java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.whiteboard/com.example.whiteboard.SignedIn}: java.lang.NullPointerException

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via howtobuildsoftware.com by Unknown author, 1 year ago
Unable to instantiate activity ComponentInfo{com.example.whiteboard/com.example.whiteboard.SignedIn}: java.lang.NullPointerException
via Stack Overflow by SketchyTurtle
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Unable to start activity ComponentInfo{com.example.whiteboard/com.example.whiteboard.SignedIn}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
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, 2 years ago
Unable to instantiate activity ComponentInfo{com.example.testqstn/com.questionpoint.pdf.AccessPdf}: java.lang.NullPointerException
via Stack Overflow by Unknown author, 2 years ago
Unable to instantiate activity ComponentInfo{com.example.vivegrancanaria2014_001/com.example.vivegrancanaria2014_001.ofertas_list}: java.lang.NullPointerException
via Stack Overflow by user3565308
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Unable to instantiate activity ComponentInfo{com.example.davidson/com.example.davidson.MainMenu}: java.lang.NullPointerException
via Stack Overflow by user3662124
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Unable to instantiate activity ComponentInfo{com.example.test/com.example.test.BookDetail}: java.lang.NullPointerException
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.whiteboard/com.example.whiteboard.SignedIn}: java.lang.NullPointerException
at android.app.Activity.findViewById(Activity.java:1884)
at com.example.whiteboard.SignedIn.(SignedIn.java:25)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1208)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)

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