Android监听键盘回车键的问题，为什么我没按一次回车键都会添加两个EditText?

Question

paracelnum.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == event.KEYCODE_ENTER){
add_edit = new EditText(getContext());
add_edit.setSingleLine(true);
add_editext_linear.addView(add_edit);
add_edit.setImeOptions(EditorInfo.IME_ACTION_DONE);
add_edit.setInputType(EditorInfo.TYPE_CLASS_TEXT);
add_edit.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == event.KEYCODE_ENTER){
add_edit = new EditText(getContext());
add_editext_linear.addView(add_edit);
add_edit.setSingleLine(true);
add_edit.setImeOptions(EditorInfo.IME_ACTION_DONE);
add_edit.setInputType(EditorInfo.TYPE_CLASS_TEXT);
}

                        return false;
                    }
                });
            }
            return false;
        }
    });

Answer 1

一般是判断up键
boolean isActionUp = (keyEvent.getAction()==KeyEvent.ACTION_UP);

// 这里会收到两次，我们只判断 up

if(!isActionUp)

{

return;

}