How to replace the system.out with Toasts inside a thread [duplicate]

Answer 1

    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            try {
                //pick one:

                //if activity
                Toast.makeText(YOURACTIVITYNAME.this, "help", Toast.LENGTH_LONG).show();

                //if fragment
                Toast.makeText(getActivity(), "help", Toast.LENGTH_LONG).show();
            } catch (final Exception e) {

            }
        }
    });