func getStatusTime(dateStr: String) -> String {

    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
    let date = dateFormatter.dateFromString(dateStr)!

    //判断是否是同一年
    if isSameYear(date) {

        let calendar = NSCalendar.currentCalendar()

        if calendar.isDateInToday(date) {


            let time = abs(Int32(date.timeIntervalSinceNow))

            if time < 60 {

                return "刚刚"
            }else if time < 60 * 60 {

                return "\(time/60) 分钟前"
            }else{

                return "\(time / 60 / 60)小时前"
            }

        }else if calendar.isDateInYesterday(date) {

            dateFormatter.dateFormat = "HH:mm"
            return "昨天" + dateFormatter.stringFromDate(date)

        }else {

            dateFormatter.dateFormat = "MM-dd HH:mm"
            return dateFormatter.stringFromDate(date)
        }

    }else {

        dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
        return dateFormatter.stringFromDate(date)
    }
}

func isSameYear(date: NSDate) -> Bool{

    dateFormatter.dateFormat = "yyyy"

    return dateFormatter.stringFromDate(date) == dateFormatter.stringFromDate(NSDate())

}