java.lang.IllegalStateException: Could not execute method for android:onClick

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    Application crash while using spinner

    Stack Overflow | 5 months ago | Gautam Kumtakar
    java.lang.IllegalStateException: Could not execute method for android:onClick

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at biz.avksons.siddharth.hydro_basic_calc.UoE.onUoECalc_ButtonClick()
    2. biz.avksons.siddharth
      UoE.onUoECalc_ButtonClick
      1. biz.avksons.siddharth.hydro_basic_calc.UoE.onUoECalc_ButtonClick(UoE.java:84)
      1 frame
    3. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invokeNative(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:525)
      2 frames
    4. Android v7
      AppCompatViewInflater$DeclaredOnClickListener.onClick
      1. android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
      1 frame
    5. Android Platform
      ActivityThread.main
      1. android.view.View.performClick(View.java:4240)
      2. android.view.View$PerformClick.run(View.java:17721)
      3. android.os.Handler.handleCallback(Handler.java:730)
      4. android.os.Handler.dispatchMessage(Handler.java:92)
      5. android.os.Looper.loop(Looper.java:137)
      6. android.app.ActivityThread.main(ActivityThread.java:5103)
      6 frames
    6. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invokeNative(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:525)
      2 frames
    7. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
      2 frames
    8. Android Platform
      NativeStart.main
      1. dalvik.system.NativeStart.main(Native Method)
      1 frame