Requires AppCompat Theme

[josmithua]

This library needs your app to use an AppCompat theme.

03-27 11:01:53.902 25851 25851 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mycompany.atwebviewtest/saschpe.android.customtabs.WebViewActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.ActivityThread.-wrap11(Unknown Source:0)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:106)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:164)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.ActivityThread.main(ActivityThread.java:6494)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at java.lang.reflect.Method.invoke(Native Method)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.support.v7.app.AppCompatDelegateImplV9.createSubDecor(AppCompatDelegateImplV9.java:354)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:323)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at saschpe.android.customtabs.WebViewActivity.onCreate(SourceFile:43)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.Activity.performCreate(Activity.java:7000)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.Activity.performCreate(Activity.java:6991)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
03-27 11:01:53.902 25851 25851 E AndroidRuntime: 	... 9 more

This can be fixed by changing your theme to <application android:theme="@style/Theme.AppCompat[.*]">, but it is not ideal.

Cheers!
Joshua