Question

我从启动器和系统的时间得到了时间...我想比较它们并确保差异不超过100毫秒

public void test() throws InterruptedException {
    /*
    * Get the visible time from the launcher
    */
    TextView onLauncherDisplay = (TextView) mNextUIMainActivity.findViewById(R.id.timeOfDay);
    System.out.println("Launcher time:  " + onLauncherDisplay.getText().toString());

    /*
    * Get the system time
    */
    Calendar currentSystemTime = Calendar.getInstance();
    currentSystemTime.setTime(new Date());

    Calendar currentSystemTImeInMIlliseconds = Calendar.getInstance();
    currentSystemTImeInMIlliseconds.seu
    /*
    * Convert time into 12-hour format
    */
    SimpleDateFormat date = new SimpleDateFormat("h:mm aa");

    Calendar onLauncherTime = Calendar.getInstance();
    try {
        onLauncherTime.setTime(date.parse(onLauncherDisplay.getText().toString()));
    } catch (ParseException e) {
        e.printStackTrace();
    }

    System.out.println("System time:  " + currentSystemTime.get(Calendar.HOUR) + ":" + currentSystemTime.get(Calendar.MINUTE));

我在这里比较时间......小时和分钟，但这并不完美。我想转换成毫秒，差异不应超过100毫秒

/*
* Compare the Launcher time with the System time
*/
if ((onLauncherTime.get(Calendar.HOUR) == currentSystemTime.get(Calendar.HOUR)) || (currentSystemTime.get(Calendar.HOUR) - onLauncherTime.get(Calendar.HOUR) == 1)) {
    if (onLauncherTime.get(Calendar.MINUTE) == currentSystemTime.get(Calendar.MINUTE) || (currentSystemTime.get(Calendar.MINUTE) - onLauncherTime.get(Calendar.MINUTE) == 1)) {
        System.out.println("Launcher time matches the On-System time!");
    }
} else {
    System.out.println("Launcher time does not matches the On-System time!!");
}

Answer 1

Calendar类有一个method getTimeInMillis，它返回给定日历的unix纪元时间值。那就是说，我不完全明白你在做什么......

Answer 2

使用Calendar.getTimeInMillis()：

if (currentSystemTime.getTimeInMillis() - onLauncherTime.getTimeInMillis() < 100)
   //difference is less than 100 milliseconds

将时间转换为毫秒

2 个答案: