Implement file provider capabilities

[m4gr3d]

The previously used file sharing api was restricted after Android N causing the engine to crash whenever used on devices running Android N or higher.

3.x version

[akien-mga]

Thanks!

[m4gr3d]

Any documentation about this?

@handre-dev This is the Android implementation behind the OS#shell_open api.

[Calinou]

Maybe I misunderstood, but it seems to me that this is about file sharing on Android. I didn't know Godot had such an API built-in, in fact I made a plugin for it. Am I off track?

See godotengine/godot-proposals#6168.

[m4gr3d]

@Derektamente The issue happens because the <provider> elements are merged using the android:name attribute, so the entry in your plugin's manifest collides with the entry in the Godot library's manifest.

The easy fix is to remove the entry in your plugin's manifest. Since the entry is already contained in the Godot library's manifest, your plugin will still be able to use the FileProvider's capabilities.
Don't forget to update the authority used in FileProvider#getUriForFile(...) to match the value in the Godot library's manifest (e.g: example).

[m4gr3d]

@Derektamente It's because of the differences in the file provider paths configuration:

• Your plugin's:

<paths>
    <files-path path="/" name="filesRoot" />
</paths>

• Godot's configuration:

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">

	<external-path
		name="public"
		path="." />

	<external-files-path
		name="app"
		path="." />
</paths>

You can test by adding your configuration to Godot's; if that fixes the issue, feel free to send a PR to include it in the code base.

[lewiji]

I've helped @Derektamente to get a build with these changes up and running, and they've verified that the change allows the Godroid plugin to work with the changes from this PR. Have created a PR with the change just now