// 分钟转 当日时分 格式00:00
public static String secToTime(int minute) {
    String returnStr = null;
    int hour = 0;
    if (minute <= 0)
        return "00:00";
    else {
        if (minute < 60) {
            returnStr = "00:"+timeFormat(time);
        } else {
            hour = minute / 60;
            if (hour >= 24)
                return "24:00";
            minute = minute % 60;
            returnStr = timeFormat(hour) +":"+ timeFormat(minute) ;
        }
    }
    return returnStr;
}

public static String timeFormat(int i) {
    String returnStr = null;
    if (i >= 0 && i < 10)
        returnStr = "0"+Integer.toString(i);
    else
        returnStr = "" + i;
    return returnStr;
}