java.lang.IllegalStateException: Could not find method op(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatButton with id 'button'

Stack Overflow | Zer Ammar | 1 month ago
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Root Cause Analysis

  1. java.lang.IllegalStateException

    Could not find method op(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatButton with id 'button'

    at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod()
  2. Android v7
    AppCompatViewInflater$DeclaredOnClickListener.onClick
    1. android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:327)
    2. android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:284)
    2 frames
  3. Android Platform
    ActivityThread.main
    1. android.view.View.performClick(View.java:4438)
    2. android.view.View$PerformClick.run(View.java:18422)
    3. android.os.Handler.handleCallback(Handler.java:733)
    4. android.os.Handler.dispatchMessage(Handler.java:95)
    5. android.os.Looper.loop(Looper.java:136)
    6. android.app.ActivityThread.main(ActivityThread.java:5001)
    6 frames
  4. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invokeNative(Native Method)
    2. java.lang.reflect.Method.invoke(Method.java:515)
    2 frames
  5. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    2 frames
  6. Android Platform
    NativeStart.main
    1. dalvik.system.NativeStart.main(Native Method)
    1 frame