iOS App 启动页

- (void)showGuiView

{

    // 取得当前版本号

    NSString *currentVersion = [NSBundle mainBundle].infoDictionary[@"CFBundleShortVersionString"];

    // 沙盒版本号

    NSString *lastVersion = [[NSUserDefaults standardUserDefaults] stringForKey:@"CFBundleShortVersionString"];

    // 判断版本号是否相等

    if (![currentVersion isEqualToString:lastVersion]) {

        PFGuideView *guideView = [PFGuideView showGuideView];

        guideView.frame = self.window.bounds;

        [self.window addSubview:guideView];

        // 写入沙盒

        [[NSUserDefaults standardUserDefaults] setObject:currentVersion forKey:@"CFBundleShortVersionString"];

        [[NSUserDefaults standardUserDefaults] synchronize];

    }

}

iOS App 启动页

原文：http://www.cnblogs.com/fantasy3588/p/5571104.html