如何在Action Sheet中添加日期选择器？

Question

- (IBAction) showCatPicker {

    if (self.catList !=nil) {
        self.catList=nil;
        [catList release];
    }
    self.catList =  [[NSMutableArray alloc] init];

        self.actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];   
    [self.actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

    CGRect pickerFrame = CGRectMake(0, 40, 0, 0);   
    if(self.catPicker == nil) {     
        self.catPicker = [[UIPickerView alloc] initWithFrame:pickerFrame];

        self.catPicker.showsSelectionIndicator = YES;
        self.catPicker.dataSource = self;
        self.catPicker.opaque = YES;
        self.catPicker.multipleTouchEnabled = YES;
        self.catPicker.userInteractionEnabled = YES;
        self.catPicker.delegate = self;     
    }

    [self.actionSheet addSubview:self.catPicker];

    UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Select"]];
    closeButton.momentary = YES; 
    closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
    closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
    closeButton.tintColor = [UIColor colorWithRed:19.0/255 green:122.0/255 blue:53.0/255 alpha:1.0];
    [closeButton addTarget:self action:@selector(dismissGenderPicker:) forControlEvents:UIControlEventValueChanged];

    UISegmentedControl *cancelButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Cancel"]];
    cancelButton.momentary = YES; 
    cancelButton.frame = CGRectMake(10, 7.0f, 50.0f, 30.0f);
    cancelButton.segmentedControlStyle = UISegmentedControlStyleBar;
    cancelButton.tintColor = [UIColor colorWithRed:19.0/255 green:122.0/255 blue:53.0/255 alpha:1.0];
    [cancelButton addTarget:self action:@selector(cancelActionSheet) forControlEvents:UIControlEventValueChanged];

    [self.actionSheet addSubview:cancelButton]; 
    [self.actionSheet addSubview:closeButton];

    [cancelButton release]; 
    [closeButton release];  
    [self.actionSheet showInView:self.view];    
    [self.actionSheet setBounds:CGRectMake(0, 0, 320, 485)];
    [catPicker reloadComponent:0];
}

Answer 1

    self.view.userInteractionEnabled = NO;
    self.blurView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    [self.blurView setBackgroundColor:[UIColor lightGrayColor]];
    [self.blurView setAlpha:0.3];
    [[[UIApplication sharedApplication] delegate].window addSubview:self.blurView];

    CGRect pickerFrame = CGRectMake(0, 40, 0, 0);
    UIDatePicker *pickerView = [[UIDatePicker alloc] initWithFrame:pickerFrame];
    pickerView.datePickerMode = UIDatePickerModeDate;
    [pickerView setBackgroundColor:[UIColor whiteColor]];
    [pickerView addTarget:self action:@selector(pickerChanged:) forControlEvents:UIControlEventValueChanged];

    __block CGRect frame = CGRectMake(0, [[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width, 220);
    self.viewForPicker = [[UIView alloc] initWithFrame:frame];
    [self.viewForPicker setBackgroundColor:[UIColor whiteColor]];
    [self.viewForPicker addSubview:pickerView];
    [[[[UIApplication sharedApplication] delegate] window] addSubview:self.viewForPicker];

    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
    [button setTitle:@"Done" forState:UIControlStateNormal];
    [button addTarget:self action:@selector(doneButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [button setFrame:CGRectMake(250, 15, 60, 30)];
    [button.layer setCornerRadius:5.0];
    [button.layer setBorderWidth:1.0];
    [button.layer setBorderColor:[[IMAppStyle appColor] CGColor]];
    [self.viewForPicker addSubview:button];
    [self.viewForPicker.layer setCornerRadius:8.0];

    float animationDuration = 0.25;
    [UIView animateWithDuration:animationDuration animations:^{
        frame.origin.y -= (180+40+35);
        [self.viewForPicker setFrame:frame];
    }];