java.lang.NullPointerException

JIRA | Dong Jun | 2 years ago
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  1. 0

    Reproduce Test Steps ==================== Enable lzma support: run gyp_xwalk --use_lzma=1 build XWalkCoreShell.apk. Expected Outcome ================ Not crash. Actual Outcome ============== Crashed. Test Case Source Code ===================== Test Builds =========== Issue Analysis ============== in org.xwalk.core.XWalkPreferences.setValue(XWalkPreferences.java:107) this rely on coreWrapper, which will be initialized after lzma decompressed. So the solution is place XWalkViewShellActivity.setContentView in onXWalkReady. call sequence: XWalkViewShellActivity.setContentView -> XWalkViewSectionFragment.onCreate -> XWalkViewSectionFragment.onCreateView -> XWalkViewShellActivity.onXWalkViewCreated -> XWalkPreferences.setValue (coreWrapper is null) crash stack: D/XWalkActivity( 1342): Reserve object: class org.xwalk.core.XWalkView D/XWalkActivity( 1342): Reserve object: class org.xwalk.core.xwview.shell.XWalkViewShellActivity$11 D/XWalkActivity( 1342): Reserve method: setResourceClient D/XWalkActivity( 1342): Reserve object: class org.xwalk.core.xwview.shell.XWalkViewShellActivity$12 D/XWalkActivity( 1342): Reserve method: setUIClient D/AndroidRuntime( 1342): Shutting down VM W/dalvikvm( 1342): threadid=1: thread exiting with uncaught exception (group=0xb1b0eba8) E/AndroidRuntime( 1342): FATAL EXCEPTION: main E/AndroidRuntime( 1342): Process: org.xwalk.core.xwview.shell, PID: 1342 E/AndroidRuntime( 1342): java.lang.NullPointerException E/AndroidRuntime( 1342): at org.xwalk.core.XWalkPreferences.setValue(XWalkPreferences.java:107) E/AndroidRuntime( 1342): at org.xwalk.core.xwview.shell.XWalkViewShellActivity.onXWalkViewCreated(XWalkViewShellActivity.java:367) E/AndroidRuntime( 1342): at org.xwalk.core.xwview.shell.XWalkViewSectionFragment.onCreateView(XWalkViewSectionFragment.java:42) E/AndroidRuntime( 1342): at android.app.Fragment.performCreateView(Fragment.java:1700) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062) E/AndroidRuntime( 1342): at android.app.BackStackRecord.run(BackStackRecord.java:684) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:479) E/AndroidRuntime( 1342): at android.support.v13.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:145) E/AndroidRuntime( 1342): at android.support.v4.view.ViewPager.populate(ViewPager.java:1073) E/AndroidRuntime( 1342): at android.support.v4.view.ViewPager.populate(ViewPager.java:919) E/AndroidRuntime( 1342): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404) E/AndroidRuntime( 1342): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695) E/AndroidRuntime( 1342): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) E/AndroidRuntime( 1342): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000) E/AndroidRuntime( 1342): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670) E/AndroidRuntime( 1342): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761) E/AndroidRuntime( 1342): at android.view.Choreographer.doCallbacks(Choreographer.java:574) E/AndroidRuntime( 1342): at android.view.Choreographer.doFrame(Choreographer.java:544) E/AndroidRuntime( 1342): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747) E/AndroidRuntime( 1342): at android.os.Handler.handleCallback(Handler.java:733) E/AndroidRuntime( 1342): at android.os.Handler.dispatchMessage(Handler.java:95) E/AndroidRuntime( 1342): at android.os.Looper.loop(Looper.java:136) E/AndroidRuntime( 1342): at android.app.ActivityThread.main(ActivityThread.java:5017) E/AndroidRuntime( 1342): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime( 1342): at java.lang.reflect.Method.invoke(Method.java:515) E/AndroidRuntime( 1342): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) E/AndroidRuntime( 1342): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) E/AndroidRuntime( 1342): at dalvik.system.NativeStart.main(Native Method) W/ActivityManager( 376): Force finishing activity org.xwalk.core.xwview.shell/.XWalkViewShellActivity

