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  1. Qt
  2. QTBUG-124780

Camera preview not working in a Popup with Android native backend

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P2: Important P2: Important
    • 6.9.1
    • 6.7.0
    • Multimedia
    • None
    • Android
    • 2025wk26s2QtforAndroid

      Attached is the modified declarative-camera.zip application:

      • Camera is opened in a popup
      • Uses android backend for multimedia

      Camera preview does not work (shows black screen) when opened in a popup.

      Log shows the following message:

      E larative_camer: [SurfaceTexture-5-20136-3] checkAndUpdateEglState: invalid current EGLDisplay
W libdeclarative-camera_arm64-v8a.so: java.lang.IllegalStateException: Unable to update texture contents (see logcat for details)
W libdeclarative-camera_arm64-v8a.so: 	at android.graphics.SurfaceTexture.nativeUpdateTexImage(Native Method)
W libdeclarative-camera_arm64-v8a.so: 	at android.graphics.SurfaceTexture.updateTexImage(SurfaceTexture.java:249)

      Note: with ffmpeg backend, it works as expected.
      Note: without the popup (unmodified declarative-camera example), it works as expected with both backends.

      So we can assume the issue is specifically with the android backend.

        1. declarative-camera.zip
          292 kB
          Jarkko Koivikko
        2. QTBUG-124780_FFMPEG_vs_ANDROID.mp4
          1.32 MB
          Bartlomiej Moskal
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            bartlomiejmoskal Bartlomiej Moskal
            jakoivik Jarkko Koivikko
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              Created:
              Updated:
              Resolved:

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