IOS NSDate 毫秒問題

之前遇到json 資料是毫秒時候,解法如以下範例.

例：
日期格式：/Date(1490779686507)/

 if (publishTimeBeg != [NSNull null]) {

        NSString *timestamp = [[publishTimeBeg 
componentsSeparatedByString:@"("][1] 
componentsSeparatedByString:@")"][0];

       

        NSDate *date = [NSDate dateWithTimeIntervalSince1970:[timestamp integerValue]/1000];

        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

        [dateFormatter setLocale:[[NSLocale alloc]initWithLocaleIdentifier:@"cn_TW"]];

        [dateFormatter setDateFormat:@"yyyy-MM-dd"];

        dateStr = [dateFormatter stringFromDate:date];

    }