android - 将时间转换为毫秒

Question

我想检查设置时间是否小于日历（移动设备）时间。
它显示设置的警报，如果设置时间不超过 1.5 小时，它会显示“ruko ruko”消息。如果两个条件都为假，那么它将进入其他条件。
它没有给我预期的结果。这是我的代码：

 GregorianCalendar mcalender=new GregorianCalendar();
mcalender.set(2013, 7, 17, 13, 0);

if(mcalender.getTimeInMillis()<=cal.getTimeInMillis()){
    Toast.makeText(getBaseContext(), "sets ", Toast.LENGTH_SHORT).show();
}
else if(mcalender.getTimeInMillis()+5400000<=cal.getTimeInMillis()){
    Toast.makeText(mContext, "ruko ruko", Toast.LENGTH_SHORT).show();
}
else{
    Toast.makeText(getBaseContext(), "Time not gone ", Toast.LENGTH_SHORT).show();
}

Answer 1

问题是首先检查 mcalender.getTimeInMillis()。例如，当您将闹钟设置为 5:30 时，在 4:30 时，第一部分已经为真，因此完全跳过 else if 部分。只需颠倒顺序就可以了:)

    if(mcalender.getTimeInMillis()+5400000<=cal.getTimeInMillis()){
        //If still have more than 1.5 hours to go (i.e. 2 hours left etc)
        Toast.makeText(mContext, "ruko ruko", Toast.LENGTH_SHORT).show();
    }
    else if(mcalender.getTimeInMillis()<=cal.getTimeInMillis()){
        //Not more than 1.5 hours, but still not time up yet.
        Toast.makeText(getBaseContext(), "sets ", Toast.LENGTH_SHORT).show();
    }
    else{
        //Time is up. Run action.
        Toast.makeText(getBaseContext(), "Time not gone ", Toast.LENGTH_SHORT).show();
    }