FileOpenPicker incorrectly shows SettingsIdentifier and SuggestedStartLocation as implemented

[pkar70]

Current behavior

At least on Android, FileOpenPicker has missing not implemented attribute for SettingsIdentifier and SuggestedStartLocation.

Expected behavior

These two settings should be marked as unimplemented, and decision if it can be ignored should be left to app programmer.
Or, better, these settings should be implemented.

How to reproduce it (as minimally and precisely as possible)

Workaround

None.

Environment

Nuget Package:

• Uno.UI / Uno.UI.WebAssembly / Uno.UI.Skia
• Uno.WinUI / Uno.WinUI.WebAssembly / Uno.WinUI.Skia
• Uno.SourceGenerationTasks
• Uno.UI.RemoteControl / Uno.WinUI.RemoteControl
• Other: Uno.UWP

Nuget Package Version(s):

Affected platform(s):

• iOS
• Android
• WebAssembly
• WebAssembly renderers for Xamarin.Forms
• macOS
• Skia
  • WPF
  • GTK (Linux)
  • Tizen
• Windows
• Build tasks
• Solution Templates

IDE:

• Visual Studio 2017 (version: )
• Visual Studio 2019 (version: )
• Visual Studio for Mac (version: )
• Rider Windows (version: )
• Rider macOS (version: )
• Visual Studio Code (version: )

Relevant plugins:

• Resharper (version: )

Anything else we need to know?

[Youssef1313]

Looks like it's now implemented with https://github.com/unoplatform/uno/pull/5237/files#diff-25a01b26e1efd8cc1cee15bdfaad01d041a59fd807e03467780df92da8076bbeR27-R30.

GitHub

FileOpenPicker, FileSavePicker on Skia WPF, collections, common properties by MartinZikmund · Pull Request #5237 · unoplatform/uno

GitHub Issue (If applicable): related to #3916, #508, #3215, closes #5234, closes #5235, closes #5239 PR Type What kind of change does this PR introduce?

Feature

What is the current behavior?

Fi...

[pkar70]

Yes, SettingsIdentifier for Android is already implemented - this Issue was created just before I extracted SettingsIdentifier from my old FileOpenPicker PR #2896,
SuggestedStartLocation is harder to implement now, as Android changed API.

[Youssef1313]

@pkar70 I thought both are now implemented?

[pkar70]

It is only marked as implemented. Android code doesn't use this value at all.
Code in #2896 implements SuggestedStartLocation, by using Android.OS.Environment.GetExternalStoragePublicDirectory. But This method was deprecated in API level 29, and (worse) newer Android claims that apps can have only own files, not files shared with other apps. Probably some SuggestedStartLocation can work, but as I have only tablet with Android 8.1 Go Edition, I cannot check it. My desktop is 15 years old, I cannot run Android emulator on it (or any virtual machines - CPU without SLAT).