导航控制器和标签控制器

通常我们设置标签控制器时,给标签控制器上添加选中图片和未选中图片,但是一般情况下都有渲染颜色 ,想要彻底换成我们想要的图片的效果,需要进行设置

//设置被选中和为被选中的图片
+ (UITabBarItem *)tabbarItemWithTitle:(NSString *)title image:(UIImage *)image selectedImage:(UIImage *)selectedImage {
    image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    selectedImage = [selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    return [[UITabBarItem alloc] initWithTitle:title image:image selectedImage:selectedImage];
}

导航控制器的颜色问题

1//导航控制器的背景颜色

    self.navigationController.navigationBar.barTintColor = [UIColor redColor];

2//导航控制器的渲染颜色 -- 底色

    self.navigationController.navigationBar.tintColor = [UIColor yellowColor];

3//给导航条上添加按钮时,是给viewController添加,而不是给navigationController上添加

    UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(handleAdd:)];
    self.navigationItem.rightBarButtonItem = rightItem;

 

4//给导航栏标题更改字体

    //6.设置导航条标题文字的大小和颜色
    NSDictionary *dic = @{
                          NSFontAttributeName:[UIFont boldSystemFontOfSize:18],
                          NSForegroundColorAttributeName:[UIColor whiteColor]
                          };
    self.navigationController.navigationBar.titleTextAttributes = dic;

设置状态条 -- 修改为白色

UIStatusBarStyleLightContent

View controller-based status bar appearance  给yes

 

5//控制器和状态栏的高度问题

    NSLog(@"%f", [UIApplication sharedApplication].statusBarFrame.size.height);  --20
    NSLog(@"%f", [[[UINavigationController alloc] init] autorelease].navigationBar.frame.size.height); -- 44
    NSLog(@"%f", [[[UITabBarController alloc] init] autorelease].tabBar.frame.size.height); -- 49