java.lang.SecurityException camera permission denied on android api 33

Question

Hi, I have deployed an app that's been working fine on android with api < 33, yet, the error "Camera permissions denied" occurs on all devices running api 33. My manifest file is as follows:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="32" />
<uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
<uses-permission android:name="android.permission.CAMERA" />
<queries>
	<intent>
		<action android:name="android.media.action.IMAGE_CAPTURE" />
	</intent>
</queries>
<uses-sdk android:targetSdkVersion="33" android:minSdkVersion="21" />

This is the code in my code-behind:

private async Task<FileResult> SelectPhotoAsync(Dtos.EvaluationPictureDetailsVM evaluationPicture)
{

#if ANDROID             
		// this will run for Android 33 and greater
		if (DeviceInfo.Platform == DevicePlatform.Android && OperatingSystem.IsAndroidVersionAtLeast(33))
		{                 
			var activity = Platform.CurrentActivity ?? throw new NullReferenceException("Current activity is null");
			if (ContextCompat.CheckSelfPermission(activity, Manifest.Permission.ReadExternalStorage) != Permission.Granted)
			{
				ActivityCompat.RequestPermissions(activity, new[] { Manifest.Permission.ReadExternalStorage }, 1);                 
			}
			PermissionStatus cameraPermissionsStatus = await Permissions.CheckStatusAsync<Permissions.Camera>(); //=> always returns false
			if (cameraPermissionsStatus  == PermissionStatus.Denied)
			{                     
				bool shouldShowRationale = Permissions.ShouldShowRationale<Permissions.Camera>(); //=> always false 
				if(shouldShowRationale)
				{                         
					await Shell.Current.DisplayAlert("Warning", "Camera permissions are required in order to take a picture", "Ok");                     
				}
				cameraPermissionsStatus  = await Permissions.RequestAsync<Permissions.Camera>(); //=> now set to true
			}                  
			var cameraPermissions = ContextCompat.CheckSelfPermission(activity, Manifest.Permission.Camera); //=> always false
			if (cameraPermissions != Permission.Granted)
			{
				ActivityCompat.RequestPermissions(activity, new[] { Manifest.Permission.Camera }, 1); //=> does it actually do anything? cameraPermissions remains false
			}                              
		} 
#endif

	if (MediaPicker.Default.IsCaptureSupported)
	{
		if (await MediaPicker.Default.CapturePhotoAsync(opts) is FileResult chosenPhoto) // HERE THE ERROR OCCURS
		{     
			return chosenPhoto; 
		}
		await Shell.Current.DisplayAlert("Error", "Unable to take the picture", "Ok");
	}
}

I know Google changed the permissions thing starting from api 33, and, from my understanding, the permissions should not be declared anymore in the manifest file, so I've tried all kind of combinations removing the camera permissions from the manifest file, as well as limiting its application with "maxSdkVersion=32", it just won't work.

Answer 1

Firstly, please remove request android permission code (code in #If android ....#end if). Then uninstall your application in the tested devices or emulators. After that, run FileResult photo = await MediaPicker.Default.CapturePhotoAsync();, it will popup permission alert, you do not need to write android request runtime permission code.