How to make file explorer on android?

Question

Android

Need to be able to load a .png image in a game made with Unity for later use. In this case, the target path is initially unknown, and the user must find the file on their own.
It is also known that root folders have different names for different devices.

Answer 1

If it's simple, then something like this:

Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file://" + "/sdcard/test.jpg"), "image/*");
startActivity(intent);

If the mind, then you need to check the permissions to access the gallery.
A piece of code would look something like this:

int permissionStatus = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE);
                    if (permissionStatus == PackageManager.PERMISSION_GRANTED) {
                        Intent intent = new   Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                        startActivityForResult(intent, 2);
                    } else {
                        ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.READ_EXTERNAL_STORAGE},
                                REQUEST_CODE_PERMISSION_READ_EXTERNAL_STORAGE); // call onRequestPermissionsResult to select file from gallery
                    }