java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sbi.myapplication1/com.example.sbi.myapplication1.loginhome}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.widget.DrawerLayout.setDrawerShadow(int, int)' on a null object reference

Stack Overflow | Volverine | 4 months ago
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    getting fatal exception on drawer shadow

    Stack Overflow | 4 months ago | Volverine
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sbi.myapplication1/com.example.sbi.myapplication1.loginhome}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.widget.DrawerLayout.setDrawerShadow(int, int)' on a null object reference
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    Caused by java.lang.NullPointerException: Attempt to invoke virtual method 'void com.karumi.dexter.DexterInstance.onActivityReady(android.app.Activity)' on a null object reference

    GitHub | 4 months ago | cioraneanu
    java.lang.RuntimeException: Unable to start activity ComponentInfo{MYPACKAGE/com.karumi.dexter.DexterActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.karumi.dexter.DexterInstance.onActivityReady(android.app.Activity)' on a null object reference
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    openclassrooms.com | 2 years ago
    java.lang.RuntimeException: Unable to start activity ComponentInfo{info.androidhive.tabsswipe/info.androidhive.tabsswipe.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.support.v4.widget.DrawerLayout.setDrawerShadow(int, int)' on a null object reference

      at com.example.sbi.myapplication1.loginhome.onCreate()
    2. com.example.sbi
      loginhome.onCreate
      1. com.example.sbi.myapplication1.loginhome.onCreate(loginhome.java:49)
      1 frame
    3. Android Platform
      ActivityThread.main
      1. android.app.Activity.performCreate(Activity.java:6001)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2261)
      4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368)
      5. android.app.ActivityThread.access$800(ActivityThread.java:144)
      6. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1285)
      7. android.os.Handler.dispatchMessage(Handler.java:102)
      8. android.os.Looper.loop(Looper.java:135)
      9. android.app.ActivityThread.main(ActivityThread.java:5235)
      9 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)
      2 frames