322 lines
10 KiB
Objective-C
322 lines
10 KiB
Objective-C
//
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// NSDate+BRPickerView.m
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// BRPickerViewDemo
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//
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// Created by renbo on 2018/3/15.
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// Copyright © 2018 irenb. All rights reserved.
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//
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// 最新代码下载地址：https://github.com/91renb/BRPickerView
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#import "NSDate+BRPickerView.h"
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#import "BRPickerViewMacro.h"
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BRSYNTH_DUMMY_CLASS(NSDate_BRPickerView)
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static const NSCalendarUnit unitFlags = (NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitWeekOfMonth | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond | NSCalendarUnitWeekday | NSCalendarUnitWeekdayOrdinal);
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@implementation NSDate (BRPickerView)
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#pragma mark - 获取日历单例对象
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+ (NSCalendar *)br_calendar {
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static NSCalendar *sharedCalendar = nil;
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if (!sharedCalendar) {
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// 创建日历对象，指定日历的算法（公历/阳历）
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sharedCalendar = [[NSCalendar alloc]initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
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// NSCalendar 设置时区
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//sharedCalendar.timeZone = [NSTimeZone timeZoneWithName:@"America/Chicago"];
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}
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return sharedCalendar;
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}
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#pragma mark - NSDate 转 NSDateComponents
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+ (NSDateComponents *)br_componentsFromDate:(NSDate *)date {
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// 通过日历类 NSCalendar 进行转换
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NSCalendar *calendar = [self br_calendar];
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// NSDateComponents 可以获得日期的详细信息，即日期的组成
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return [calendar components:unitFlags fromDate:date];
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}
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#pragma mark - NSDateComponents 转 NSDate
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+ (NSDate *)br_dateFromComponents:(NSDateComponents *)components {
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// 通过日历类 NSCalendar 进行转换
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NSCalendar *calendar = [self br_calendar];
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return [calendar dateFromComponents:components];
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}
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#pragma mark - 获取指定日期的年份
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- (NSInteger)br_year {
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return [NSDate br_componentsFromDate:self].year;
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}
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#pragma mark - 获取指定日期的月份
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- (NSInteger)br_month {
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return [NSDate br_componentsFromDate:self].month;
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}
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#pragma mark - 获取指定日期的天
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- (NSInteger)br_day {
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return [NSDate br_componentsFromDate:self].day;
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}
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#pragma mark - 获取指定日期的小时
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- (NSInteger)br_hour {
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return [NSDate br_componentsFromDate:self].hour;
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}
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#pragma mark - 获取指定日期的分钟
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- (NSInteger)br_minute {
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return [NSDate br_componentsFromDate:self].minute;
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}
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#pragma mark - 获取指定日期的秒
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- (NSInteger)br_second {
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return [NSDate br_componentsFromDate:self].second;
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}
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#pragma mark - 获取指定日期的星期
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- (NSInteger)br_weekday {
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return [NSDate br_componentsFromDate:self].weekday;
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}
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#pragma mark - 获取指定日期的星期
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- (NSString *)br_weekdayString {
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switch (self.br_weekday - 1) {
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case 0:
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{
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return @"周日";
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}
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break;
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case 1:
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{
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return @"周一";
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}
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break;
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case 2:
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{
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return @"周二";
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}
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break;
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case 3:
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{
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return @"周三";
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}
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break;
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case 4:
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{
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return @"周四";
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}
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break;
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case 5:
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{
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return @"周五";
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}
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break;
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case 6:
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{
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return @"周六";
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}
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break;
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default:
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break;
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}
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return @"";
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}
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/// ---------------- 创建 date ----------------
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#pragma mark - 通过 NSDateComponents对象 来创建 NSDate对象（可以设置时区）
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+ (nullable NSDate *)br_setDateFromComponents:(NSDateComponents *)components timeZone:(NSTimeZone *)timeZone {
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// 创建日历对象，指定日历的算法（公历/阳历）
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NSCalendar *calendar = [[NSCalendar alloc]initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
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if (timeZone) {
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// NSCalendar 设置时区
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calendar.timeZone = timeZone;
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}
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return [calendar dateFromComponents:components];
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}
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#pragma mark - 创建date（通过 NSCalendar 类来创建日期）
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+ (NSDate *)br_setYear:(NSInteger)year month:(NSInteger)month day:(NSInteger)day hour:(NSInteger)hour minute:(NSInteger)minute second:(NSInteger)second {
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NSDateComponents *components = [self br_componentsFromDate:[NSDate date]];
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if (year > 0) {
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// 初始化日期组件
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components = [[NSDateComponents alloc]init];
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components.year = year;
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}
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if (month > 0) {
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components.month = month;
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}
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if (day > 0) {
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components.day = day;
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}
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if (hour >= 0) {
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components.hour = hour;
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}
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if (minute >= 0) {
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components.minute = minute;
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}
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if (second >= 0) {
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components.second = second;
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}
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return [self br_dateFromComponents:components];
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}
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+ (NSDate *)br_setYear:(NSInteger)year month:(NSInteger)month day:(NSInteger)day hour:(NSInteger)hour minute:(NSInteger)minute {
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return [self br_setYear:year month:month day:day hour:hour minute:minute second:0];
