定时器只有当我触摸显示动作(OnTouchListener)
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27-09-2019 - |
题
在定时器工作正常。问题是,该方法_dw.newgame()只得到执行(如果两个秒以上),如果我触摸显示器。也许它有东西做的“OnTouchListener”?
public class DrawView extends View implements OnTouchListener{
Timer timer = new Timer();
public DrawView(Context context)
{
timer.schedule(new Task(this),0, 2000);
}
public boolean onTouch(View view, MotionEvent event)
{}
}
class Task extends TimerTask
{
private DrawView _dw;
public Task(DrawView dw){ this._dw = dw;}
public void run()
{ _dw.newgame(); }
}
解决方案
也许你应该在onCreate
方法启动定时器:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(Bundle savedInstanceState);
timer = new Timer();
timer.schedule(new Task(this), 0, 2000);
}
第二次尝试与处理程序:
public class DrawView extends View implements OnTouchListener{
private Timer timer = new Timer();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(Bundle savedInstanceState);
timer = new Timer();
timer.schedule(new TimerTask() {
public void run() {
handler.sendEmptyMessage();
}
}, 0, 2000);
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
newgame();
}
};
}
我没有编译这一点,但它应该像这样工作。结果 我注意到另一件事:我想newgame()应该只被调用一次。
timer.schedule(new Task(this), 0, 2000);确实每2秒这一点。
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