实际上，我设计了一个带有处理程序的单独 Timer 类，用于在 textview 上显示分钟和秒。这很好用，因为我已经对其进行了调试，并且处理程序将重新处理句柄，但文本视图没有得到更新，请在这方面帮助我。我将下面的代码标记为 Timer Class。提前致谢。
public class Timer
{
private int _interval;
public int getInterval()
{
return _interval;
}
public void setInterval(int delay)
{
_interval = delay;
}
private Handler handler;
private Runnable _tickHandler;
private Runnable delegate;
private boolean ticking;
public boolean getIsTicking()
{
return ticking;
}
public Timer(int interval)
{
_interval = interval;
handler = new Handler();
}
public Timer(int interval, Runnable onTickHandler)
{
_interval = interval;
setOnTickHandler(onTickHandler);
handler = new Handler();
}
public void start(int interval, Runnable onTickHandler)
{
if (ticking) return;
_interval = interval;
setOnTickHandler(onTickHandler);
handler.postDelayed(delegate, _interval);
ticking = true;
}
public void start()
{
if (ticking) return;
handler.postDelayed(delegate, _interval);
ticking = true;
}
public void stop()
{
handler.removeCallbacks(delegate);
ticking = false;
}
public void setOnTickHandler(Runnable onTickHandler)
{
if (onTickHandler == null) return;
_tickHandler = onTickHandler;
delegate = new Runnable()
{
public void run()
{
if (_tickHandler == null) return;
_tickHandler.run();
handler.postDelayed(delegate, _interval);
}
}
;
}
}
下面是我用于更新文本视图的代码
Timer tmr = new Timer(100,new Runnable()
{
public void run()
{
long millis = System.currentTimeMillis() - mStartTime;
int seconds = (int) (millis / 1000);
int minutes = seconds / 60;
seconds = seconds % 60;
lblDevOnOff.setText("");
lblDevOnOff.setText(String.format("%d:%02d", minutes,seconds));
}
}
);
tmr.start();