設置布爾與定時器android

Question

我想有一個計時器，如20秒，並在每隔5秒，這可能會將布爾值從false更改爲true，它可以在其他秒復位。 例如

Timer t = new Timer(20); 
from seconds 1 - 4 : boolean false 
second 5 : boolean true 

Answer 1

試試這個：

new CountDownTimer(20000, 5000) { 

    public void onTick(long millisUntilFinished) { 

    } 

    public void onFinish() { 
     //your code here for setting the boolean 
    } 
    }.start(); 

Answer 2

new CountDownTimer(20000, 1000) { 
     public void onTick(long millisUntilFinished) { 
     long seconds = millisUntilFinished/1000; 
     Log.d(TAG, "onTick:: seconds="+seconds); 
     if ((seconds % 5) == 0) { 
      Log.d(TAG, "onTick:: 5 seconds lap"); 
      //set your boolean variable to true 
     }else{ 
      //set your boolean variable to false 
     } 
     } 

     public void onFinish() {} 
    }.start();