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This article mainly introduces how to press the return key to exit the program in Android, which is very detailed and has a certain reference value. Interested friends must finish reading it!

The practice of most apps is to give a Dialog before the app is withdrawn, which I don't think is very friendly, and the user has to move his finger to press the button in the dialog. Personally, I think "press the return key again to exit the program" is best practice, the implementation is also very simple, directly on the code:

Private long exitTime = 0; @ Override public boolean onKeyDown (int keyCode, KeyEvent event) {if (keyCode = = KeyEvent.KEYCODE_BACK & & event.getAction () = = KeyEvent.ACTION_DOWN) {if ((System.currentTimeMillis ()-exitTime) > 2000) {Toast.makeText (getApplicationContext (), "click again to exit the program", Toast.LENGTH_SHORT). Show (); exitTime = System.currentTimeMillis ();} else {finish (); System.exit (0);} return true;} return super.onKeyDown (keyCode, event) } these are all the contents of the article "how to press the return key to exit the program again in Android". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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