java.lang.NullPointerException

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  • Application initial Activity
    via Stack Overflow by Иван Коданев
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    • 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)
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