如何在ios5中自定義UIBarButtonItem

Question

我想自定義UIBarButtonItem，這裏是我的代碼。

它在ios4.3中有效，但是ios5，這很奇怪。 的消失的UIBarButtonItem淡出人們的視線，但你點擊它仍然有effect.As是透明的。

我需要幫助，如何使的UIBarButtonItem display.thanks

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; 
btn.frame = CGRectMake(0, 0, 50, 30); 
[btn setBackgroundImage:[UIImage imageNamed:@"btnRegister.png"] forState:UIControlStateNormal]; 
[btn setTitle:@"register" forState:UIControlStateNormal]; 
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; 
[btn addTarget:self action:@selector(registerClick:) forControlEvents:UIControlEventTouchUpInside]; 
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithCustomView:btn]; 
self.navigationItem.rightBarButtonItem = item1; 

Answer 1

我的問題是相似的這個。在我的情況下，該按鈕不顯示啓用。而當你投入它仍然有效果。一個小的解決辦法是改變與白鍵的色調，但我正在尋找一種更好的方法:)

我的代碼是：

buttonImage = [UIImage imageNamed:@"top_icon_share.png"]; 
UIButton *buttonShare = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height)]; 
[buttonShare setBackgroundImage:buttonImage forState:UIControlStateNormal]; 
[buttonShare addTarget:self action:@selector(buttonSharePressed) 
     forControlEvents:UIControlEventTouchUpInside]; 
[buttonShare setShowsTouchWhenHighlighted:YES];]; 
    UIBarButtonItem *buttonBarShare = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"top_icon_share.png"] style:UIBarButtonItemStylePlain target:self action:@selector(buttonSharePressed:)]; 

Answer 2

有一個關於iOS 5中新在這裏定製功能一個偉大的教程：http://www.raywenderlich.com/4344/user-interface-customization-in-ios-5

下面是該網站與UIBarButtonItems的定製交易，其不言自明的代碼的副本：

UIImage *button30 = [[UIImage imageNamed:@"button_textured_30"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 5, 0, 5)]; 
UIImage *button24 = [[UIImage imageNamed:@"button_textured_24"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 5, 0, 5)]; 

[[UIBarButtonItem appearance] setBackgroundImage:button30 forState:UIControlStateNormal 
barMetrics:UIBarMetricsDefault]; 
[[UIBarButtonItem appearance] setBackgroundImage:button24 forState:UIControlStateNormal 
barMetrics:UIBarMetricsLandscapePhone]; 

[[UIBarButtonItem appearance] setTitleTextAttributes: 
    [NSDictionary dictionaryWithObjectsAndKeys: 
    [UIColor colorWithRed:220.0/255.0 green:104.0/255.0 blue:1.0/255.0 alpha:1.0], 
    UITextAttributeTextColor, 
    [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0], 
    UITextAttributeTextShadowColor, 
    [NSValue valueWithUIOffset:UIOffsetMake(0, 1)], 
    UITextAttributeTextShadowOffset, 
    [UIFont fontWithName:@"AmericanTypewriter" size:0.0], 
    UITextAttributeFont, 
    nil] 
forState:UIControlStateNormal];