    JIRA | 2 years ago | Dong Jun
    java.lang.NullPointerException
  2. 0

    Reproduce Test Steps ==================== Enable lzma support: run gyp_xwalk --use_lzma=1 build XWalkCoreShell.apk. Expected Outcome ================ Not crash. Actual Outcome ============== Crashed. Test Case Source Code ===================== Test Builds =========== Issue Analysis ============== in org.xwalk.core.XWalkPreferences.setValue(XWalkPreferences.java:107) this rely on coreWrapper, which will be initialized after lzma decompressed. So the solution is place XWalkViewShellActivity.setContentView in onXWalkReady. call sequence: XWalkViewShellActivity.setContentView -> XWalkViewSectionFragment.onCreate -> XWalkViewSectionFragment.onCreateView -> XWalkViewShellActivity.onXWalkViewCreated -> XWalkPreferences.setValue (coreWrapper is null) crash stack: D/XWalkActivity( 1342): Reserve object: class org.xwalk.core.XWalkView D/XWalkActivity( 1342): Reserve object: class org.xwalk.core.xwview.shell.XWalkViewShellActivity$11 D/XWalkActivity( 1342): Reserve method: setResourceClient D/XWalkActivity( 1342): Reserve object: class org.xwalk.core.xwview.shell.XWalkViewShellActivity$12 D/XWalkActivity( 1342): Reserve method: setUIClient D/AndroidRuntime( 1342): Shutting down VM W/dalvikvm( 1342): threadid=1: thread exiting with uncaught exception (group=0xb1b0eba8) E/AndroidRuntime( 1342): FATAL EXCEPTION: main E/AndroidRuntime( 1342): Process: org.xwalk.core.xwview.shell, PID: 1342 E/AndroidRuntime( 1342): java.lang.NullPointerException E/AndroidRuntime( 1342): at org.xwalk.core.XWalkPreferences.setValue(XWalkPreferences.java:107) E/AndroidRuntime( 1342): at org.xwalk.core.xwview.shell.XWalkViewShellActivity.onXWalkViewCreated(XWalkViewShellActivity.java:367) E/AndroidRuntime( 1342): at org.xwalk.core.xwview.shell.XWalkViewSectionFragment.onCreateView(XWalkViewSectionFragment.java:42) E/AndroidRuntime( 1342): at android.app.Fragment.performCreateView(Fragment.java:1700) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062) E/AndroidRuntime( 1342): at android.app.BackStackRecord.run(BackStackRecord.java:684) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447) E/AndroidRuntime( 1342): at android.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:479) E/AndroidRuntime( 1342): at android.support.v13.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:145) E/AndroidRuntime( 1342): at android.support.v4.view.ViewPager.populate(ViewPager.java:1073) E/AndroidRuntime( 1342): at android.support.v4.view.ViewPager.populate(ViewPager.java:919) E/AndroidRuntime( 1342): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404) E/AndroidRuntime( 1342): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695) E/AndroidRuntime( 1342): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125) E/AndroidRuntime( 1342): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) E/AndroidRuntime( 1342): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291) E/AndroidRuntime( 1342): at android.view.View.measure(View.java:16497) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295) E/AndroidRuntime( 1342): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000) E/AndroidRuntime( 1342): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670) E/AndroidRuntime( 1342): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761) E/AndroidRuntime( 1342): at android.view.Choreographer.doCallbacks(Choreographer.java:574) E/AndroidRuntime( 1342): at android.view.Choreographer.doFrame(Choreographer.java:544) E/AndroidRuntime( 1342): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747) E/AndroidRuntime( 1342): at android.os.Handler.handleCallback(Handler.java:733) E/AndroidRuntime( 1342): at android.os.Handler.dispatchMessage(Handler.java:95) E/AndroidRuntime( 1342): at android.os.Looper.loop(Looper.java:136) E/AndroidRuntime( 1342): at android.app.ActivityThread.main(ActivityThread.java:5017) E/AndroidRuntime( 1342): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime( 1342): at java.lang.reflect.Method.invoke(Method.java:515) E/AndroidRuntime( 1342): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) E/AndroidRuntime( 1342): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) E/AndroidRuntime( 1342): at dalvik.system.NativeStart.main(Native Method) W/ActivityManager( 376): Force finishing activity org.xwalk.core.xwview.shell/.XWalkViewShellActivity

    JIRA | 2 years ago | Dong Jun
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.xwalk.core.XWalkPreferences.setValue()
    2. org.xwalk.core
      XWalkViewSectionFragment.onCreateView
      1. org.xwalk.core.XWalkPreferences.setValue(XWalkPreferences.java:107)
      2. org.xwalk.core.xwview.shell.XWalkViewShellActivity.onXWalkViewCreated(XWalkViewShellActivity.java:367)
      3. org.xwalk.core.xwview.shell.XWalkViewSectionFragment.onCreateView(XWalkViewSectionFragment.java:42)
      3 frames
    3. Android Platform
      FragmentManagerImpl.executePendingTransactions
      1. android.app.Fragment.performCreateView(Fragment.java:1700)
      2. android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890)
      3. android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
      4. android.app.BackStackRecord.run(BackStackRecord.java:684)
      5. android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
      6. android.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:479)
      6 frames
    4. android-support-v13
      FragmentPagerAdapter.finishUpdate
      1. android.support.v13.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:145)
      1 frame
    5. Android Support v4
      ViewPager.onMeasure
      1. android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
      2. android.support.v4.view.ViewPager.populate(ViewPager.java:919)
      3. android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
      3 frames
    6. Android Platform
      ViewGroup.measureChildWithMargins
      1. android.view.View.measure(View.java:16497)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
      3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
      4. android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
      5. android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
      6. android.view.View.measure(View.java:16497)
      7. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
      8. android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
      9. android.view.View.measure(View.java:16497)
      10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
      10 frames
    7. Android
      ActionBarOverlayLayout.onMeasure
      1. com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327)
      1 frame
    8. Android Platform
      FrameLayout.onMeasure
      1. android.view.View.measure(View.java:16497)
      2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
      3. android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
      3 frames
    9. Android
      PhoneWindow$DecorView.onMeasure
      1. com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
      1 frame
    10. Android Platform
      ActivityThread.main
      1. android.view.View.measure(View.java:16497)
      2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916)
      3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113)
      4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295)
      5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
      6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
      7. android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
      8. android.view.Choreographer.doCallbacks(Choreographer.java:574)
      9. android.view.Choreographer.doFrame(Choreographer.java:544)
      10. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
      11. android.os.Handler.handleCallback(Handler.java:733)
      12. android.os.Handler.dispatchMessage(Handler.java:95)
      13. android.os.Looper.loop(Looper.java:136)
      14. android.app.ActivityThread.main(ActivityThread.java:5017)
      14 frames
    11. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invokeNative(Native Method)
      2. java.lang.reflect.Method.invoke(Method.java:515)
      2 frames
    12. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
      2 frames
    13. Android Platform
      NativeStart.main
      1. dalvik.system.NativeStart.main(Native Method)
      1 frame