iPhone: Adding a Done button within a pop up DatePicker frame

Question

I pop up a DatePicker with the following. Now I\'m trying to add a Done button at the top of the pop up frame.

-(IBAction) contactBDayDatePicker{

NSLog(@         


        

Answer 1

I customize Micah's class to support multiple orientation and ARC

DateTimePicker.h

    @interface DateTimePicker : UIView {
}

@property (nonatomic, assign, readonly) UIDatePicker *picker;

- (void) setMode: (UIDatePickerMode) mode;
- (void) addTargetForDoneButton: (id) target action: (SEL) action;

@end

DateTimePicker.m

#define MyDateTimePickerToolbarHeight 40

@interface DateTimePicker()

@property (nonatomic, assign, readwrite) UIDatePicker *picker;

@property (nonatomic, assign) id doneTarget;
@property (nonatomic, assign) SEL doneSelector;

- (void) donePressed;

@end


@implementation DateTimePicker

@synthesize picker = _picker;

@synthesize doneTarget = _doneTarget;
@synthesize doneSelector = _doneSelector;

- (id) initWithFrame: (CGRect) frame {
    if ((self = [super initWithFrame: frame])) {
        self.backgroundColor = [UIColor clearColor];

        UIDatePicker *picker = [[UIDatePicker alloc] initWithFrame: CGRectMake(0, MyDateTimePickerToolbarHeight, frame.size.width, frame.size.height - MyDateTimePickerToolbarHeight)];
        [self addSubview: picker];

        UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame: CGRectMake(0, 0, frame.size.width, MyDateTimePickerToolbarHeight)];
        toolbar.barStyle = UIBarStyleBlackOpaque;
        toolbar.autoresizingMask = UIViewAutoresizingFlexibleWidth;

        UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle: @"Done" style: UIBarButtonItemStyleBordered target: self action: @selector(donePressed)];
        UIBarButtonItem* flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
        toolbar.items = [NSArray arrayWithObjects:flexibleSpace, doneButton, nil];

        [self addSubview: toolbar];

        self.picker = picker;
        picker.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;

        self.autoresizesSubviews = YES;
        self.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin;
    }
    return self;
}

- (void) setMode: (UIDatePickerMode) mode {
    self.picker.datePickerMode = mode;
}

- (void) donePressed {
    if (self.doneTarget) {
        [self.doneTarget performSelector:self.doneSelector withObject:nil afterDelay:0];
    }
}

- (void) addTargetForDoneButton: (id) target action: (SEL) action {
    self.doneTarget = target;
    self.doneSelector = action;
}

Using custom view in your view controller:

NSDate *selectedDate;  
UIButton *button;

- (void)viewDidLoad
{
    [super viewDidLoad];
    selectedDate = [NSDate new];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    dateFormatter.dateFormat = @"MM/dd/yyyy";

    button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self
               action:@selector(buttonPressed:)
     forControlEvents:UIControlEventTouchDown];
    [button setTitle:[dateFormatter stringFromDate:selectedDate] forState:UIControlStateNormal];
    button.frame = CGRectMake(100, 50, 100, 40.0);
    [self.view addSubview:button];

    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = screenRect.size.height;
    picker = [[DateTimePicker alloc] initWithFrame:CGRectMake(0, screenHeight/2 - 35, screenWidth, screenHeight/2 + 35)];
    [picker addTargetForDoneButton:self action:@selector(donePressed)];
    [self.view addSubview:picker];
    picker.hidden = YES;
    [picker setMode:UIDatePickerModeDate];
    [picker addTarget:self action:@selector(pickerChanged) forControlEvents:UIControlEventValueChanged];
}

-(void)pickerChanged {  
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    dateFormatter.dateFormat = @"MM/dd/yyyy";

    selectedDate = picker.date;
    [button setTitle:[dateFormatter stringFromDate:selectedDate] forState:UIControlStateNormal];
}    

-(void)donePressed {
    picker.hidden = YES;
}

-(void)buttonPressed:(id)sender {
    picker.hidden = NO;
    [picker setDate:selectedDate]; 
}