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  1. Qt
  2. QTBUG-123711

QtQuickView doesn't handle recreation of Activity properly

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Details

    • Android
    • 6d2db42f7 (dev)

    Description

      If the embedding Activity is recreated, for example due to orientation change, resources don't seem to be properly cleared up, leading to a crash after enough recreations have happened.

      When the Activity is recreated, for example due to not-overridden orientation change, the app gets stuck.

      Before https://codereview.qt-project.org/c/qt/qtbase/+/557217 whenever the Activity got destroyed, we also called system.exit(), hence quitting the whole app, and it just got restarted with the new Activity, making it look like it worked, for a while. However, removing the system.exit() call lead to other issues, like the QtThread instance already being stopped.

      Steps to reproduce:

      • Remove the line android:configChanges="orientation|screenLayout|screenSize" from the example's (qtquickview_java or another embedded QML example) AndroidManifest.xml
      • start the example
      • switch the orientation of the emulator/device

       

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        Issue Links

          is blocked by

          Technical task - A technical task. QTBUG-124114 QtLoader: only try to load the libraries once

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          is required for

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. QTBUG-125088 Embedded QML and Qt Quick for Android on Qt 6.9

          • Not Evaluated - Not yet evaluated/prioritized
          • Open

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. QTBUG-125086 Embedded QML and Qt content as Android View work for Qt 6.8

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-125145 Starting a new Activity with embedded QML crashes when one already exists

          • 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.
          • Reported
          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-123306 Orientation issues with embedding QML to Android Java application

          • 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
          For Gerrit Dashboard: QTBUG-123711
          # Subject Branch Project Status CR V
          557217,4 Android: Do not call exit when embedded Qt application is stopped dev qt/qtbase Status: MERGED +2 0

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              tinjapaavoseppa Tinja Paavoseppä
              tinjapaavoseppa Tinja Paavoseppä
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              Dates

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                Updated:

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