Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
935 views
in Technique[技术] by (71.8m points)

android - EditText OnKeyDown

I have declared an EditText programmatically (i.e. not in XML), and want to apply an OnKeyDown handler to it. The code shown does not work. The context is, I'm trying to capture a short string from the keyboard, which should not include control characters (I've started with the Enter key). Maybe there is a better way?

Thanks!

        public EditText ttsymbol;

/** Called when the activity is first created. */
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) { 
        switch (keyCode) { 
        case KeyEvent.KEYCODE_ENTER: 
            // IGNOREenter key!! 
            return true; 

        }return false; 
  }
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You must bind the onKeyListener to your editText.

myEditText.setOnKeyListener(new OnKeyListener() {           
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                if (event.getAction()==KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_ENTER) {
                    //do something here
                    return true;
                }
                return false;
            }
        });

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...