UI --- Xcode7 模拟器运行时崩溃解决方法

在 AppDelagate.m 文件的第一个方法中添加以下代码:

UIViewController *viewVC = [[UIViewController alloc] init];
viewVC.view.hidden = YES;
self.window.rootViewController = viewVC;
[viewVC release];
           

整个方法如下:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    UIViewController *viewVC = [[UIViewController alloc] init];
    viewVC.view.hidden = YES;
    self.window.rootViewController = viewVC;
    //从这里开始添加自己的代码
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}
           

注意:

由于此时创建了一个 UIViewController 对象, 所以在获得 window 视图的所有子视图中, 索引值为0的是, UIViewController 对象.