How to open file with default application on Android (SDK 23 and above) using QDesktopServices

[Devoo]

Hi,
I try to open pdf file with default application on Android (SDK 23 or above) using QDesktopServices like that (old code):

QDesktopServices desk;
desk.openUrl(QUrl("file:/storage/emulated/0/Download/test.pdf"));

I know that file:// prefix is not allowed anymore.
We should send the URI through content:// scheme instead.
I don't understand how implement this feature.
This code:

QDesktopServices desk;
desk.openUrl(QUrl("content:///storage/emulated/0/Download/test.pdf"));

opens the default application, but the file is not loaded.

Qt 5.13.1 (QFile works as expected).
NDK 19c
Android 9.0

Help.

[Devoo]

I found solution.
https://developer.android.com/reference/android/support/v4/content/FileProvider

[mvuori]

Setting up FileProvider seems a lot of unnecessary somewhat complicated (for people who visit the Java side every two years...) work for keeping old apps running. Today I ran into a piece of Java code that enables openUrl:

public static void allowUriSchemes() {
        if (android.os.Build.VERSION.SDK_INT >= 23) {
            // Regular file:// is disabled
            try {
                final Method m = StrictMode.class.getMethod("disableDeathOnFileUriExposure");
                m.invoke(null);
            } catch (final Exception e) {}
        }
    }

[Rizni]

@mvuori Where did you wrote this code can you guide me please, I'm new to Qt andriod