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Details

Type: Bug
Resolution: Fixed
Priority: P2: Important
Fix Version/s: 6.8.4, 6.9.1, 6.10.0 FF
Affects Version/s: 6.8.2, 6.10
Component/s: QPA: Android
Labels:
- Reported_by_support_standard
Environment:
Pixel 4 Emulator, API Level 31

Platform/s:

Android
Commits:
4a54c32e6 (dev), 7ca68d0e2 (dev), 2054b0021 (6.9), 6e0d7c402 (6.9), 5debb0508 (6.8), d5a2fbc88 (6.8)
Sprint:
2025wk08s1QtforAndroid, 2025wk10s1QtforAndroid

Description

Code

#include <QDesktopServices>
#include <QFile>
#include <QGuiApplication>
#include <QImage>
#include <QStandardPaths>
#include <QUrl>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QFile imgFile(QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/example.png");
    auto imgUrl = QUrl::fromLocalFile(imgFile.fileName());

    QImage img(100, 100, QImage::Format_RGB32);
    img.fill(Qt::green);

    if (imgFile.open(QIODevice::WriteOnly))
    {
        qDebug() << "Saving image to" << imgUrl;
        qDebug() << img.save(&imgFile);
        imgFile.close();
    }
    else
        qWarning() << "Failed to open example.png for writing!";

    qDebug() << "Attempting to launch external viewer...";
    QDesktopServices::openUrl(imgUrl);

    return app.exec();
}

Outcomes

D/libFileProviderTest_x86_64.so: Saving image to QUrl("file:///storage/emulated/0/Android/data/org.qtproject.example.FileProviderTest/files/Documents/example.png")
D/libFileProviderTest_x86_64.so: true
D/libFileProviderTest_x86_64.so: Attempting to launch external viewer...
W/libFileProviderTest_x86_64.so: java.lang.IllegalArgumentException: Failed to find configured root that contains /storage/emulated/0/Android/data/org.qtproject.example.FileProviderTest/files/Documents/example.png
W/libFileProviderTest_x86_64.so:     at androidx.core.content.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:867)
W/libFileProviderTest_x86_64.so:     at androidx.core.content.FileProvider.getUriForFile(FileProvider.java:467)
W/libFileProviderTest_x86_64.so:     at org.qtproject.qt.android.QtNative.startQtApplication(Native Method)
W/libFileProviderTest_x86_64.so:     at org.qtproject.qt.android.QtNative$$ExternalSyntheticLambda4.run(D8$$SyntheticClass:0)
W/libFileProviderTest_x86_64.so:     at org.qtproject.qt.android.QtThread$1.run(QtThread.java:25)
W/libFileProviderTest_x86_64.so:     at java.lang.Thread.run(Thread.java:920)
W/libFileProviderTest_x86_64.so: 
D/ProfileInstaller: Installing profile for org.qtproject.example.FileProviderTest

Notes
I tried modifying "qtprovider_paths.xml" to change path="/" to path="Documents/" but the outcome was the same.