導航按鈕文本陰影不出現iOS 7

Question

我迄今爲止更新了我們的應用程序的導航欄後退按鈕項目以在iOS 7中查看，因爲它在iOS 6中，但是我無法獲得文字陰影以顯示在iOS 7中。

的iOS 7：

的iOS 6：

（寫了用於測試大的偏移）

代碼：

UIButton *backButton = [[UIButton alloc] initWithFrame: CGRectMake(0, 0, 80.0f + width_offset, 30.0f)]; 
    UIImage *buttonImage = [[UIImage imageNamed:@"navigation_back_btn"] resizableImageWithCapInsets:UIEdgeInsetsMake(5, 15, 5, 5)]; 
    [backButton setBackgroundImage:buttonImage forState:UIControlStateNormal]; 
    [backButton setTitle:title forState:UIControlStateNormal]; 
    [backButton.titleLabel setFont:[UIFont defaultFontWithType:kFontBold andSize:12]]; 
    [backButton.titleLabel setTextColor:[UIColor whiteColor]]; 
    [backButton.titleLabel setShadowColor = [UIColor blackColor]]; 
    [backButton.titleLabel setShadowOffset:CGSizeMake(5.0f, 5.0f)]; 
    [backButton addTarget:viewController action:@selector(popBack) forControlEvents:UIControlEventTouchUpInside]; 
    UIBarButtonItem *backButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton]; 
    viewController.navigationItem.leftBarButtonItem = backButtonItem; 

我也想將按鈕移到左邊，但這不重要。

Answer 1

嘗試設置在UIButton本身標題陰影顏色：

[backButton setTitleShadowColor:[UIColor blackColor] forState:UIControlStateNormal];