java.lang.NullPointerException

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  • Error with progress dialog
    via Stack Overflow by Asmi
    ,
    • java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference at com.android.internal.app.AlertController.setupView(AlertController.java:472) at com.android.internal.app.AlertController.installContent(AlertController.java:237) at android.app.AlertDialog.onCreate(AlertDialog.java:423) at android.app.Dialog.dispatchOnCreate(Dialog.java:389) at android.app.Dialog.show(Dialog.java:293) at android.preference.DialogPreference.showDialog(DialogPreference.java:319) at android.preference.DialogPreference.onClick(DialogPreference.java:277) at android.preference.Preference.performClick(Preference.java:994) at android.preference.PreferenceScreen.onItemClick(PreferenceScreen.java:214) at android.widget.AdapterView.performItemClick(AdapterView.java:310) at android.widget.AbsListView.performItemClick(AbsListView.java:1155) at android.widget.AbsListView$PerformClick.run(AbsListView.java:3126) at android.widget.AbsListView$3.run(AbsListView.java:4041) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
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