ios - 如何在 xib 的 appdelegate 中检查设备是 ipad 还是 iphone？

Question

这是我的didFinishLaunchingWithOptions:
目前我的应用程序仅适用于 iPhone，但我想要这两个(通用)。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    playerScreenViewController *playerScreen=[[playerScreenViewController alloc] initWithNibName:@"playerScreenViewController" bundle:nil];
    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:playerScreen];
    self.window.rootViewController = navigationController;
    [[UIApplication sharedApplication] setStatusBarHidden:YES];
    self.window.backgroundColor = [UIColor grayColor];
    [self.window makeKeyAndVisible];
    return YES;
}

而且我不知道如何在 appdelegate 中使用这个条件:

if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
    // iPad
} else {
    // iPhone
}

Answer 1

正如我在代码中看到的，您正在为 playerScreenViewController 使用 Xib。现在您需要为 iPad 环境创建 Xib。

然后像这样放置你的代码:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

        playerScreenViewController *playerScreen;
        if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
            // iPad
            playerScreen=[[playerScreenViewController alloc] initWithNibName:@"playerScreenViewController_iPad" bundle:nil];

        } else {
            // iPhone
            playerScreen=[[playerScreenViewController alloc] initWithNibName:@"playerScreenViewController" bundle:nil];

        }

        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:playerScreen];
        self.window.rootViewController = navigationController;
        [[UIApplication sharedApplication] setStatusBarHidden:YES];
        self.window.backgroundColor = [UIColor grayColor];
        [self.window makeKeyAndVisible];
        return YES;
    }

观察这一行

playerScreen=[[playerScreenViewController alloc] initWithNibName:@"playerScreenViewController_iPad" bundle:nil];

这里你必须为 iPad 环境传递 Xib 名称。