iOS 设置导航条的主题

来源：互联网发布：工程网络计划图编辑：程序博客网时间：2024/05/16 03:44
/** *  系统在第一次使用这个类的时候调用(1个类只会调用一次) */+ (void)initialize{    // 设置导航栏主题    UINavigationBar *navBar = [UINavigationBar appearance];    // 设置背景图片    NSString *bgName = nil;    if (iOS7) { // 至少是iOS 7.0        bgName = @"NavBar64";    } else { // 非iOS7        bgName = @"NavBar";    }    [navBar setBackgroundImage:[UIImage imageNamed:bgName] forBarMetrics:UIBarMetricsDefault];        // 设置标题文字颜色    NSMutableDictionary *attrs = [NSMutableDictionary dictionary];    attrs[NSForegroundColorAttributeName] = [UIColor whiteColor];    attrs[NSFontAttributeName] = [UIFont systemFontOfSize:16];    [navBar setTitleTextAttributes:attrs];        //设置BarButtonItem的主题    UIBarButtonItem *item=[UIBarButtonItem appearance];    //设置文字颜色    NSMutableDictionary *itemAttrs=[NSMutableDictionary dictionary];    itemAttrs[NSFontAttributeName]=[UIFont systemFontOfSize:14];    itemAttrs[NSForegroundColorAttributeName]=[UIColor whiteColor];    [item setTitleTextAttributes:itemAttrs forState:UIControlStateNormal];    if (!iOS7) {        //设置按钮背景                [item setBackgroundImage:[UIImage imageNamed:@"NavButton"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];        [item setBackgroundImage:[UIImage imageNamed:@"NavButtonPressed"] forState:UIControlStateHighlighted barMetrics:UIBarMetricsDefault];                //设置返回按钮的背景        [item setBackButtonBackgroundImage:[UIImage imageNamed:@"NavButton"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];        [item setBackButtonBackgroundImage:[UIImage imageNamed:@"NavButtonPressed"] forState:UIControlStateHighlighted barMetrics:UIBarMetricsDefault];    }    else{        navBar.tintColor=[UIColor whiteColor];    }   }
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