How to listener the soft keyboard key event

Question

how to know when I press the delete key from the soft keyboard in android, an event the content of the edittext is empty. I know when the content is not empty, can use TextChangeListener. Only the empty content how to listen the pressed key.

Possible duplicate of [How to listen the keypress in the soft keyboard?](https://stackoverflow.com/questions/10616567/how-to-listen-the-keypress-in-the-soft-keyboard) — AskNilesh, Nov 03 '17 at 07:08
setListener is not worked in same android system. Finally I got a smart idea, which can use a space replace by ImageSpan，and set picture size is 0*0. So there always will not be empty. — dndxxiangyu, Dec 21 '17 at 09:32

score -1 · Answer 1 · answered Nov 03 '17 at 07:11

-1

KeyEvent provides keyboard events

@Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            // Do Code here
        }
        return super.onKeyDown(keyCode, event);
    }

answered Nov 03 '17 at 07:11

rajahsekar

916
1
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score -1 · Accepted Answer · answered Dec 21 '17 at 09:33

-1

setListener is not worked in same android system. Finally I got a smart idea, which can use a space replace by ImageSpan，and set picture size is 0*0. So there always will not be empty.

answered Dec 21 '17 at 09:33

dndxxiangyu

29
1
3

How to listener the soft keyboard key event

2 Answers2