java.lang.NullPointerException: Attempt to invoke virtual method 'int android.widget.RadioGroup.getCheckedRadioButtonId()' on a null object reference

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 Иван Коданев
, 1 year ago
Attempt to invoke virtual method 'int android.widget.RadioGroup.getCheckedRadioButtonId()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.widget.RadioGroup.getCheckedRadioButtonId()' on a null object reference
at ru.j_soft.contact.MainActivity.onSaveInstanceState(MainActivity.java:392)
at android.app.Activity.performSaveInstanceState(Activity.java:1298)
at android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:1289)
at android.app.ActivityThread.callCallActivityOnSaveInstanceState(ActivityThread.java:4088)
at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3490)
at android.app.ActivityThread.handleStopActivity(ActivityThread.java:3550)

Users with the same issue

You are the first who have seen this exception. Write a tip to help other users and build your expert profile.

Know the solutions? Share your knowledge to help other developers to debug faster.