类似的查询：等到所有线程在java中完成它们的工作
您好，我正在开发包含某种倒数计时器的 android 应用程序。我的问题是，我有多个倒计时计时器，它们设置 TextView 的文本并且必须单独工作（第一个倒计时计时器必须等到第二个计时器完成等）
见代码：
MyCountDownTimer.java
public class MyCountdownTimer extends CountDownTimer {
TextView tv;
// default constructor
public MyCountdownTimer (long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
// constructor
public MyCountdownTimer(int hours, int mins, int secs,
long countDownInterval, TextView tv) {
super(3600000 * hours + 60000 * mins + secs * 1000, countDownInterval);
this.tv = tv;
// all other settings
}
// when finished, set text of textview to done
@Override
public void onFinish() {
tv.setText("done!");
}
// when working periodically update text of text view to value of time left
@Override
public void onTick(long millisUntilFinished) {
tv.setText(/*function setting text of TextView based on time left*/);
}
}
定时器.java
public class Timer extends Fragment {
Button bStart;
Button bStop;
TextView tvShowTime;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.timer, container, false);
}
public void onStart() {
super.onStart();
bStart = (Button) getView().findViewById(R.id.bTimerStart);
bStop = (Button) getView().findViewById(R.id.bTimerStop);
tvShowTime = (TextView) getView().findViewById(R.id.showTime);
// setting on button start click
bStart.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
timerStart();
}
});
// setting on button stop click
bStop.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
timerStop();
}
});
}
private void timerStart() {
bStart.setClickable(false);
int repeat = 2;
int hour, mins, secs;
for (int i = 0; i < 2 * repeat; i++) {
if (i % 2 == 0) {
// setting working count down timer values
mins = 1;
} else {
// setting resting count down timer values
secs = 30;
}
timerCount = new MyCountdownTimer(hours, mins, secs, REFRESH_RATE,
tvShowTime);
timerCount.start();
//////////////////////////////////////////////////
// HERE I WANT TO WAIT UNTIL COUNTDOWN IS DONE //
// ATM SECOND, THIRD AND FOURTH COUNT DOWN //
// TIMER IS STARTED //
//////////////////////////////////////////////////
}
}
- 编辑 -
最后我做了 2 个 CountDownTimers，第一个调用 onFinish() 第二个，第二个调用第一个，直到 repeat = 0; 最后，这对我来说是最好的解决方案。无论如何感谢您的帮助，@Triode 的回答对我帮助很大