iPad框架上的UIActionSheet太小 [英] UIActionSheet on iPad frame too small

问题描述

我试图在iPad上显示 UIActionSheet ，其中包含 UIPickerView ，我有等效代码工作在iPhone，所以我的 UIPickerView 委托和数据源的东西工作，但在iPad上，当我使用 - [UIActionSheet showFromRect：inView：animated： code>结果 UIPopover / UIActionSheet 太小了，我似乎无法设置框架大小，也没有显示任何按钮。

I am trying to display a UIActionSheet on the iPad with a UIPickerView in it, I have the equivalent code working for iPhone so my UIPickerView delegate and datasource stuff work, but on the iPad when I use -[UIActionSheet showFromRect:inView:animated:] the result UIPopover/UIActionSheet is way too small and I can not seem to set the frame size, also none of the buttons are displayed.

我不知道这是因为他们在界限之外还是有其他事情发生。这是我的代码看起来像我已删除所有非基本代码（iPhone等）。是否有人知道我在做什么错误，任何人都知道任何例子。

I don't know if this is because they are outside the bounds or there is something else going on. This is what my code looks like after I have removed all non-essential code (iPhone etc). Does anybody know what I am doing wrong, does anybody know of any examples.

CGRect thePickerFrame = CGRectMake(0, 0, 320.0, 485.0);
UIPickerView * thePickerView = [[UIPickerView alloc] initWithFrame:thePickerFrame];

[pickerActionSheet release], pickerActionSheet =
        [[UIActionSheet alloc] initWithTitle:@"Choose" delegate:self 
                               cancelButtonTitle:@"Cancel"
                               destructiveButtonTitle:nil
                               otherButtonTitles:@"Next", nil];
thePickerView.showsSelectionIndicator = YES;
thePickerView.dataSource = self;
thePickerView.delegate = self;

[pickerActionSheet addSubview:thePickerView];
[thePickerView selectRow:0 inComponent:0 animated:NO];
[thePickerView release];

[pickerActionSheet showFromRect:currentTextField.bounds
                             inView:currentTextField animated:NO];
pickerActionSheet.frame = thePickerFrame;

推荐答案

我认为UIActionSheet不可调整大小，在你的代码中， [pickerActionSheet addSubview：thePickerView]; 行，你会看到ActionSheet完全适合按钮。

I think that UIActionSheet is not resizable, try to comment in your code the line with [pickerActionSheet addSubview:thePickerView]; and you will see that the ActionSheet fits perfecly to the buttons.

我会推荐一个具有自定义 UIViewController 的 UIPopoverController 。类似这样：

I would recommend a UIPopoverController with a custom UIViewController. Something like this:

UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
toolbar.barStyle = UIBarStyleDefault;

UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"back" style:UIBarButtonItemStyleBordered target:self action:@selector(BACK_ACTION:)];
UIBarButtonItem *chooseButton = [[UIBarButtonItem alloc] initWithTitle:@"Choose" style:UIBarButtonItemStylePlain target:nil action:nil];
UIBarButtonItem *nextButton = [[UIBarButtonItem alloc] initWithTitle:@"Next" style:UIBarButtonItemStyleBordered target:self action:@selector(NEXT_ACTION:)];
UIBarButtonItem *fixed1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *fixed2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

[toolbar setItems:[NSArray arrayWithObjects:cancelButton, fixed1, chooseButton, fixed2, nextButton, nil]];

UIPickerView    *thePickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 44, 320, 216)];
CGRect thePickerFrame = thePickerView.frame;
thePickerFrame.origin.y = toolbar.frame.size.height;
[thePickerView setFrame:thePickerFrame];


UIView *view = [[UIView alloc] init];
[view addSubview:thePickerView];
[view addSubview:toolbar];

UIViewController *vc = [[UIViewController alloc] init];
[vc setView:view];
[vc setContentSizeForViewInPopover:CGSizeMake(320, 260)];

popover = [[UIPopoverController alloc] initWithContentViewController:vc];

thePickerView.showsSelectionIndicator = YES;
thePickerView.dataSource = self;
thePickerView.delegate = self;

[thePickerView selectRow:0 inComponent:0 animated:NO];

[popover presentPopoverFromRect:currentTextField.bounds inView:currentTextField permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

其中popover是在.h中声明的类变量（ UIPopoverController * popover;

Where popover is a class variable declared in .h (UIPopoverController *popover;).

顺便说一句，我使用ARC，所以代码中没有发布。

By the way, I'm using ARC, so there is no release in the code.

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