java.lang.NullPointerException: Attempt to invoke virtual method 'android.app.FragmentTransaction android.app.FragmentManager.beginTransaction()' on a null object reference

Stack Overflow | Nitish | 7 months ago
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  1. 0

    Android: Fragment manager becomes null

    Stack Overflow | 7 months ago | Nitish
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.app.FragmentTransaction android.app.FragmentManager.beginTransaction()' on a null object reference
  2. 0

    DialogFragment.show() throws NullPointerException

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

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'android.app.FragmentTransaction android.app.FragmentManager.beginTransaction()' on a null object reference

      at android.app.DialogFragment.show()
    2. Android Platform
      DialogFragment.show
      1. android.app.DialogFragment.show(DialogFragment.java:228)
      1 frame
    3. in.droom.fragments
      HomeScreenFragment.onResponse
      1. in.droom.fragments.HomeScreenFragment.updateUI(HomeScreenFragment.java:553)
      2. in.droom.fragments.HomeScreenFragment.onResponse(HomeScreenFragment.java:626)
      3. in.droom.fragments.HomeScreenFragment.onResponse(HomeScreenFragment.java:100)
      3 frames
    4. in.droom.util
      DroomApi$1.onPostExecute
      1. in.droom.util.DroomApi$1.onPostExecute(DroomApi.java:1136)
      2. in.droom.util.DroomApi$1.onPostExecute(DroomApi.java:1094)
      2 frames
    5. Android Platform
      ActivityThread.main
      1. android.os.AsyncTask.finish(AsyncTask.java:636)
      2. android.os.AsyncTask.access$500(AsyncTask.java:177)
      3. android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:653)
      4. android.os.Handler.dispatchMessage(Handler.java:111)
      5. android.os.Looper.loop(Looper.java:194)
      6. android.app.ActivityThread.main(ActivityThread.java:5637)
      6 frames
    6. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Method.java)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames
    7. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:959)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)
      2 frames