java.lang.NullPointerException: Attempt to invoke interface method 'int android.app.FragmentManager$BackStackEntry.getId()' on a null object reference

tip
Do you find the tips below useful? Click on the to mark them and say thanks to rafael . Or join the community to write better ones.
  1. 0
    samebug tip
    When you use findViewById inside an activity it is going to look for a View inside your main_activity.xml. If it's not there, it throws this exception, try to use the right view to call findviewById.
  2. 0

    NullPointerException: Attempt to invoke interface method on a null object reference

    Stack Overflow | 2 months ago | ThatProgrammerAndroid222222222
    java.lang.NullPointerException: Attempt to invoke interface method 'int android.app.FragmentManager$BackStackEntry.getId()' on a null object reference
  3. 0

    changing the color of a fragment on a button click

    Stack Overflow | 3 months ago | phoenixshiv
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setBackgroundColor(int)' on a null object reference
  4. Speed up your debug routine!

    Automated exception search integrated into your IDE

  5. 0

    Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference[dup]

    Stack Overflow | 1 month ago | Antony
    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
  6. 0

    TabHost - Bet6e.com Android studio Fragment

    bet6e.com | 2 years ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.support.v4.app.FragmentTransaction android.support.v4.app.FragmentManager.beginTransaction()' on a null object reference

    Not finding the right solution?
    Take a tour to get the most out of Samebug.

    Tired of useless tips?

    Automated exception search integrated into your IDE

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke interface method 'int android.app.FragmentManager$BackStackEntry.getId()' on a null object reference

      at co5025.example.com.week10.MainActivity.onClick()
    2. co5025.example.com
      MainActivity.onClick
      1. co5025.example.com.week10.MainActivity.onClick(MainActivity.java:52)
      1 frame
    3. Android Platform
      ActivityThread.main
      1. android.view.View.performClick(View.java:5610)
      2. android.view.View$PerformClick.run(View.java:22260)
      3. android.os.Handler.handleCallback(Handler.java:751)
      4. android.os.Handler.dispatchMessage(Handler.java:95)
      5. android.os.Looper.loop(Looper.java:154)
      6. android.app.ActivityThread.main(ActivityThread.java:6077)
      6 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      1 frame
    5. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
      2 frames