Return back to MainActivity from another activity

Question

The MainActivity contains some buttons. Each button opens a new activity via an intent. These activities then have a button to return to the MainActivity<

Answer 1

use

Intent returnBtn = new Intent(getApplicationContext(),
                    MainActivity.class);

startActivity(returnBtn);

make the main activity's launchmode to singleTask in Android Manifest if you don't want to create new one every time.

android:launchMode="singleTask"