Xamarin/Android write of camrea-CodePudding


using Android.App;
using Android.Content.PM;
using Android.OS;
using AndroidX.Core.App;
using Android;
using AndroidX.Core.Content;
using Java.Util.Concurrent;
using AndroidX.Camera.Lifecycle;
using AndroidX.Camera.Core;
namespace BadClaims
{
    [Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
    public class MainActivity : MauiAppCompatActivity
    {
        private string[] REQUIRED_PERMISSIONS = new[] { Manifest.Permission.Camera, Manifest.Permission.RecordAudio, Manifest.Permission.WriteExternalStorage };
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            if (allPermissionsGranted()) return;
            ActivityCompat.RequestPermissions(this, new[] { Manifest.Permission.Camera, Manifest.Permission.RecordAudio, Manifest.Permission.WriteExternalStorage }, 10);
        }
        private IExecutorService cameraExecutor { get; set; } = null!;
        private bool allPermissionsGranted() => REQUIRED_PERMISSIONS.Select(x => ContextCompat.CheckSelfPermission(BaseContext, x)).ToList().All(x => x == Permission.Granted);
        protected override void OnDestroy()
        {
            base.OnDestroy();
            cameraExecutor?.Shutdown();
        }
        private async void startCam() {
          var cameraProviderFuture = ProcessCameraProvider.GetInstance(BaseContext);
           // var x= cameraProviderFuture.Get();
     
         //   var preview = new Preview.Builder().Build().;
         
           // cameraProviderFuture.AddListener( ,ContextCompat.GetMainExecutor(BaseContext));
        }
    }
}

As you can se i try to understand xamarin what i like to focus on is "var cameraProviderFuture"
What i like to is that i like to stream to MP4 file.. and i can choice between any camrea in a android.
Basic
1.) get all camrea devices in android.
2.) Start and stop..
3.) Make it to a format maybe MP4 easy format to understand to a stream.. 4.) whit out any surix or layout

I try to convert from a java..
Im pretty lost..
i cant finde any infomation about how to finde how many camera..
I like to use. Camerax.

CodePudding user response：

The libraries using Camera2 needs have been integrated into the xamarin, so you can use it according to the native android official document.

Official binding library document for Camera2: https://github.com/xamarin/AndroidX/tree/main/source/androidx.camera

Binding library doc: https://learn.microsoft.com/en-us/xamarin/android/platform/binding-java-library/