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  1. Qt
  2. QTBUG-84073

QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) isn't writable in Android 10

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Duplicate
    • Affects Version/s: 5.15.0 RC
    • Fix Version/s: None
    • Component/s: Core: I/O
    • Environment:
      Qt 15.5.0-RC + SDK Version: 26.1.1, NDK Bundle Version: 21.1.6352462 + buildToolsVersion '29.0.3' + targetSdkVersion = 29
    • Platform/s:
      Android

      Description

      Android 10 introduced Scoped Storage and, unless AndroidManifest.xml declares android:requestLegacyExternalStorage="true", QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) is no longer writable. Writing in such a location fails with a 'device no open' error.

      qstandardpaths_android.cpp uses Android's Environment.getExternalStoragePublicDirectory(), which is deprecated in API level 29. It should probably be changed to Context.getExternalFilesDir() and, optionally, handle the URI permissions to make it available for other applications if it's the case.

      I can try a patch if you give me some directions on where to point those locations to.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-87803 QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) points to an inaccessible location

          • 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
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              Assignee:
              assam Assam Boudjelthia
              Reporter:
              sandroandrade Sandro S. Andrade
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                Dates

                Created:
                Updated:
                Resolved:

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