iphone - 在 UITabbar 中使用默认图标

Question

我在我的应用程序中使用选项卡栏控件，并希望在我的选项卡之一中使用默认搜索图标。我正在以编程方式制作选项卡栏，但我无法找到可以指定我在苹果文档中找到的 UITabBarSystemItemSearch 项目的属性。以下是我的标签栏代码

CouponsViewController *coupons = [[CouponsViewController alloc] init];
    UINavigationController *couponsNavigationController = [[UINavigationController alloc] initWithRootViewController:coupons];
    couponsNavigationController.tabBarItem.title = @"Coupons";
    couponsNavigationController.navigationBar.tintColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.1];
    [coupons release];

    SettingsViewController *settings = [[SettingsViewController alloc] init];
    UINavigationController *settingsNavigationController = [[UINavigationController alloc] initWithRootViewController:settings];
    settingsNavigationController.tabBarItem.title = @"Settings";
    settingsNavigationController.navigationBar.tintColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.1];
    [settings release];

    ProfileViewController *profile = [[ProfileViewController alloc] init];
    UINavigationController *profileNavigationController = [[UINavigationController alloc] initWithRootViewController:profile];
    profileNavigationController.tabBarItem.title = @"Profile";
    profileNavigationController.tabBarItem.image = [UIImage imageNamed:@"profileImg.png"];
    profileNavigationController.navigationBar.tintColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.1];
    [profile release];

    [tabBarController setViewControllers:[NSArray arrayWithObjects:loyaltyNavigationController,searchNavigationController,couponsNavigationController,settingsNavigationController,profileNavigationController,nil]  animated:NO];
    tabBarController.delegate=self;
    tabBarController.selectedIndex=0;

    [window addSubview:tabBarController.view];

Answer 1

在您要放入选项卡栏中的 UIViewController 子类中执行此代码。这最好在 View Controller 的初始化方法中完成:

- (id) init
{
    self.title = @"search";
    self.tabBarItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemSearch
                                                                 tag:0];

    return self;
}