Question

所以，当我在用户点击UITextField时，我遵循了一个关于如何获取UIDatePicker而不是键盘的教程。我得到的问题是，当选择器出现时，它被剪切并在控制台中显示此消息：

Presenting action sheet clipped by its superview. Some controls might not respond to touches. On iPhone try -[UIActionSheet showFromTabBar:] or -[UIActionSheet showFromToolbar:] instead of -[UIActionSheet showInView:].

我尝试了其他方法，但它们也没有用，我也没想到它们。如果有人可以看看下面的代码并提供一些建议，那就太好了。谢谢:)）

AddShiftViewController.h

#import <UIKit/UIKit.h>
#import "AppDelegate.h"
#import "Shift.h"

@interface AddShiftsViewController : UIViewController <UITextFieldDelegate>

@property (weak, nonatomic) IBOutlet UITextField *jobTitleField;
@property (weak, nonatomic) IBOutlet UITextField *startDateField;
@property (weak, nonatomic) IBOutlet UITextField *endDateField;

@property (nonatomic, strong) NSDate *startDate;
@property (nonatomic, strong) NSDate *endDate;

@property (nonatomic, strong) UIActionSheet *dateSheet;

- (void)setDate;
- (void)dismissPicker;
- (void)cancelPicker;

- (IBAction)addShift:(id)sender;

@end

AddShiftViewController.m

#import "AddShiftsViewController.h"

@interface AddShiftsViewController ()

@end

@implementation AddShiftsViewController
@synthesize jobTitleField;
@synthesize startDateField;
@synthesize endDateField;
@synthesize startDate, endDate, dateSheet;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    AppDelegate *dataCenter = (AppDelegate *)[[UIApplication sharedApplication] delegate];
}

- (void)viewDidUnload
{
    [self setJobTitleField:nil];
    [self setStartDateField:nil];
    [self setEndDateField:nil];
    [self setEndDate:nil];
    [self setStartDate:nil];
    [self setDateSheet:nil];
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (IBAction)addShift:(id)sender {
    Shift *newShift = [[Shift alloc] init];
}

- (void)setDate {
    dateSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];

    [dateSheet setActionSheetStyle:UIActionSheetStyleDefault];

    CGRect pickerFrame = CGRectMake(0, 44, 0, 0);
    UIDatePicker *picker = [[UIDatePicker alloc] initWithFrame:pickerFrame];
    [picker setDatePickerMode:UIDatePickerModeDateAndTime];

    [dateSheet addSubview:picker];

    UIToolbar *controlToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, dateSheet.bounds.size.width, 44)];

    [controlToolBar setBarStyle:UIBarStyleDefault];
    [controlToolBar sizeToFit];

    UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

    UIBarButtonItem *setButton = [[UIBarButtonItem alloc] initWithTitle:@"Set" style:UIBarButtonItemStyleDone target:self action:@selector(dismissPicker)];

    UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancelPicker)];

    [controlToolBar setItems:[NSArray arrayWithObjects:spacer, cancelButton, setButton, nil] animated:NO];

    [dateSheet addSubview:controlToolBar];

    [dateSheet showInView:self.view];

    [dateSheet setBounds:CGRectMake(0, 0, 420, 385)];
}

- (void)dismissPicker {
    NSArray *listOfViews = [dateSheet subviews];
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"MMMM d, yyyy at H:mm"];

    for (UIView *subView in listOfViews) {
        if ([subView isKindOfClass:[UIDatePicker class]]) {
            if (self.startDateField.isEditing) {
                self.startDate = [(UIDatePicker *)subView date];
                [self.startDateField setText:[formatter stringFromDate:self.startDate]];
                [dateSheet dismissWithClickedButtonIndex:0 animated:YES];
            }
            else if (self.endDateField.isEditing) {
                self.endDate = [(UIDatePicker *)subView date];
                [self.endDateField setText:[formatter stringFromDate:self.endDate]];
                [dateSheet dismissWithClickedButtonIndex:0 animated:YES];
            }
        }
    }
}

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
    [self setDate];
    return NO;
}

- (void)cancelPicker {
    [dateSheet dismissWithClickedButtonIndex:0 animated:YES];
}

@end

Shifts.h（自定义类）

#import <Foundation/Foundation.h>

@interface Shift : NSObject

@property (nonatomic, strong) NSString *jobTitle;
@property (nonatomic, strong) NSString *employer;
@property (nonatomic, strong) NSDate *startDate;
@property (nonatomic, strong) NSDate *endDate;

@end

修改

所以，我尝试切换到：

[dateSheet showFromTabBar:self.tabBarController.tabBar];

但它仍然是裁剪。我附上了一张图片，告诉你到底发生了什么。

enter image description here

Answer 1

看起来你可能已经在这条线上得到了一些数字：

[dateSheet setBounds:CGRectMake(0, 0, 420, 385)];

应该是：

[dateSheet setBounds:CGRectMake(0, 0, 320, 485)];

iPhone屏幕的宽度不是420像素:)经典屏幕在Retina显示屏上为320宽（纵向）或640宽。虽然在其他地方也可能存在错误，但这一点对我来说很突出。

Answer 2

首先，你确定框架宽度和高度是否正确。

CGRect pickerFrame = CGRectMake(0, 44, 0, 0); // (params) x , y, width, height

使用此框架的Picker View具有0宽度和0高度，因此无法正确显示。尝试使用一些宽度或高度创建UIDatePicker。

另外，您是否尝试使用控制器显示UIActionSheet，该控制器是UITabBarController的一部分... ??? 如果是，那么而不是

[datesheet showInView:self.view];

使用

[datesheet showFromTabBar:self.tabBarController.tabBar];

showInView导致剪辑

2 个答案: