Question

我想通过使用系统当前在我的Android应用程序中显示特定时间的倒计时。提前致谢。我需要设置一个倒数计时器，该计时器应该告诉我们需要多长时间才能确定时间＆＃34;这段代码中的12:30。

// start time
        String string13 = date + " 06:30:00";  
        Date time13 = new SimpleDateFormat("MM-dd-yy HH:mm:ss").parse(string13);
        Calendar calendar13 = Calendar.getInstance();
        calendar13.setTime(time13);

        // end time
        String string14 = date + " 13:30:00";  
        Date time14 = new SimpleDateFormat("MM-dd-yy HH:mm:ss").parse(string14);
        Calendar calendar14 = Calendar.getInstance();
        calendar14.setTime(time14);

        // exact time
        String string15 = date + " 12:30:00";
        Date Z = new SimpleDateFormat("MM-dd-yy HH:mm:ss").parse(string15);
        Calendar c15 = Calendar.getInstance();
        c15.setTime(Z);

Answer 1

将以下代码用于您的目标。

startB = (Button) this.findViewById(R.id.button1);
startB.setOnClickListener((OnClickListener) this);
text = (TextView) findViewById(R.id.textView1);


@Override
public void onClick(View v) {
    new CountDownTimer(30000, 1000) { // adjust the milli seconds here

        public void onTick(long millisUntilFinished) {
        text.setText(""+String.format("%d min, %d sec", 
                    TimeUnit.MILLISECONDS.toMinutes( millisUntilFinished),
                    TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - 
                          TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
    }

    public void onFinish() {
       text.setText("done!");
    }
 }.start();

}

或尝试以下链接
http://steve.odyfamily.com/?p=12

android Eclipse：如何在android中设置倒计时器

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