iPad UIActionSheet没有显示

Question

我使用this帖子中的代码在我的应用程序中显示操作表。但它显示像

原因是什么？

显示操作表的代码是

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                                         delegate:nil
                                                cancelButtonTitle:nil
                                           destructiveButtonTitle:nil
                                                otherButtonTitles:nil];

[actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

CGRect pickerFrame = CGRectMake(0, 40, 300, 300);

UIView *pickerView = [[UIView alloc] initWithFrame:pickerFrame];
pickerView.backgroundColor=[UIColor blackColor];

[actionSheet addSubview:pickerView];


UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
closeButton.momentary = YES; 
closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
closeButton.tintColor = [UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventValueChanged];
[actionSheet addSubview:closeButton];


[actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];

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

[self.view addSubview:actionSheet];

Answer 1

替换

 [actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];

与

 [actionSheet showFromRect:btnShare.frame inView:self.view animated:YES];

或者如果您想在iPad中使用操作表，请尝试使用此自定义控件 https://nodeload.github.com/Arrived/BlockAlertsAnd-ActionSheets/zipball/master

Answer 2

使用UIActionSheet showFromRect或UIActionSheet showFromBarButtonItem:方法。

UIActionSheetDelegate方法是 -

 - (void)showFromBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated;
 - (void)showFromRect:(CGRect)rect inView:(UIView *)view animated:(BOOL)animated; 

示例：

[actionSheet showFromRect:self.btnShare.frame inView:self.view animated:YES];

如果您使用的是iPhone应用，请使用UIActionSheet showInView方法 -

- (void)showInView:(UIView *)view;

示例 -

[actionSheet showInView:self.view.window];