UIActionSheet與許多項目疊加文本

我們有一個UIActionSheet與許多選項。在iPad上的iOS 7中，當滾動列表時，它會鬼影原始值。這是iPad 7的缺陷還是我們可以做出改變？ iOS 6 iPad和iPhone對我們來說看起來還不錯。UIActionSheet與許多項目疊加文本

before scrolling

after scrolling

// 
// ViewController.m 
// AlertViewTest 
// 
// 

#import "ViewController.h" 

@interface ViewController() 

@end 

@implementation ViewController 

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

    _data = [NSMutableArray new]; 
    [_data addObject:@"Arthur"]; 
    [_data addObject:@"Bertha"]; 
    [_data addObject:@"Cristobal"]; 
    [_data addObject:@"Dolly"]; 
    [_data addObject:@"Edouard"]; 
    [_data addObject:@"Fay"]; 
    [_data addObject:@"Gonzalo"]; 
    [_data addObject:@"Hanna"]; 
    [_data addObject:@"Isaias"]; 
    [_data addObject:@"Josephine"]; 
    [_data addObject:@"Kyle"]; 
    [_data addObject:@"Laura"]; 
    [_data addObject:@"Marco"]; 
    [_data addObject:@"Nana"]; 
    [_data addObject:@"Omar"]; 
    [_data addObject:@"Paulette"]; 
    [_data addObject:@"Rene"]; 
    [_data addObject:@"Sally"]; 
    [_data addObject:@"Teddy"]; 
    [_data addObject:@"Vicky"]; 
    [_data addObject:@"Wilfred"]; 

    [_data addObject:@"Ana"]; 
    [_data addObject:@"Bill"]; 
    [_data addObject:@"Claudette"]; 
    [_data addObject:@"Danny"]; 
    [_data addObject:@"Erika"]; 
    [_data addObject:@"Fred"]; 
    [_data addObject:@"Grace"]; 
    [_data addObject:@"Henri"]; 
    [_data addObject:@"Ida"]; 
    [_data addObject:@"Joaquin"]; 
    [_data addObject:@"Kate"]; 
    [_data addObject:@"Larry"]; 
    [_data addObject:@"Mindy"]; 
    [_data addObject:@"Nicholas"]; 
    [_data addObject:@"Odette"]; 
    [_data addObject:@"Peter"]; 
    [_data addObject:@"Rose"]; 
    [_data addObject:@"Sam"]; 
    [_data addObject:@"Teresa"]; 
    [_data addObject:@"Victor"]; 
    [_data addObject:@"Wanda"]; 

} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 
- (IBAction)showAlert:(id)sender { 
    if([self.actionSheet isVisible]) { 
     [self.actionSheet dismissWithClickedButtonIndex:[self.actionSheet cancelButtonIndex] animated:YES]; 

     self.actionSheet.delegate = nil; 
     self.actionSheet = nil; 

     return; 
    } 

    if(nil == self.actionSheet) { 
     self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"Select one" 
                 delegate:self 
               cancelButtonTitle:nil 
             destructiveButtonTitle:nil 
               otherButtonTitles:nil]; 


     if(![self shouldPresentActionSheet:self.actionSheet]) { 
      self.actionSheet = nil; 
      return; 
     } 


     [self.actionSheet setCancelButtonIndex:[self.actionSheet addButtonWithTitle:NSLocalizedString(@"Cancel", @"Cancel")]]; 

    } 

    if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) { 
     [self.actionSheet showFromBarButtonItem:self.button animated:YES]; 
    } else { 
     [self.actionSheet showFromToolbar:self.toolbar]; 
    } 
} 

-(BOOL)shouldPresentActionSheet:(UIActionSheet *)actionSheet 
{ 
    if(actionSheet == self.actionSheet) { 
     if([self.data count] == 0) { 
      return NO; 
     } 
     for(NSString *d in self.data) { 
      [self.actionSheet addButtonWithTitle:d]; 
     } 

    } 
    return YES; 
} 

@end

來源

2014-05-21 Jason Hocker

考慮使用另一個接口（彈出窗口中的表視圖）。行動表從來不打算像這樣被敲打，而且你真的只是把它當作懶惰的人的桌子來使用。 – matt

我會說你濫用UIActionSheet。這意味着用戶可以選擇不超過10個操作項目。當然，這不是一個很難的數字，但在行動表中顯示整個列表並不是一個好主意。我會創建一個單獨的視圖控制器，它具有一個允許用戶選擇的表視圖（實質上是一個操作表）。 –

我發佈後，我幾乎編輯它以發表評論，以保護我的信譽。通常這將是2-4項，但我們有一個客戶以奇怪的方式使用它。我發佈的只是示例代碼，以展示我認爲是一個錯誤。 –

-1

應該是這樣的

//view did load stuff 

- (IBAction)showAlert:(id)sender { 
self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"Title Here" 
                 delegate:self 
               cancelButtonTitle:nil 
              destructiveButtonTitle:nil 
               otherButtonTitles:nil]; 

// ObjC Fast Enumeration 
for (NSString *title in _data) { 
    [actionSheet addButtonWithTitle:title]; 
} 

[actionSheet addButtonWithTitle:@"Cancel"]; 
actionSheet.cancelButtonIndex = [_data count]; 

[actionSheet showInView:self.view];

Source

來源

2014-05-21 20:25:45

我認爲這不是我們正在做的。 –

在評論@Flores是正確的，這裏是你如何解決這個ISS ue：

- (void)willPresentActionSheet:(UIActionSheet *)actionSheet { 
    actionSheet.backgroundColor = [UIColor whiteColor]; 
    for (UIView *subview in actionSheet.subviews) { 
     subview.backgroundColor = [UIColor whiteColor]; 
    } 
}

來源

2014-07-31 16:47:43 meda

UIActionSheet與許多項目疊加文本

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