Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Stack Overflow by James Robert Singleton
, 1 year ago
Attempt to invoke interface method 'java.lang.String android.content.SharedPreferences.getString(java.lang.String, java.lang.String)' on a null object reference
java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String android.content.SharedPreferences.getString(java.lang.String, java.lang.String)' on a null object reference at com.example.jamessingleton.chffrapi.AuthPreferences.getToken(AuthPreferences.java:43) at com.example.jamessingleton.chffrapi.APIRequests.run(APIRequests.java:34) at com.example.jamessingleton.chffrapi.MainActivity$1.onClick(MainActivity.java:90) at com.google.android.gms.common.SignInButton.onClick(Unknown Source) at android.view.View.performClick(View.java:5697) at android.widget.TextView.performClick(TextView.java:10814) at android.view.View$PerformClick.run(View.java:22526) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:158) at android.app.ActivityThread.main(ActivityThread.java:7224) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)