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  • NSCalendar NSDateComponents

     

        // NSCalendar

        

        // 获取当前日历

        NSCalendar *calendar = [NSCalendar currentCalendar];

        

        // 获取当前时间日期的各个值

        NSDate *currentDate = [NSDate date];

        

        NSUInteger unitFlag = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour |NSCalendarUnitMinute|NSCalendarUnitSecond;

        NSDateComponents *com = [calendar components:unitFlag fromDate:currentDate];

        

        NSLog(@"year = %i, month = %i, day = %i, hour = %i, minuts=%i, seconds = %i", com.year, com.month, com.day, com.hour, com.minute, com.second);

        

        // 通过各个值获取NSDate

        NSCalendar *calendar1 = [NSCalendar autoupdatingCurrentCalendar];

        NSDateComponents *settingComs = [[NSDateComponents alloc]init];

        settingComs.year = 2014;

        settingComs.month = 6;

        settingComs.day = 1;

        settingComs.hour = 11;

        settingComs.minute = 30;

        settingComs.second = 0;

        NSDate *settingDate = [calendar1 dateFromComponents:settingComs];

        NSLog(@"settingDate is : %@", settingDate);

        

        

        // 计算时间差

        NSCalendar *diffCalendar = [NSCalendar currentCalendar];

        NSString *str1 = @"2016-07-07 20:20:20";

        NSString *str2 = @"2016-07-01 10:10:10";

        

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

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

        

        NSDate *date1 = [dateFormatter dateFromString:str1];

        NSDate *date2 = [dateFormatter dateFromString:str2];

        

        NSUInteger diffCalendarUnitFlag = NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitSecond;

        NSDateComponents *diffComs = [diffCalendar components:diffCalendarUnitFlag fromDate:date1 toDate:date2 options:0];

        NSLog(@"year = %i, month = %i, day = %i, hour = %i, minuts=%i, seconds = %i", diffComs.year, diffComs.month, diffComs.day, diffComs.hour, diffComs.minute, diffComs.second);

        

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  • 原文地址:https://www.cnblogs.com/xiangjune/p/5651517.html
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