Question

我想自定义UIBarButtonItem，这是我的代码。

在ios4.3中可行，但是ios5，这很奇怪。 uibarbuttonitem消失在视线之外，但是你点击它仍然有效果。这是透明的。

我需要帮助，如何制作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

这里有一个关于iOS 5中新自定义功能的精彩教程：http://www.raywenderlich.com/4344/user-interface-customization-in-ios-5

以下是该网站代码的副本，该代码处理UIBarButtonItems的自定义，其非常不言自明：

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];

Answer 2

我的问题与此类似。在我的情况下，该按钮似乎没有启用。当你放入它仍然有效果。一个小小的解决方案是用白色改变按钮的色调，但我正在寻找更好的方法：）

我的代码是：

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:)];

如何在ios5中自定义UIBarButtonItem

2 个答案: