         paintIndicator.setAntiAlias(true);
 
+        paintSelectArea = new Paint();
+        paintSelectArea.setColor(selectAreaColor);
+        paintSelectArea.setAntiAlias(true);
+
         setLayerType(LAYER_TYPE_SOFTWARE, null);
     }
 
@@ -416,6 +423,7 @@ protected void onDraw(Canvas canvas) {
             endX = measuredWidth - startX;
             canvas.drawLine(startX, firstLineY, endX, firstLineY, paintIndicator);
             canvas.drawLine(startX, secondLineY, endX, secondLineY, paintIndicator);
+            canvas.drawRect(startX,firstLineY,endX,secondLineY, paintSelectArea);
         } else if (dividerType == DividerType.CIRCLE) {
             //分割线为圆圈形状
             paintIndicator.setStyle(Paint.Style.STROKE);
@@ -433,10 +441,16 @@ protected void onDraw(Canvas canvas) {
             endX = measuredWidth - startX;
             //半径始终以宽高中最大的来算
             float radius = Math.max((endX - startX), itemHeight) / 1.8f;
-            canvas.drawCircle(measuredWidth / 2f, measuredHeight / 2f, radius, paintIndicator);
+
+            Paint paint = new Paint();
+            paint.setColor(selectAreaColor);
+            paint.setStrokeWidth(radius);
+            canvas.drawCircle(measuredWidth / 2f, measuredHeight / 2f, radius, paint);
+			canvas.drawCircle(measuredWidth / 2f, measuredHeight / 2f, radius, paintIndicator);
         } else {
             canvas.drawLine(0.0F, firstLineY, measuredWidth, firstLineY, paintIndicator);
             canvas.drawLine(0.0F, secondLineY, measuredWidth, secondLineY, paintIndicator);
+            canvas.drawRect(0.0F,firstLineY,measuredWidth,secondLineY, paintSelectArea);
         }
 
         //只显示选中项Label文字的模式，并且Label文字不为空，则进行绘制
@@ -802,6 +816,11 @@ public void setDividerColor(int dividerColor) {
         paintIndicator.setColor(dividerColor);
     }
 
+    public void setSelectAreaColor(int selectAreaColor){
+        this.selectAreaColor = selectAreaColor;
+        paintSelectArea.setColor(selectAreaColor);
+    }
+
     public void setDividerType(DividerType dividerType) {
         this.dividerType = dividerType;
     }

wheelview/src/main/res/values/attrs.xml

@@ -10,6 +10,7 @@
         <attr name="wheelview_textColorOut" format="color"/>
         <attr name="wheelview_textColorCenter" format="color"/>
         <attr name="wheelview_dividerColor" format="color"/>
+        <attr name="wheelview_selectAreaColor" format="color"/>
         <attr name="wheelview_dividerWidth" format="dimension"/>
         <attr name="wheelview_lineSpacingMultiplier" format="float"/>
     </declare-styleable>