java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.auth.FirebaseUser.getUid()' on a null object reference

tip
Do you find the tips below useful? Click on the to mark them and say thanks to Rafael Fischer Viola . Or join the community to write better ones.
  1. 0

    Firebase Authentication UI is too late [Android]

    Stack Overflow | 2 weeks ago | ─Żubomír Skirka
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.auth.FirebaseUser.getUid()' on a null object reference
  2. 0
    samebug tip
    Firebase Database considers public fields and JavaBean-like getters and setters when serializing/deserializing JSON. A public field with a getter and a setter may cause this exception. Try to change to private or removing getter and setter.
  3. 0

    Error while using Intent Extras

    Stack Overflow | 1 month ago | Sriram R
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
  4. Speed up your debug routine!

    Automated exception search integrated into your IDE

  5. 0

    Firebase aute null object reference in android

    Stack Overflow | 2 months ago | Daniel Levi
    java.lang.NullPointerException: Attempt to invoke interface method 'void com.google.firebase.auth.FirebaseAuth$AuthStateListener.onAuthStateChanged(com.google.firebase.auth.FirebaseAuth)' on a null object reference
  6. 0

    Application not sending the Data to FirebaseDatabase

    Stack Overflow | 1 month ago | hitesh
    java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.firebase.auth.FirebaseUser com.google.firebase.auth.FirebaseAuth.getCurrentUser()' 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 virtual method 'java.lang.String com.google.firebase.auth.FirebaseUser.getUid()' on a null object reference

      at com.example.learnwords.Navigation.checkUser()
    2. com.example.learnwords
      Navigation$1.onAuthStateChanged
      1. com.example.learnwords.Navigation.checkUser(Navigation.java:247)
      2. com.example.learnwords.Navigation$1.onAuthStateChanged(Navigation.java:87)
      2 frames
    3. com.google.firebase
      FirebaseAuth$1.run
      1. com.google.firebase.auth.FirebaseAuth$1.run(Unknown Source)
      1 frame
    4. Android Platform
      ActivityThread.main
      1. android.os.Handler.handleCallback(Handler.java:746)
      2. android.os.Handler.dispatchMessage(Handler.java:95)
      3. android.os.Looper.loop(Looper.java:148)
      4. android.app.ActivityThread.main(ActivityThread.java:5443)
      4 frames
    5. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      1 frame
    6. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
      2 frames