使用网络时间进行租赁周期选择、送还货时间选择,避免当前时间和服务器时间不同步/一些用户恶搞,修改本地时间,造成无效订单,业务看起来不复杂,但处理起来还是稍微有点麻烦:
1.除了时间真实性和及时性的问题,还要注意上方加减周期和下方换货时间的联动问题,送货时间和换货时间切换后再改变上方加减周期的联动问题;
2.下面时间的获取、判定、比较代码只是其中的一部分,更多内容可以看我的Demo;
一起来看一下效果:
项目实战
技术点:
1.获取网络时间/服务器时间
//获取网络时间 + (void)getNetWorkDateSuccess:(void(^)(NSDate *networkDate, NSString *networkDateStr))success { NSString *urlString = @"https://www.baidu.com"; urlString = [urlString stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:[NSURL URLWithString: urlString]]; [request setCachePolicy:NSURLRequestReloadIgnoringCacheData]; [request setTimeoutInterval:5]; [request setHTTPShouldHandleCookies:FALSE]; [request setHTTPMethod:@"GET"]; __block NSDate *localDate; [NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) { if (!connectionError) { //要把网络数据强转 不然用不了下面那个方法获取不到内容(个人感觉,不知道对不) NSHTTPURLResponse *responsee = (NSHTTPURLResponse *)response; NSString *date = [[responsee allHeaderFields] objectForKey:@"Date"]; date = [date substringFromIndex:5]; date = [date substringToIndex:[date length]-4]; NSDateFormatter *dMatter = [[NSDateFormatter alloc] init]; dMatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]; [dMatter setDateFormat:@"dd MMM yyyy HH:mm:ss"]; //处理八小时问题-这里获取到的是标准时间 NSDate *netDate = [dMatter dateFromString:date]; NSTimeZone *zone = [NSTimeZone systemTimeZone]; NSInteger interval = [zone secondsFromGMTForDate:netDate]; NSLog(@"interval: %ld", interval); localDate = [netDate dateByAddingTimeInterval: interval]; NSLog(@"%@________1",localDate); NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"]; NSString *nowtimeStr = [NSString string]; nowtimeStr = [formatter stringFromDate:localDate]; NSLog(@"%@--------2",nowtimeStr); dispatch_async(dispatch_get_main_queue(), ^{ if (success) { success(localDate, nowtimeStr); } }); }else { dispatch_async(dispatch_get_main_queue(), ^{ [MBProgressHUD showError:@"网络异常, 请稍后重试"]; }); } }]; }
2.时间计算-增/减日期
//根据时间间隔计算新的时间 年-月-日 字符串格式(年-月-日) + (NSString *)updateDateWithDateStr:(NSString *)dateStr Interval:(NSTimeInterval)interval IsAdd:(BOOL)isAdd { NSTimeInterval endTime; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd"]; NSTimeInterval fromTime = [[formatter dateFromString:dateStr] timeIntervalSince1970]; if (isAdd) { endTime = fromTime + interval; }else { endTime = fromTime - interval; } //时间戳转时间 NSDate *endDate = [NSDate dateWithTimeIntervalSince1970:endTime]; NSDateFormatter *dateformatter=[[NSDateFormatter alloc] init]; [dateformatter setDateFormat:@"yyyy-MM-dd"]; NSString *endDateStr = [dateformatter stringFromDate:endDate]; return endDateStr; } //根据时间间隔计算新的时间 年-月-日 + (NSString *)updateDateWithDate:(NSDate *)date Interval:(NSTimeInterval)interval IsAdd:(BOOL)isAdd { NSTimeInterval endTime; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd"]; NSString *fromDateStr = [formatter stringFromDate:date]; NSTimeInterval fromTime = [[formatter dateFromString:fromDateStr] timeIntervalSince1970]; if (isAdd) { endTime = fromTime + interval; }else { endTime = fromTime - interval; } //时间戳转时间 NSDate *endDate = [NSDate dateWithTimeIntervalSince1970:endTime]; NSDateFormatter *dateformatter=[[NSDateFormatter alloc] init]; [dateformatter setDateFormat:@"yyyy-MM-dd"]; NSString *endDateStr = [dateformatter stringFromDate:endDate]; return endDateStr; } //根据时间间隔计算新的时间 年-月-日 时:分:秒 + (NSString *)updatePreciseDateWithDate:(NSDate *)date Interval:(NSTimeInterval)interval IsAdd:(BOOL)isAdd { NSTimeInterval endTime; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; NSString *fromDateStr = [formatter stringFromDate:date]; NSTimeInterval fromTime = [[formatter dateFromString:fromDateStr] timeIntervalSince1970]; if (isAdd) { endTime = fromTime + interval; }else { endTime = fromTime - interval; } //时间戳转时间 NSDate *endDate = [NSDate dateWithTimeIntervalSince1970:endTime]; NSDateFormatter *dateformatter=[[NSDateFormatter alloc] init]; [dateformatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; NSString *endDateStr = [dateformatter stringFromDate:endDate]; return endDateStr; }
3.时间间隔判断
#pragma mark - 判断当前时间是否在某一时间段 /** @param fromDate 开始时间 @“10:00” @param toDate 结束时间 @“15:00” @return 判断结果 */ - (BOOL)isOpenTimeWithFromDate:(NSString *)fromDate toDate:(NSString *)toDate { //获取当前时间 NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd"]; NSString *dateStr = [formatter stringFromDate:_networkDate]; //开始时间和结束时间 NSString *fromDateStr = [NSString stringWithFormat:@"%@ %@", dateStr, fromDate]; NSString *endDateStr = [NSString stringWithFormat:@"%@ %@", dateStr, toDate]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; NSTimeInterval fromTime = [[formatter dateFromString:fromDateStr] timeIntervalSince1970]; NSTimeInterval endTime = [[formatter dateFromString:endDateStr] timeIntervalSince1970]; NSTimeInterval currentTime = [_networkDate timeIntervalSince1970]; if (currentTime > fromTime && currentTime < endTime) { return YES; }else { return NO; } } #pragma mark - 判断当前时间是否处于某一时间之前 /** 判断当前时间是否处于某一时间之前 @param currentDate 当前时间 @param toDate 比较时间 @return 比较结果 */ - (BOOL)isGreaterThanWithCurrentDate:(NSDate *)currentDate ToDate:(NSString *)toDate { //获取当前时间 NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd"]; NSString *dateStr = [formatter stringFromDate:currentDate]; //开始时间和结束时间 NSString *toDateStr = [NSString stringWithFormat:@"%@ %@", dateStr, toDate]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; NSTimeInterval toTime = [[formatter dateFromString:toDateStr] timeIntervalSince1970]; NSTimeInterval currentTime = [currentDate timeIntervalSince1970]; if (currentTime > toTime) { return YES; }else { return NO; } }
作者:Metro追光者
链接:https://www.jianshu.com/p/854892659f75