- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
//设置启动画面停留时间，5s
[NSThread sleepForTimeInterval:5];
//初始化HomeViewController页面
HomeViewController *homeViewController = [[HomeViewController alloc] init];
self.window.rootViewController = homeViewController;
[homeViewController release];
[self.window makeKeyAndVisible];
return YES;
}