UIActionSheet按鈕的顏色

Question

如何更改UIActionSheet按鈕顏色的顏色？

Answer 1

的iOS 8（UIAlertController）

這是超級簡單的做，如果您使用的是UIAlertController。只需更改UIAlertController視圖上的色調顏色即可。

[alertController.view setTintColor:[UIColor red]; 

的iOS 7（UIActionSheet）

我通過使用這種簡單的方法成功改變文本的顏色。

- (void) changeTextColorForUIActionSheet:(UIActionSheet*)actionSheet { 
    UIColor *tintColor = [UIColor redColor]; 

    NSArray *actionSheetButtons = actionSheet.subviews; 
    for (int i = 0; [actionSheetButtons count] > i; i++) { 
     UIView *view = (UIView*)[actionSheetButtons objectAtIndex:i]; 
     if([view isKindOfClass:[UIButton class]]){ 
      UIButton *btn = (UIButton*)view; 
      [btn setTitleColor:tintColor forState:UIControlStateNormal]; 

     } 
    } 
} 

確保運行此後你叫

[actionSheet showInView]; 

如果你之前[showInView]調用它，所有的按鈕，但取消按鈕將被着色。希望這可以幫助別人！

Answer 2

不幸的是，沒有使用未記錄的API，沒有官方的方法來改變UIActionSheet上的按鈕顏色。如果您繼承UIActionSheet控件，您可能可以自定義這個。

見這個例子：http://blog.corywiles.com/customizing-uiactionsheet-buttons

Answer 3

我已經創建了子類UICustomActionSheet，允許自定義字體，顏色和內部UIActionSheet按鈕的圖像。這絕對是AppStore的安全，你可以下一個鏈接上找到這個類的代碼：

https://github.com/gloomcore/UICustomActionSheet

享受吧！

Answer 4

我們可以使用背景圖像來做到這一點。我認爲這是最簡單的方法。

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Actionsheet" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil]; 
     [actionSheet addButtonWithTitle:@"Button 1"]; //Blue color 
     [actionSheet addButtonWithTitle:@"Button 2"]; 
     [actionSheet addButtonWithTitle:@"Cancel"]; 
     [actionSheet addButtonWithTitle:nil]; 
     [actionSheet setCancelButtonIndex:2]; 
     [actionSheet setDestructiveButtonIndex:1]; 
     [actionSheet showInView:self.view]; 
     UIButton *button = [[actionSheet subviews] objectAtIndex:1]; 
     UIImage *img = [button backgroundImageForState:UIControlStateHighlighted];//[UIImage imageNamed:@"alert_button.png"]; 
     [button setBackgroundImage:img forState:UIControlStateNormal]; 

Answer 5

您可以輕鬆地通過使用下面的代碼

蘋果UIActionSheetDelegate協議文檔

https://developer.apple.com/library/ios/documentation/uikit/reference/UIModalViewDelegate_Protocol/UIActionSheetDelegate/UIActionSheetDelegate.html

- (void)willPresentActionSheet:(UIActionSheet *)actionSheet 
{ 
    for (UIView *_currentView in actionSheet.subviews) 
    { 
     if ([_currentView isKindOfClass:[UIButton class]]) 
     {  
      UIButton *button = (UIButton *)_currentView; 
      [button setTitleColor:YOUR_COLOR forState:UIControlStateNormal]; 
     } 
    } 
}