clear the contents of the editText when long press on Back Space Key

问题

Because my editext is the string format it doesn't clear all the text when i long press on the backspace key. so i am looking for solution to clear all text when long press on the backspace key ??

回答1:

Try this

@Override 
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_DEL) 
  { 
    textView.setText("");
    return true; 
  } 
return super.onKeyLongPress(keyCode, event);

回答2:

You can do it by overriding onKeyLongPress() like

@Override 
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) 
{ 
    TextView myTextView = (TextView) findViewById(R.id.myTextView);
    myTextView.setText("");
    return true; 
} 
return super.onKeyLongPress(keyCode, event);

}

来源：https://stackoverflow.com/questions/45428633/clear-the-contents-of-the-edittext-when-long-press-on-back-space-key