//獲取某月的第一天字符串
-(NSString *)getMonthFirstDayWithDate:(NSDate *)date format:(NSString *)aformat{
? ? NSDate * newDate = date;
? ? double interval = 0;
? ? NSDate * firstDate = nil;
? ? NSCalendar * calendar = [NSCalendar currentCalendar];
? ? BOOL bl = [calendar rangeOfUnit:NSCalendarUnitMonth startDate:&firstDate interval:&interval forDate:newDate];
? ? if(bl) {
? ? ? ? NSDateFormatter * myDateFormatter = [[NSDateFormatter alloc]init];
? ? ? ? [myDateFormatter setDateFormat:aformat];
? ? ? ? NSString * firstString = [myDateFormatter stringFromDate: firstDate];
? ? ? ? return firstString;
? ? }
? ? return @"";
}
//獲取某月的最后一天字符串
-(NSString *)getMonthLastDayWithDate:(NSDate *)date format:(NSString *)aformat{
? ? NSDate * newDate = date;
? ? double interval = 0;
? ? NSDate * firstDate = nil;
? ? NSDate * lastDate = nil;
? ? NSCalendar * calendar = [NSCalendar currentCalendar];
? ? BOOL bl = [calendar rangeOfUnit:NSCalendarUnitMonth startDate:&firstDate interval:&interval forDate:newDate];
? ? if(bl) {
? ? ? ? lastDate = [firstDate dateByAddingTimeInterval:interval -1];
? ? ? ? NSDateFormatter * myDateFormatter = [[NSDateFormatter alloc]init];
? ? ? ? [myDateFormatter setDateFormat:aformat];
? ? ? ? NSString * lastString = [myDateFormatter stringFromDate:lastDate];
? ? ? ? return lastString;
? ? }
? ? return @"";
}
//調用某月第一天方法
[self getMonthFirstDayWithDate:[NSDate date] format:@"yyyy-MM-dd"];
//調用某月最后一天方法
[self getMonthLastDayWithDate:[NSDate date] format:@"yyyy-MM-dd"];
