java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference

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  1. 0

    android.support.v4.app.FragmentManager#popBackStackImmediate() results in a NullPointerException

    Stack Overflow | 1 year ago | Elhanan Mishraky
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  2. 0

    getHandler() NullPointerException when calling popBackstackImmediate() on a FragmentManager

    Stack Overflow | 9 months ago | Whiz
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference
  3. 0

    Issue 208911 - android - Attempt to invoke virtual method 'android.content.Context android.support.v4.app.FragmentHostCallback.getContext()' on a null object reference - Android Open Source Project - Issue Tracker - Google Project Hosting

    google.com | 3 months ago
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.support.v4.app.FragmentHostCallback.getContext()' on a null object reference
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    SDK 25.1.1 NPE: Attempt to invoke virtual method 'int android.view.View.getVisibility()' on a null object reference

    Stack Overflow | 4 weeks ago | Elye
    java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getVisibility()' on a null object reference

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'android.os.Handler android.support.v4.app.FragmentHostCallback.getHandler()' on a null object reference

      at android.support.v4.app.FragmentManagerImpl.execPendingActions()
    2. Android Support v4
      FragmentManagerImpl.popBackStackImmediate
      1. android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1588)
      2. android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570)
      3. android.support.v4.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:585)
      3 frames