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  1. Qt
  2. QTBUG-124786

[Android] NullPointerException at QtActivityDelegate.java:83

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Details

    • Android
    • 7602f71aa (dev), fcae2b7f2 (6.8), a0a2a8340 (6.7)
    • 2024wk18FOQtforAndroid, 2024wk20s2FOQtforAndroid, 2024wk22s2FOQtforAndroid, 2024wk24s2FOQtforAndroid

    Description

      I've just started updating my apps to Qt 6.7 and I have started seeing a lot of NullPointerException at QtActivityDelegate.java:83 in the Google Play Console.

      Apparently m_layout is null when the activity is being restarted.

       

      QtActivityDelegate.java
          @Override
    public boolean updateActivityAfterRestart(Activity activity) {
        boolean updated = super.updateActivityAfterRestart(activity);
        // TODO verify whether this is even needed, the last I checked the initMembers
        // recreates the layout anyway
        // update the new activity content view to old layout
        ViewGroup layoutParent = (ViewGroup)m_layout.getParent();
        if (layoutParent != null)
            layoutParent.removeView(m_layout);
        m_activity.setContentView(m_layout);
        return updated;
    }

       

      I haven't been able to reproduce it. However here is the full stack trace from the Google Play Console.

      Exception java.lang.RuntimeException:
  at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3537)
  at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:3692)
  at android.app.servertransaction.LaunchActivityItem.execute (LaunchActivityItem.java:83)
  at android.app.servertransaction.TransactionExecutor.executeCallbacks (TransactionExecutor.java:140)
  at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:100)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2235)
  at android.os.Handler.dispatchMessage (Handler.java:107)
  at android.os.Looper.loop (Looper.java:240)
  at android.app.ActivityThread.main (ActivityThread.java:7829)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:512)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1027)
Caused by java.lang.NullPointerException:
  at org.qtproject.qt.android.QtActivityDelegate.updateActivityAfterRestart (QtActivityDelegate.java:83)
  at org.qtproject.qt.android.QtActivityBase.handleActivityRestart (QtActivityBase.java:68)
  at org.qtproject.qt.android.QtActivityBase.onCreate (QtActivityBase.java:99)
  at org.qtproject.qt.android.bindings.QtActivity.onCreate (QtActivity.java:16)
  at org.qtproject.qt.android.bindings.MyQtActivity.onCreate (MyQtActivity.java:369)
  at android.app.Activity.performCreate (Activity.java:7980)
  at android.app.Activity.performCreate (Activity.java:7969)
  at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1306)
  at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3508)

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-126206 Crash on app restart

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-38971 QtActivity did not call through to super.onConfigurationChanged() on orientation change (crash)

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Task - A task that needs to be done. QTBUG-126279 Support the Activity's restart or recreation

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported
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              assam Assam Boudjelthia
              adrian.gabureanu Adrian Gabureanu
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                Updated:
                Resolved:

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