有没有办法为UITabBarItem使用自定义选定的图像？ [英] Is there a way to use a custom selected image for UITabBarItem?

问题描述

当用户选择标签栏上的项目时，我喜欢自定义选择的图像，默认情况下，它选择为蓝色，但希望使用绿色。类似下面的任何想法？

I like to have a custom selected image when a user selects an item on the tab bar, by default it selects as blue like but would like to have a green color instead. something like below any thoughts?

alt text http：// www .freeimagehosting.net / uploads / 11a2137011.png

推荐答案

刚刚找到我的解决方案。基本上，我将UITabItem子类化并在导航控制器中设置：

Just found my solution. Basically, I subclassed UITabItem and set this in the navigation controller:

-(void) viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    CustomTabBarItem *tabItem = [[CustomTabBarItem alloc] initWithTitle:@"Events" image:[UIImage imageNamed:@"tabIcon.png"] tag:0];
    tabItem.customHighlightedImage=[UIImage imageNamed:@"tabIconSelected.png"];
    self.tabBarItem = tabItem;
    [tabItem release];
    tabItem=nil;            
}

以下是CustomTabBarItem类的样子：

Here's what the CustomTabBarItem class looks like:

@interface CustomTabBarItem : UITabBarItem
{
    UIImage  *customHighlightedImage;
}

@property (nonatomic, retain) UIImage *customHighlightedImage;

@end

实施：

#import "CustomTabBarItem.h

@implementation CustomTabBarItem

@synthesize customHighlightedImage;

- (void)dealloc {
    [customHighlightedImage release];
    customHighlightedImage=nil;
    [super dealloc];
}

-(UIImage *)selectedImage {
    return self.customHighlightedImage;
}

@end

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