Question

QML 中如何开辟新线程

Answer 1

方法一：重写onBackPressed方法

Java代码
@Override
public void onBackPressed() {
// do something what you want
super.onBackPressed();
}

方法二：重写dispatchKeyEvent

Java代码
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
// TODO Auto-generated method stub
if (event.getAction() == KeyEvent.ACTION_DOWN
&& event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
//do something what you want
return true;//返回true，把事件消费掉，不会继续调用onBackPressed
}
return super.dispatchKeyEvent(event);
}