Question

我决定为ios6和ios7使用不同的故事板，因此我需要在代码中实例化故事板。我在app delegate的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

中有这个方法

但没有任何反应，它总是只是在iPad模拟器上运行时实例化名为iPadStoryboard的故事板，我已经从info.plist中删除了主界面。有什么想法在这里发生吗？

- (void)loadStoryboards
{
    CGSize iOSDeviceScreenSize = [[UIScreen mainScreen] bounds].size;

    UIStoryboard *mainStoryboard = nil;
    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"6.0"))

        NSLog(@"1");
        if (iOSDeviceScreenSize.height == 480)
        {
            mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone-ios5" bundle:nil];
        } else {
            NSLog(@"loading iPad storyboard");
            mainStoryboard = [UIStoryboard storyboardWithName:@"iPadStoryboardOS6" bundle:nil];
        }

    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0"))

        NSLog(@"2");
        if (iOSDeviceScreenSize.height == 480)
        {

            mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone" bundle:nil];
        } else {
            mainStoryboard = [UIStoryboard storyboardWithName:@"iPadStoryboard" bundle:nil];
        }


    self.initialViewController = [mainStoryboard instantiateInitialViewController];
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.rootViewController = self.initialViewController;
    [self.window makeKeyAndVisible];
}

Answer 1

小心你如何检查iPad。 480px屏幕高度不包括iPhone 5.使用：

if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad)

在appdelegate中以编程方式实例化故事板

1 个答案: