一片楓葉

The presenting view controller is responsible for dismissing the view controller it presented. If you call this method on the presented view controller itself, however, it automatically forwards the message to the presenting view controller.

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 2 {
 3     self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
 4     // Override point for customization after application launch.
 5     _svVCA = [[SvViewController alloc] initWithNibName:nil bundle:nil];
 6     self.viewController = [[[UINavigationController alloc] initWithRootViewController:_svVCA] autorelease];
 7     [_svVCA release];
 8     _svVCA.view.backgroundColor = [UIColor clearColor];
 9     _svVCA.contentStr = @"A";
10     
11     self.window.rootViewController = self.viewController;    
12     [self.window makeKeyAndVisible];
13     
14     _svVCB = [[SvViewController alloc] init];
15     _svVCB.contentStr = @"B";
16     [_svVCA presentModalViewController:_svVCB animated:NO];
17     [_svVCB release];
18     
19     _svVCC = [[SvViewController alloc] init];
20     _svVCC.contentStr = @"C";
21     [_svVCB presentModalViewController:_svVCC animated:NO];
22     [_svVCC release];
23     
24     [_svVCB dismissModalViewControllerAnimated:NO];
25     //[_svVCB dismissModalViewControllerAnimated:NO];
26     
27     return YES;
28 }