public class Stopper implements Runnable {
private long mStartTime;
private volatile int since;
private Handler handler;
private TextView tv;
private Activity activity;
private Context context;
/*
* Constants
* */
public static final int MILISEC_TO_MINUTE = 60000;
public static final int MILISEC_TO_HOUR = 3600000;
/*
* Flags
* */
private boolean mIsRunning;
public Stopper(){
//this.context = context;
activity = (Activity)context;
Message message = Message.obtain();
handler = new Handler(Looper.getMainLooper());
}
public void start(){
mStartTime = System.currentTimeMillis();
mIsRunning = true;
}
public void stop(){
mIsRunning = false;
}
@Override
public void run () {
while (mIsRunning) {
since = (int)(System.currentTimeMillis() - mStartTime);
int hours = (since / MILISEC_TO_HOUR) % 24; // ms -> h; 360 000= 1[h]
int minutes = (since / MILISEC_TO_MINUTE) % 60;// ms -> min; 60 000[ms] = 1[min]
int seconds = (since / 1000) % 60; // ms -> s ;1 000[ms] = 1[s] -> (1000 [ms] /1000)%60 = 1[s]
int ms = since % 1000;
tv.setText(String.format("%02d:%02d:%02d:%03d", hours, minutes, seconds, ms));
//((Activity) context).updateTimerText(String.format("%02d:%02d:%02d:%03d", hours, minutes, seconds, ms));
}
}
public void getStooperTextView(TextView textView)
{
this.tv = textView;
}
public int getSince() {
return since;
}
}
我阅读了一些关于chronometer的教程。它工作正常，直到我开始需要在两个不同的活动中使用计时器。下面的代码行需要返回值。
((Activity) context).updateTimerText(String.format("%02d:%02d:%02d:%03d", hours, minutes, seconds, ms));
所以，我尝试使用Handler类，但为了做到这一点，我需要一个可运行的对象。