爲整個應用程序設置絕對背景

Question

我想爲我的應用程序放置一個絕對背景圖像，不管怎樣都不會移動。

我希望看起來好像我的segues只是將destinationViewController的視圖移動到這個背景上，就好像它是一個頁面一樣。

我已經看到這個答案，set background image for entire iPhone/iPad app，但如上所述，colorWithPatternImage吞噬記憶。

我想在Objective-C和Swift中給出答案。

感謝

Answer 1

最簡單的方法是將一個UIImageView添加到您的根窗口，並確保您的所有其他意見有透明的背景;

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { 
    // Override point for customization after application launch. 

    let window=self.window! 

    let backgroundView=UIImageView(frame: window.frame) 

    backgroundView.image=UIImage(named: "Background.JPG")! 

    window.addSubview(backgroundView) 

    return true 
} 

或在Objective-C

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 
// Override point for customization after application launch. 

    UIWindow *window=application.windows.firstObject; 
    UIImageView *imageView=[[UIImageView alloc] initWithFrame:window.frame]; 

    imageView.image=[UIImage imageNamed:@"Background.jpg"]; 

    [window addSubview:imageView]; 
    return YES; 
}