java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rada.radastaff/com.rada.radastaff.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ToggleButton.setChecked(boolean)' on a null object reference

Stack Overflow | TruongHieu | 8 months ago
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  1. 0

    Can't handle Toggle Button on Actionbar

    Stack Overflow | 8 months ago | TruongHieu
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rada.radastaff/com.rada.radastaff.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ToggleButton.setChecked(boolean)' on a null object reference
  2. 0

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    GitHub | 2 years ago | idemax
    java.lang.NullPointerException: null receiver
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    java.lang.NullPointerException: Attempt to invoke virtual method 'double android.location.Location.getLatitude()' on a null object reference at greetrack.estg.ipvc.greentrack.Adicionar.locInicio(Adicionar.java:53)
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    Android MediaRecorder NullPointerException

    Stack Overflow | 2 years ago | BRYCE VAN STRAATEN
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    Trying to start a service on android and get a null object

    Stack Overflow | 2 years ago | user1114720
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference 03-23 16:20:22.902 1928-1928/nl.digicre8.raspidom W/System.err﹕ at android.content.ContextWrapper.getPackageName(ContextWrapper.java:131) 03-23 16:20:22.902 1928-1928/nl.digicre8.raspidom W/System.err﹕ at android.content.ComponentName.<init>(ComponentName.java:77) 03-23 16:20:22.902 1928-1928/nl.digicre8.raspidom W/System.err﹕ at android.content.Intent.<init>(Intent.java:3996) 03-23 16:20:22.902 1928-1928/nl.digicre8.raspidom W/System.err﹕ at nl.digicre8.raspidom.RasPiDomAPI.CallAction(RasPiDomAPI.java:149) 03-23 16:20:22.905 1928-1928/nl.digicre8.raspidom W/System.err﹕ at nl.digicre8.raspidom.MainActivity.LocationService(MainActivity.java:208)

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void android.widget.ToggleButton.setChecked(boolean)' on a null object reference

      at com.rada.radastaff.MainActivity.onCreate()
    2. com.rada.radastaff
      MainActivity.onCreate
      1. com.rada.radastaff.MainActivity.onCreate(MainActivity.java:20)
      1 frame
    3. Android Platform
      ActivityThread.main
      1. android.app.Activity.performCreate(Activity.java:5975)
      2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
      3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
      4. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2376)
      5. android.app.ActivityThread.access$800(ActivityThread.java:147)
      6. android.app.ActivityThread$H.handleMessage(ActivityThread.java:1281)
      7. android.os.Handler.dispatchMessage(Handler.java:102)
      8. android.os.Looper.loop(Looper.java:135)
      9. android.app.ActivityThread.main(ActivityThread.java:5253)
      9 frames
    4. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:372)
      2 frames