java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference

  1. 0

    NullPointerException while using dagger-2 to inject preferences in fragment

    Stack Overflow | 3 days ago | Manvendra Sah
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
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    Won't work when user will change security code/schema...

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    java.lang.RuntimeException: Unable to start activity ComponentInfo{in.co.ophio.secure.sample/in.co.ophio.secure.sample.view.MainActivity}: java.lang.IllegalStateException: java.security.InvalidKeyException: javax.crypto.BadPaddingException: error:0407106B:rsa routines:RSA_padding_check_PKCS1_type_2:block type is not 02
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    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference

    GitHub | 1 year ago | galadril
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
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  5. 0

    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference

    GitHub | 10 months ago | galadril
    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
  6. 0

    java.lang.RuntimeException: Unable to start activity ComponentInfo{nl.hnogames.domoticz.premium/nl.hnogames.domoticz.ServerSettingsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference

    GitHub | 11 months ago | galadril
    java.lang.RuntimeException: Unable to start activity ComponentInfo{nl.hnogames.domoticz.premium/nl.hnogames.domoticz.ServerSettingsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference

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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference

    at android.content.ContextWrapper.getPackageName()
  2. Android Platform
    PreferenceManager.getDefaultSharedPreferences
    1. android.content.ContextWrapper.getPackageName(ContextWrapper.java:133)
    2. android.preference.PreferenceManager.getDefaultSharedPreferencesName(PreferenceManager.java:390)
    3. android.preference.PreferenceManager.getDefaultSharedPreferences(PreferenceManager.java:385)
    3 frames
  3. dagger.module
    AppModule_ProvidesSharedPreferenceFactory.get
    1. dagger.module.AppModule.providesSharedPreference(AppModule.java:34)
    2. dagger.module.AppModule_ProvidesSharedPreferenceFactory.get(AppModule_ProvidesSharedPreferenceFactory.java:23)
    3. dagger.module.AppModule_ProvidesSharedPreferenceFactory.get(AppModule_ProvidesSharedPreferenceFactory.java:8)
    3 frames
  4. Dagger
    ScopedProvider.get
    1. dagger.internal.ScopedProvider.get(ScopedProvider.java:47)
    1 frame
  5. ui
    DisplayFragment_MembersInjector.injectMembers
    1. ui.DisplayFragment_MembersInjector.injectMembers(DisplayFragment_MembersInjector.java:29)
    2. ui.DisplayFragment_MembersInjector.injectMembers(DisplayFragment_MembersInjector.java:8)
    2 frames
  6. dagger.component
    DaggerAppComponent.inject
    1. dagger.component.DaggerAppComponent.inject(DaggerAppComponent.java:45)
    1 frame
  7. ui
    MainActivity$MyPagerAdapter.getItem
    1. ui.DisplayFragment.<init>(DisplayFragment.java:37)
    2. ui.DisplayFragment.newInstance(DisplayFragment.java:41)
    3. ui.MainActivity$MyPagerAdapter.getItem(MainActivity.java:86)
    3 frames
  8. Android Support v4
    ViewPager.onMeasure
    1. android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:101)
    2. android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1034)
    3. android.support.v4.view.ViewPager.populate(ViewPager.java:1182)
    4. android.support.v4.view.ViewPager.populate(ViewPager.java:1116)
    5. android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1642)
    5 frames
  9. Android Platform
    FrameLayout.onMeasure
    1. android.view.View.measure(View.java:19324)
    2. android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:825)
    3. android.widget.RelativeLayout.onMeasure(RelativeLayout.java:511)
    4. android.view.View.measure(View.java:19324)
    5. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6113)
    6. android.widget.FrameLayout.onMeasure(FrameLayout.java:223)
    6 frames
  10. Android v7
    ContentFrameLayout.onMeasure
    1. android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
    1 frame
  11. Android Platform
    ViewGroup.measureChildWithMargins
    1. android.view.View.measure(View.java:19324)
    2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6113)
    2 frames
  12. Android v7
    ActionBarOverlayLayout.onMeasure
    1. android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:393)
    1 frame
  13. Android Platform
    FrameLayout.onMeasure
    1. android.view.View.measure(View.java:19324)
    2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6113)
    3. android.widget.FrameLayout.onMeasure(FrameLayout.java:223)
    4. android.view.View.measure(View.java:19324)
    5. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6113)
    6. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1723)
    7. android.widget.LinearLayout.measureVertical(LinearLayout.java:788)
    8. android.widget.LinearLayout.onMeasure(LinearLayout.java:648)
    9. android.view.View.measure(View.java:19324)
    10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6113)
    11. android.widget.FrameLayout.onMeasure(FrameLayout.java:223)
    11 frames
  14. Android
    PhoneWindow$DecorView.onMeasure
    1. com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2694)
    1 frame
  15. Android Platform
    ActivityThread.main
    1. android.view.View.measure(View.java:19324)
    2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2545)
    3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1454)
    4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1709)
    5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1335)
    6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6816)
    7. android.view.Choreographer$CallbackRecord.run(Choreographer.java:894)
    8. android.view.Choreographer.doCallbacks(Choreographer.java:696)
    9. android.view.Choreographer.doFrame(Choreographer.java:631)
    10. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:880)
    11. android.os.Handler.handleCallback(Handler.java:815)
    12. android.os.Handler.dispatchMessage(Handler.java:104)
    13. android.os.Looper.loop(Looper.java:207)
    14. android.app.ActivityThread.main(ActivityThread.java:5896)
    14 frames