android 监听返回键

android监听返回键

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
　　
return true;
}
return super.onKeyDown(keyCode, event);
}

event.getRepeatCount() == 0重复次数：1次