Launch Back Camera On a Button Click?

Question

i just want to know is there any way to launch the backcamera using just intent. i don't want to use intent.putextra thing. so basically my code should look like this

final Intent cameraIntent = new Intent();
            cameraIntent.putExtra("android.intent.extras.CAMERA_FACING", 0);
            cameraIntent.setPackage(defaultCameraPackage);
            cameraIntent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
            cameraIntent.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);
            cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, cameraUrl);
            ((Activity) mContext).startActivityForResult(cameraIntent, CHOOSE_PHOTO_INTENT);

But above code is sometimes launching the front camera. i want to launch the back camera directly. Help me with this if it is possible in Android.

and for opening default camera i use this code:

 public void defaultpackage() {
        PackageManager packageManager = mContext.getPackageManager();

        List<ApplicationInfo> list = packageManager
                .getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);
        for (int n = 0; n < list.size(); n++) {
            if ((list.get(n).flags & ApplicationInfo.FLAG_SYSTEM) == 1) {
                if (list.get(n).loadLabel(packageManager).toString()
                        .equalsIgnoreCase("Camera")) {
                    defaultCameraPackage = list.get(n).packageName;
                    Log.e("package", "" + defaultCameraPackage);
                    break;
                }
            }
        }
    }

Answer 1

if you are looking for reliable way: no can do. note that Intent is launching 3rd-party app, which may read and respect Bundle params or may not... depends on device and default camera app set up. thats why your code may not work everywhere. but still you can try with some additional Intent params, like:

• cameraIntent.putExtra("android.intent.extras.LENS_FACING_FRONT", 0)
• cameraIntent.putExtra("android.intent.extra.USE_FRONT_CAMERA", false)

yours and two above params may cover most cases/apps, but still you won`t be 100% sure

Answer 2

Try this bro, it is working for me.

  val intent : Intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
  intent.putExtra("android.intent.extras.CAMERA_FACING", 0)