https://youtu.be/3jiQGrjOgMM 1. MainActivity.java 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 package com.example.doublebackbuttonexample; import ... public class MainActivity extends AppCompatActivity { private long backBtnTime = 0; protected void onCreate(Bundle savedInstanceState) {...} @Override public void onBackPressed() { //뒤로가기 버튼을 눌렀을 때 호출 long curTime = System.curren..
