iphone小知识点 网上网下搜集中

//视频教程

 http://v.youku.com/v_show/id_XMjk1OTk3MzIw.html?f=6608541

 

//启动画面为横屏！！

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

   //启动画面为横屏！！

    [applicationsetStatusBarOrientation:UIInterfaceOrientationLandscapeRightanimated:NO];

    

   self.window = [[[UIWindowalloc]initWithFrame:[[UIScreenmainScreen]bounds]]autorelease];

   // Override point for customization after application launch.

   self.viewController = [[[ViewControlleralloc]initWithNibName:@"ViewController"bundle:nil]autorelease];

   self.window.rootViewController =self.viewController;

    [self.windowmakeKeyAndVisible];

   returnYES;

}

//获得屏幕当前屏幕方向

    NSLog(@"[[UIDevice currentDevice] orientation]==%d",[[UIDevicecurrentDevice]orientation]);}

这个函数只能是在程序完全启动之后，才能调用之后，一般用于viewdidload之后。