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<span style="color: rgb(0, 0, 255);">- (void)setupScrollView{ UIScrollView *scrollView = [[UIScrollView alloc] init]; scrollView.frame = self.view.bounds; scrollView.delegate
= self; [self.view addSubview:scrollView]; // 2.添加图片 CGFloat imageW = scrollView.frame.size.width; CGFloat imageH = scrollView.frame.size.height; for
(int
index = 0; index<IWNewfeatureImageCount; index++) { UIImageView *imageView = [[UIImageView alloc] init]; // 设置图片 NSString *name = [NSString stringWithFormat:@"new_feature_%d", index + 1]; imageView.image = [UIImage imageWithName:name]; // 设置frame CGFloat imageX = index * imageW; imageView.frame = CGRectMake(imageX, 0, imageW, imageH); [scrollView addSubview:imageView]; // 在最后一个图片上面添加按钮 if
(index == IWNewfeatureImageCount - 1) { [self setupLastImageView:imageView]; } } // 3.设置滚动的内容尺寸 scrollView.contentSize = CGSizeMake(imageW * IWNewfeatureImageCount, 0); // 取消水平滚动条 scrollView.showsHorizontalScrollIndicator = NO； scrollView.pagingEnabled = YES;// 取消滚动的弹簧效果 scrollView.bounces = NO;}</span> |
②设置分页，求出分页的页码，需要使用UIScrollView的代理，使用代理方法
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// 1.添加 UIPageControl *pageControl = [[UIPageControl alloc] init]; pageControl.numberOfPages = IWNewfeatureImageCount; CGFloat centerX = self.view.frame.size.width * 0.5; CGFloat centerY = self.view.frame.size.height - 30; pageControl.center = CGPointMake(centerX, centerY); pageControl.bounds = CGRectMake(0, 0, 100, 30); pageControl.userInteractionEnabled = NO; [self.view addSubview:pageControl]; self.pageControl = pageControl; // 2.设置圆点的颜色 pageControl.currentPageIndicatorTintColor = IWColor(253, 98, 42); pageControl.pageIndicatorTintColor = IWColor(189, 189, 189);②求出分页的页码，需要使用UIScrollView的代理，使用代理方法/** * 只要UIScrollView滚动了,就会调用 * */- (void)scrollViewDidScroll:(UIScrollView *)scrollView{ // 1.取出水平方向上滚动的距离 CGFloat offsetX = scrollView.contentOffset.x; // 2.求出页码 double
pageDouble = offsetX / scrollView.frame.size.width; int
pageInt = (int)(pageDouble + 0.5); self.pageControl.currentPage = pageInt;} |
③在最后一张图片添加按钮，跳转控制器
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- (void)setupLastImageView:(UIImageView *)imageView{ // 0.让imageView能跟用户交互 imageView.userInteractionEnabled = YES; // 1.添加开始按钮 UIButton *startButton = [[UIButton alloc] init]; [startButton setBackgroundImage:[UIImage imageWithName:@"new_feature_finish_button"] forState:UIControlStateNormal]; [startButton setBackgroundImage:[UIImage imageWithName:@"new_feature_finish_button_highlighted"] forState:UIControlStateHighlighted]; // 2.设置frame CGFloat centerX = imageView.frame.size.width * 0.5; CGFloat centerY = imageView.frame.size.height * 0.6; startButton.center = CGPointMake(centerX, centerY); startButton.bounds = (CGRect){CGPointZero, startButton.currentBackgroundImage.size}; // 3.设置文字 [startButton setTitle:@"开始使用"
forState:UIControlStateNormal]; [startButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [startButton addTarget:self
action:@selector(start) forControlEvents:UIControlEventTouchUpInside]; [imageView addSubview:startButton]; // 4.添加checkbox UIButton *checkbox = [[UIButton alloc] init]; checkbox.selected = YES; [checkbox setTitle:@"分享给大家"
forState:UIControlStateNormal]; [checkbox setImage:[UIImage imageWithName:@"new_feature_share_false"] forState:UIControlStateNormal]; [checkbox setImage:[UIImage imageWithName:@"new_feature_share_true"] forState:UIControlStateSelected]; checkbox.bounds = CGRectMake(0, 0, 200, 50); CGFloat checkboxCenterX = centerX; CGFloat checkboxCenterY = imageView.frame.size.height * 0.5; checkbox.center = CGPointMake(checkboxCenterX, checkboxCenterY); [checkbox setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; checkbox.titleLabel.font = [UIFont systemFontOfSize:15]; [checkbox addTarget:self
action:@selector(checkboxClick:) forControlEvents:UIControlEventTouchUpInside]; checkbox.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 10); [imageView addSubview:checkbox];}④点击开始使用时候，切换根控制器- (void)start{ // 显示状态栏 [UIApplication sharedApplication].statusBarHidden = NO; // 切换窗口的根控制器 self.view.window.rootViewController = [[IWTabBarViewController alloc] init];} |
④利用沙盒，将使用的软件版本号与沙盒中存储的版本号进行对比，高于原版本就跳转到 IWNewfeatureViewController ，相同就跳转到IWTabBarViewController：
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NSString
*key = @"CFBundleVersion"; // 取出沙盒中存储的上次使用软件的版本号 NSUserDefaults
*defaults = [NSUserDefaults
standardUserDefaults]; NSString
*lastVersion = [defaults stringForKey:key]; // 获得当前软件的版本号 NSString
*currentVersion = [NSBundle
mainBundle].infoDictionary[key]; if
([currentVersion isEqualToString:lastVersion]) { // 显示状态栏 application.statusBarHidden = NO; self.window.rootViewController = [[IWTabBarViewController alloc] init]; } else
{ // 新版本 self.window.rootViewController = [[IWNewfeatureViewController alloc] init]; // 存储新版本 [defaults setObject:currentVersion forKey:key]; [defaults synchronize]; } |
原文地址：http://www.cnblogs.com/angongIT/p/3779124.html
