IssueTracker

This was tested in Android 4.4 but may also affect previous versions.

This problem happens when trying to apply a custom theme just to one of the fragments in a view and this fragment contains an action that has to be handled by the parent activity.

- Create a layout xml that contains an onclick tag in it for a fragment:

...
<Button
        android:id="@+id/confirmCoachMarksButton"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:onClick="confirmAction"/>
...

- When inflating the fragment in onCreateView we use a custom theme for it with a ContextThemeWrapper:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        ContextThemeWrapper context = new ContextThemeWrapper(context, R.style.AppTheme);
        LayoutInflater localInflater = inflater.cloneInContext(context);
        View result = localInflater.inflate(R.layout.fragment_main, container, false);
        return result;
}

- The handler method (confirmAction(View)) is present on the parent FragmentActivity but the following exception is thrown:

java.lang.IllegalStateException: Could not find a method confirmAction(View) in the activity class android.view.ContextThemeWrapper for onClick handler on view class android.widget.Button with id 'confirmAction'
            at android.view.View$1.onClick(View.java:3801)
            at android.view.View.performClick(View.java:4424)
            at android.view.View$PerformClick.run(View.java:18383)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4998)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NoSuchMethodException: confirmAction [class android.view.View]
            at java.lang.Class.getConstructorOrMethod(Class.java:472)
            at java.lang.Class.getMethod(Class.java:857)
            at android.view.View$1.onClick(View.java:3794)
            at android.view.View.performClick(View.java:4424)
            at android.view.View$PerformClick.run(View.java:18383)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4998)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
            at dalvik.system.NativeStart.main(Native Method)

It can be worked around by delegating with an OnClickListener but this is a bit messy :)