android - 如何显示1分钟的进度条？

Question

我在 android 中有一个水平进度条。我需要在 60 秒内完成。

为什么下面的代码不起作用？

int progress = 0;
progressBarHorizontal.setMax(60);
while(progress < 60) {
     progressHandler.postDelayed((new Runnable() {
        public void run() {                     
           progressBarHorizontal.setProgress(progress);                    
        }                   
     }),progress * 1000);
     progress++;
}

请推荐一些其他的方法。我试过这个:

new Thread(new Runnable() {
                int progress = 0;       
                public void run() {
                    long timerEnd = System.currentTimeMillis() + 60 * 1000;

                    while (timerEnd >  System.currentTimeMillis() ) {

                        progress = (int) (timerEnd - System.currentTimeMillis()) / 1000;
                        // Update the progress bar
                        progressHandler.post(new Runnable() {
                            public void run() {
                                progressBarHorizontal.setProgress(progress);
                            }
                        });                         
                        try {
                            Thread.sleep(500);
                        } catch (InterruptedException e) {
                            Log.w("tag","Progress thread cannot sleep");
                        }
                    }
                }
            }).start(); 

但它也不起作用。

第二段代码确实有效，问题出在我的逻辑上。

Answer 1

你可以试试 CountDownTimer :

pd = ProgressDialog.show(MovementEntry.this, "", "Please Wait...",
                true, false);
pd.show();
new CountDownTimer(60000, 1000) {
  @Override
  public void onTick(long millisUntilFinished) {
      //this will be done every 1000 milliseconds ( 1 seconds )
      int progress = (60000 - millisUntilFinished) / 1000;
      pd.setProgress(progress);
  }

   @Override
   public void onFinish() {
      //the progressBar will be invisible after 60 000 miliseconds ( 1 minute)
      pd.dismiss();
   }

}.start();