I found solution here
can we open download folder via. intent?
This code works perfect in my Samsung J7 to open Pictures folder (and others) from internal memory using Samsung default application My files.
File path = new File(Environment.getExternalStorageDirectory(), Environment.DIRECTORY_PICTURES);
Uri uri = Uri.fromFile(path);
Intent intent = getPackageManager().getLaunchIntentForPackage("com.sec.android.app.myfiles");
intent.setAction("samsung.myfiles.intent.action.LAUNCH_MY_FILES");
intent.putExtra("samsung.myfiles.intent.extra.START_PATH", path.getAbsolutePath());
startActivity(intent);
It seems like we have to decompile File Manager of each manufacturer to see how to call it properly. :( And it is too much work. Well... I assumed there is some generic solution to do it.
