title: ClasscastException cannot be cast to linearlayout ot Button.widget.button
body: <pre><code> Process: com.example.e_classroom, PID: 12427
      java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.Button
          at com.example.e_classroom.test_questions$3.onAnimationEnd(test_questions.java:116)
          at android.view.ViewPropertyAnimator$AnimatorEventListener.onAnimationEnd(ViewPropertyAnimator.java:1136)
          at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1171)
          at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:722)
          at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:738)
          at android.view.Choreographer$CallbackRecord.run(Choreographer.java:800)
          at android.view.Choreographer.doCallbacks(Choreographer.java:603)
          at android.view.Choreographer.doFrame(Choreographer.java:571)
          at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:786)
          at android.os.Handler.handleCallback(Handler.java:815)
          at android.os.Handler.dispatchMessage(Handler.java:104)
          at android.os.Looper.loop(Looper.java:194)
          at android.app.ActivityThread.main(ActivityThread.java:5637)
          at java.lang.reflect.Method.invoke(Native Method)
          at java.lang.reflect.Method.invoke(Method.java:372)
          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
  </code></pre>
  
  <p>here found error can anyone help this how to solve this error</p>
  
  <pre><code>        public void onAnimationEnd(Animator animation) {
              if(value==0) {
                  try{
                      ((TextView)v).setText(data);
                      questindicator.setText(position+1+"/"+list.size());
                  }catch (ClassCastException ex){
            // here 116 line no
        ((Button)v).setText(data);
                  }
                  v.setTag(data);
                  playanimate(v, 1,data);
              }
          }
  </code></pre>