//获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 @"";
}
//获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 @"";
}
//调用某月第一天方法
[self getMonthFirstDayWithDate:[NSDate date] format:@"yyyy-MM-dd"];
//调用某月最后一天方法
[self getMonthLastDayWithDate:[NSDate date] format:@"yyyy-MM-dd"];
