Ios 财产'；窗口'；在类型为'；CustomTabBar'；

我想做的是在我的iOS应用程序中自定义

uitabaritem

s的文本和图像。我想我可以通过使用

CustomTabBar

类对

UITabBarController

进行子类化来实现这一点

当我尝试使用下面的代码执行此操作时，会出现一个错误，说明：

在“CustomTabBar”类型的对象上找不到属性“window”

。如何正确地将

UITabBarController

子类化，以便自定义文本和图像

CustomTabBar.h:

#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#import <Parse/PFCloud.h>

@interface CustomTabBar : UITabBarController

@end

#import "CustomTabBar.h"

@interface CustomTabBar ()

@end

@implementation CustomTabBar

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    // Assign tab bar item with titles
    UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
    UITabBar *tabBar = tabBarController.tabBar;
    UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0];
    UITabBarItem *tabBarItem2 = [tabBar.items objectAtIndex:1];

    tabBarItem1.title = @"Search";
    tabBarItem2.title = @"MatchCenter";
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

---

您发布的代码位于选项卡栏控制器子类中，因此选项卡栏控制器只是“self”

- (void)viewDidLoad {
    [super viewDidLoad];

    UITabBar *tabBar = self.tabBar;
    UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0];
    UITabBarItem *tabBarItem2 = [tabBar.items objectAtIndex:1];

    tabBarItem1.title = @"Search";
    tabBarItem2.title = @"MatchCenter";
}