QIosFileDialog - properly handle QUrl for assets-library

For QT_PLATFORM_UIKIT 'PicturesLocation' manually appended by "assets-library://".
When converted to QUrl, such a path becomes a valid url, having empty path
and scheme "assets-library". Later in QIOSFileDialog we convert this
path (options()->initialDirectory()) calling QUrl::toLocalPath, which
gives us an empty string and thus we erroneusly select document picker
dialog, not an image picker. So let's also check a scheme, not path
only.

Fixes: QTBUG-107844
Change-Id: If4dd453549b37933cba07b5d7af6e45f2504dd29
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
(cherry picked from commit 402a526b2a87cbf6b7466bacb9dd3d8b7c71d9b2)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 7 insertions, 3 deletions

diff --git a/src/plugins/platforms/ios/qiosfiledialog.mm b/src/plugins/platforms/ios/qiosfiledialog.mm
index 64e9445c43..64c42e0cc4 100644
--- a/src/plugins/platforms/ios/qiosfiledialog.mm
+++ b/src/plugins/platforms/ios/qiosfiledialog.mm
@@ -36,11 +36,15 @@ bool QIOSFileDialog::show(Qt::WindowFlags windowFlags, Qt::WindowModality window
     Q_UNUSED(windowFlags);
     Q_UNUSED(windowModality);
 
-    bool acceptOpen = options()->acceptMode() == QFileDialogOptions::AcceptOpen;
-    QString directory = options()->initialDirectory().toLocalFile();
+    const bool acceptOpen = options()->acceptMode() == QFileDialogOptions::AcceptOpen;
+    const auto initialDir = options()->initialDirectory();
+    const QString directory = initialDir.toLocalFile();
+    // We manually add assets-library:// to the list of paths,
+    // when converted to QUrl, it becames a scheme.
+    const QString scheme = initialDir.scheme();
 
     if (acceptOpen) {
-        if (directory.startsWith("assets-library:"_L1))
+        if (directory.startsWith("assets-library:"_L1) || scheme == "assets-library"_L1)
             return showImagePickerDialog(parent);
         else
             return showNativeDocumentPickerDialog(parent);