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}
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+ (NSDate *)br_setYear:(NSInteger)year month:(NSInteger)month day:(NSInteger)day hour:(NSInteger)hour {
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return [self br_setYear:year month:month day:day hour:hour minute:0 second:0];
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}
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+ (NSDate *)br_setYear:(NSInteger)year month:(NSInteger)month day:(NSInteger)day {
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return [self br_setYear:year month:month day:day hour:0 minute:0 second:0];
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}
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+ (NSDate *)br_setYear:(NSInteger)year month:(NSInteger)month {
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return [self br_setYear:year month:month day:0 hour:0 minute:0 second:0];
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}
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+ (NSDate *)br_setYear:(NSInteger)year {
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return [self br_setYear:year month:0 day:0 hour:0 minute:0 second:0];
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}
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+ (NSDate *)br_setMonth:(NSInteger)month day:(NSInteger)day hour:(NSInteger)hour minute:(NSInteger)minute {
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return [self br_setYear:0 month:month day:day hour:hour minute:minute second:0];
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}
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+ (NSDate *)br_setMonth:(NSInteger)month day:(NSInteger)day {
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return [self br_setYear:0 month:month day:day hour:0 minute:0 second:0];
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}
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+ (NSDate *)br_setHour:(NSInteger)hour minute:(NSInteger)minute second:(NSInteger)second {
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return [self br_setYear:0 month:0 day:0 hour:hour minute:minute second:second];
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}
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+ (NSDate *)br_setHour:(NSInteger)hour minute:(NSInteger)minute {
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return [self br_setYear:0 month:0 day:0 hour:hour minute:minute second:0];
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}
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+ (NSDate *)br_setMinute:(NSInteger)minute second:(NSInteger)second {
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return [self br_setYear:0 month:0 day:0 hour:0 minute:minute second:second];
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}
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#pragma mark - 获取某个月的天数（通过年月求每月天数）
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+ (NSUInteger)br_getDaysInYear:(NSInteger)year month:(NSInteger)month {
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BOOL isLeapYear = year % 4 == 0 ? (year % 100 == 0 ? (year % 400 == 0 ? YES : NO) : YES) : NO;
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switch (month) {
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case 1:
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case 3:
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case 5:
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case 7:
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case 8:
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case 10:
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case 12:
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{
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return 31;
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}
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case 4:
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case 6:
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case 9:
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case 11:
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{
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return 30;
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}
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case 2:
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{
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if (isLeapYear) {
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return 29;
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} else {
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return 28;
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}
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}
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default:
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break;
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}
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return 0;
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}
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#pragma mark - 获取 日期加上/减去某天数后的新日期
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- (NSDate *)br_getNewDateToDays:(NSTimeInterval)days {
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// days 为正数时，表示几天之后的日期；负数表示几天之前的日期
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return [self dateByAddingTimeInterval:60 * 60 * 24 * days];
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}
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#pragma mark - NSDate 转 NSString
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+ (NSString *)br_stringFromDate:(NSDate *)date dateFormat:(NSString *)dateFormat {
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return [self br_stringFromDate:date dateFormat:dateFormat timeZone:nil language:nil];
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}
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#pragma mark - NSDate 转 NSString
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+ (NSString *)br_stringFromDate:(NSDate *)date
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dateFormat:(NSString *)dateFormat
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timeZone:(NSTimeZone *)timeZone
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language:(NSString *)language {
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NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
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// 设置日期格式
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dateFormatter.dateFormat = dateFormat;
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// NSDateFormatter 设置时区 ，不设置默认为系统时区
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if (timeZone) {
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dateFormatter.timeZone = timeZone;
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}
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if (!language) {
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language = [NSLocale preferredLanguages].firstObject;
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}
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dateFormatter.locale = [[NSLocale alloc]initWithLocaleIdentifier:language];
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NSString *dateString = [dateFormatter stringFromDate:date];
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return dateString;
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}
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#pragma mark - NSString 转 NSDate
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+ (NSDate *)br_dateFromString:(NSString *)dateString dateFormat:(NSString *)dateFormat {
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return [self br_dateFromString:dateString dateFormat:dateFormat timeZone:nil language:nil];
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}
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#pragma mark - NSString 转 NSDate
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+ (NSDate *)br_dateFromString:(NSString *)dateString
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dateFormat:(NSString *)dateFormat
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timeZone:(NSTimeZone *)timeZone
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language:(NSString *)language {
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NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
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// 设置日期格式
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dateFormatter.dateFormat = dateFormat;
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// 设置时区
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if (!timeZone) {
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timeZone = [self currentTimeZone];
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}
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if (!language) {
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language = [NSLocale preferredLanguages].firstObject;
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}
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dateFormatter.timeZone = timeZone;
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dateFormatter.locale = [[NSLocale alloc]initWithLocaleIdentifier:language];
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// 如果当前时间不存在，就获取距离最近的整点时间
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dateFormatter.lenient = YES;
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return [dateFormatter dateFromString:dateString];
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}
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#pragma mark - 获取当前时区(不使用夏时制)
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+ (NSTimeZone *)currentTimeZone {
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// 当前时区
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NSTimeZone *localTimeZone = [NSTimeZone localTimeZone];
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// 当前时区相对于GMT(零时区)的偏移秒数
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NSInteger interval = [localTimeZone secondsFromGMTForDate:[NSDate date]];
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// 当前时区(不使用夏时制)：由偏移量获得对应的NSTimeZone对象
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// 注意：一些夏令时时间 NSString 转 NSDate 时，默认会导致 NSDateFormatter 格式化失败，返回 null
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return [NSTimeZone timeZoneForSecondsFromGMT:interval];
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}
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#pragma mark - NSDate 转 NSString（已弃用）
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+ (NSString *)br_getDateString:(NSDate *)date format:(NSString *)format {
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return [self br_stringFromDate:date dateFormat:format];
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}
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#pragma mark - NSString 转 NSDate（已弃用）
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+ (NSDate *)br_getDate:(NSString *)dateString format:(NSString *)format {
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return [self br_dateFromString:dateString dateFormat:format];
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}
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@end
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