iOS啓動頁加載廣告

一、定義全局成員變量

@interface AppDelegate ()

 

@property (strong, nonatomic) UIImageView *adImageView;

@property (strong, nonatomic) UINavigationController *rootNavi;

 

@end

 

二、實現簡單廣告界面

@implementation AppDelegate

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

 

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

    TextViewController* mainVC = [[TextViewController alloc] init];

    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:mainVC];

    self.rootNavi = nav;

 

    if ([[UIDevice currentDevice].systemVersion doubleValue] < 7.0) {

        [nav.navigationBar setBarTintColor:[UIColor clearColor]];

    } else {

        [nav.navigationBar setTintColor:[UIColor clearColor]];

    }

    注意：必定要設置空的rootViewController

    UIViewController *emptyView = [[ UIViewController alloc ] initWithNibName:nil bundle:nil];

    self. window .rootViewController = emptyView;

    

    self.adImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, ScreenWidth, ScreenHeight)];

    [self.adImageView setImage:[UIImage imageNamed:@"bg_welcome"]];

    [self.window addSubview:self.adImageView];

    [self performSelector:@selector(removeAdImageView) withObject:nil afterDelay:3];

    

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    

    return YES;

}

 

三、移除廣告頁從新設置根控制器

- (void)removeAdImageView

{

    [UIView animateWithDuration:0.3f animations:^{

        self.adImageView.transform = CGAffineTransformMakeScale(0.5f,0.5f);

        self.adImageView.alpha = 0.f;

    } completion:^(BOOL finished) {

        [self.adImageView removeFromSuperview];

//        self.window.rootViewController = self.rootNavi;

        [self restoreRootViewController:self.rootNavi];

    }];

}

 

- (void)restoreRootViewController:(UIViewController *)rootViewController

{

    typedef void (^Animation)(void);

    UIWindow* window = self.window;

    

    rootViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

    Animation animation = ^{

        BOOL oldState = [UIView areAnimationsEnabled];

        [UIView setAnimationsEnabled:NO];

        window.rootViewController = rootViewController;

        [UIView setAnimationsEnabled:oldState];

    };

    

    [UIView transitionWithView:window

                      duration:0.5f

                       options:UIViewAnimationOptionTransitionCrossDissolve

                    animations:animation

                    completion:nil];

}

@end

 

四、如需實現倒計時、跳過只須要自定義View去操做就ok

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