「定時器吐司」顯示滯後那麼實際的「倒計時」

Question

我使用Toast內Countdown Timer顯示超時秒，但我覺得Toast顯示實際上是滯後，則實時秒，有沒有更好的方式來顯示信息妥善？

CountDownTimer timer = new CountDownTimer(20000, 1000) { 

    @Override 
    public void onTick(long millisUntilFinished) { 

     Toast.makeText(getApplicationContext(), "Disabling Task, Please wait : " + millisUntilFinished/1000, Toast.LENGTH_SHORT).show(); 
    } 

    @Override 
    public void onFinish() { 
     Toast.makeText(getApplicationContext(), "Congratulations!! Time out", Toast.LENGTH_SHORT).show(); 
    } 
}.start(); 

Answer 1

問題是吐司被添加到一個隊列中，並一個接一個地執行。您的剔號比Toast.LENGTH_SHORT更快，這會導致延遲。您希望持續參考先前的烤麪包，並在顯示新烤麪包之前將其取消。

Toast mToast = null; 

CountDownTimer timer = new CountDownTimer(20000, 1000) { 

    @Override 
    public void onTick(long millisUntilFinished) { 
     if (mToast != null) mToast.cancel(); 
     mToast = Toast.makeText(getApplicationContext(), "Disabling Task, Please wait : " + millisUntilFinished/1000, Toast.LENGTH_SHORT); 
     mToast.show(); 
    } 

    @Override 
    public void onFinish() { 
     if (mToast != null) mToast.cancel(); 
     mToast = Toast.makeText(getApplicationContext(), "Congratulations!! Time out", Toast.LENGTH_SHORT); 
     mToast.show(); 
    } 
}.start(); 

警告！這不適用於Android 2.3。