动态时间工具类

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// 转为 n秒前 n分钟前 n小时前日期

public static String dataLongToSNS(long time,String format){

long now = System.currentTimeMillis();

long diff = now -time;

diff = diff/1000;// 秒

if(diff<0){

return dateLongToString(time,format);

}

if(diff<30){ // 30秒

return "刚刚";

}

if(diff<60){

return String.format("%s秒前", diff);

}

if(diff<3600){

return String.format("%s分钟前", diff/60);

}

//获取今天凌晨时间

long todayStart = DateUtils.getTodayStartTime();

if(time>=todayStart){// 今天

return String.format("%s小时前", diff/3600);

}

if(time<todayStart && time >= todayStart-86400000){

return "昨天 " + dateLongToString(time, "HH:mm");

}

return dateLongToString(time,format);

}

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