press back again to exit android

private var backPressedTime:Long = 0 lateinit var backToast:Toast override fun onBackPressed() { backToast = Toast.makeText(this, "Press back again to leave the app.", Toast.LENGTH_LONG) if (backPressedTime + 2000 > System.currentTimeMillis()) { backToast.cancel() super.onBackPressed() return } else { backToast.show() } backPressedTime = System.currentTimeMillis() }

android press back 2 times to exit

boolean doubleBackToExitPressedOnce = false;

@Override
public void onBackPressed() {
    if (doubleBackToExitPressedOnce) {
        super.onBackPressed();
        return;
    }
        
    this.doubleBackToExitPressedOnce = true;
    Toast.makeText(this, "Please click BACK again to exit", Toast.LENGTH_SHORT).show();
        
    new Handler(Looper.getMainLooper()).postDelayed(new Runnable() {
        
        @Override
        public void run() {
            doubleBackToExitPressedOnce=false;                       
        }
    }, 2000);
}

Posted by: Guest on August-30-2021

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