ios - 如何将UIActivityIndi​​cator添加到应用程序的启动画面？

Question

是否可以将UIActivityIndi​​cator添加到我的应用程序的启动屏幕？

我在delegate.m文件中使用以下代码，它对我不起作用..

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

    [NSThread sleepForTimeInterval:5.0];  //for running splash screen more time
     UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

    spinner.center = CGPointMake(139.5, 75.5); // .5 so it doesn't blur
   [self.view addSubview:spinner];
    [spinner performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:1.0];


    return YES;
}

请帮我

Answer 1

尝试这个...

UIImageView * splashView; //在appDelegate.h中声明

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    splashView = [[UIImageView alloc]initWithFrame:self.window.bounds];
    if (self.window.bounds.size.height > 480)
    {
        splashView.image = [UIImage imageNamed:@"Default-568h@2x.png"];
    }
    else
    {
        splashView.image = [UIImage imageNamed:@"Default.png"];
    }

    [self.window addSubview:splashView];

   // Add your spinner here.

    return YES;
}

希望我能帮上忙。