倒計時計時器爲android

Question

我已經爲倒數計時器做了單獨的項目，它工作正常。現在我必須在我的比賽中運用它。所以我需要一個建議，應該在哪裏調用計時器？在線程中，我在給遊戲視圖引用還是在遊戲視圖類中的主類中？

Answer 1

由於定時器本身是一個線程，每個定時器都有一個線程，在這個線程上順序執行任務。當此線程忙於運行任務時，可運行的任務可能會受到延遲。所以，你應該打電話給你的線程從主類

Answer 2

CountDownTimer將顯示格式化你的天，小時，分鐘和秒的時間都在一個TextView：

public class DemotimerActivity extends Activity { 
     /** Called when the activity is first created. */ 
     TextView tv; 
     long diff; 
     long milliseconds; 
     long endTime; 
     @Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 

      tv = new TextView(this); 
      this.setContentView(tv); 
      SimpleDateFormat formatter = new SimpleDateFormat("dd.MM.yyyy, HH:mm"); 
      formatter.setLenient(false); 


      String oldTime = "21.10.2013, 12:00"; 
      Date oldDate; 
      try { 
       oldDate = formatter.parse(oldTime); 
       milliseconds = oldDate.getTime(); 

       //long startTime = System.currentTimeMillis(); 
       // do your work... 
       long endTime=System.currentTimeMillis(); 

       diff = endTime-milliseconds;  

       Log.e("day", "miliday"+diff); 
       long seconds = (long) (diff/1000) % 60 ; 
       Log.e("secnd", "miliday"+seconds); 
       long minutes = (long) ((diff/(1000*60)) % 60); 
       Log.e("minute", "miliday"+minutes); 
       long hours = (long) ((diff/(1000*60*60)) % 24); 
       Log.e("hour", "miliday"+hours); 
       long days = (int)((diff/(1000*60*60*24)) % 365); 
       Log.e("days", "miliday"+days); 
      } catch (ParseException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 


      Long serverUptimeSeconds = (System.currentTimeMillis() - milliseconds)/1000; 


       String serverUptimeText = String.format("%d days %d hours %d minutes %d seconds", 
       serverUptimeSeconds/86400, 
       (serverUptimeSeconds % 86400)/3600 , 
       ((serverUptimeSeconds % 86400) % 3600)/60, 
       ((serverUptimeSeconds % 86400) % 3600) % 60 
       ); 


      Log.v("jjj", "miliday"+serverUptimeText); 
      MyCount counter = new MyCount(milliseconds,1000); 
      counter.start(); 


     } 


     // countdowntimer is an abstract class, so extend it and fill in methods 
     public class MyCount extends CountDownTimer { 
      public MyCount(long millisInFuture, long countDownInterval) { 
       super(millisInFuture, countDownInterval); 
      } 

      @Override 
      public void onFinish() { 
       tv.setText("done!"); 
      } 

      @Override 
      public void onTick(long millisUntilFinished) { 
       //tv.setText("Left: " + millisUntilFinished/1000); 

       long diff = endTime - millisUntilFinished; 
       Log.e("left", "miliday"+diff); 
       long seconds = (long) (diff/1000) % 60 ; 
       //Log.e("secnd", "miliday"+seconds); 
       long minutes = (long) ((diff/(1000*60)) % 60); 
       //Log.e("minute", "miliday"+minutes); 
       long hours = (long) ((diff/(1000*60*60)) % 24); 
       //Log.e("hour", "miliday"+hours); 
       int days = (int)((diff/(1000*60*60*24)) % 365); 
       Log.v("days", "miliday"+days); 


       Long serverUptimeSeconds = 
         (System.currentTimeMillis() - millisUntilFinished)/1000; 


        String serverUptimeText = 
        String.format("%d days %d hours %d minutes %d seconds", 
        serverUptimeSeconds/86400, 
        (serverUptimeSeconds % 86400)/3600 , 
        ((serverUptimeSeconds % 86400) % 3600)/60, 
        ((serverUptimeSeconds % 86400) % 3600) % 60 
        ); 

        Log.v("new its", "miliday"+serverUptimeText); 

       // tv.setText(days +":"+hours+":"+minutes + ":" + seconds); 

        tv.setText(serverUptimeText); 
      } 
     } 
    }