UIDatePicker odd behavior when setting minuteInterval
http://stackoverflow.com/questions/6948297/uidatepicker-odd-behavior-when-setting-minuteinterval
Here's yet another approach, with an Objective-C category!
I took the spirit of @zurbergram's rounding behavior (up/down to closest) and @mmorris's overall answer and came up with this category:
#import <UIKit/UIKit.h>
@interface UIDatePicker (SetDateRounded)
-(void)setMinimumDateRoundedByMinuteInterval:(NSDate *)minimumDate;
-(void)setDateRoundedByMinuteInterval:(NSDate *)date animated:(BOOL)animatedYesNo;
@end
@implementation UIDatePicker (SetDateRounded)
-(void)setDateRoundedByMinuteInterval:(NSDate *)date animated:(BOOL)animatedYesNo
{
NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components:NSMinuteCalendarUnit fromDate:date];
NSInteger minutes = [dateComponents minute];
NSInteger minutesRounded = roundf((float)minutes / (float)[self minuteInterval]) * self.minuteInterval;
NSDate *roundedDate = [[NSDate alloc] initWithTimeInterval:60.0 * (minutesRounded - minutes) sinceDate:date];
[self setDate:roundedDate animated:animatedYesNo];
}
-(void)setMinimumDateRoundedByMinuteInterval:(NSDate *)date
{
NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components:NSMinuteCalendarUnit fromDate:date];
NSInteger minutes = [dateComponents minute];
NSInteger minutesRounded = roundf((float)minutes / (float)[self minuteInterval]) * self.minuteInterval;
NSDate *roundedDate = [[NSDate alloc] initWithTimeInterval:60.0 * (minutesRounded - minutes) sinceDate:date];
[self setMinimumDate:roundedDate];
}
@end
Then in your implementation, you can do something like this:
#import "UIDatePicker+SetDateRounded.h"
...
- (void)viewDidLoad
{
[super viewDidLoad];
_datePicker.minuteInterval = 15;
[_datePicker setMinimumDateRoundedByMinuteInterval:[NSDate date]];
[_datePicker setDateRoundedByMinuteInterval:[NSDate date] animated:YES];
}
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