java.lang.ClassCastException: android.support.v7.internal.widget.TintButton cannot be cast to android.support.v7.widget.GridLayout at com.education4all.mathcoach.TaskActivity.onCreate(TaskActivity.java:134)

Stack Overflow | UpmostScarab | 6 months ago
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Root Cause Analysis

  1. java.lang.ClassCastException

    android.support.v7.internal.widget.TintButton cannot be cast to android.support.v7.widget.GridLayout at com.education4all.mathcoach.TaskActivity.onCreate(TaskActivity.java:134)

    at android.app.Activity.performCreate()
  2. Android Platform
    ActivityThread.main
    1. android.app.Activity.performCreate(Activity.java:4465)
    2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
    3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2033)
    4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104)
    5. android.app.ActivityThread.access$600(ActivityThread.java:132)
    6. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1157)
    7. android.os.Handler.dispatchMessage(Handler.java:99)
    8. android.os.Looper.loop(Looper.java:137)
    9. android.app.ActivityThread.main(ActivityThread.java:4575)
    9 frames
  3. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invokeNative(Native Method)
    2. java.lang.reflect.Method.invoke(Method.java:511)
    2 frames
  4. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
    2 frames
  5. Android Platform
    NativeStart.main
    1. dalvik.system.NativeStart.main(Native Method)
    1 frame