使用分页uiScrollView缩放

时间:2010-08-13 18:05:37

标签: iphone objective-c

从我昨天提出的问题开始。

我有一个只能在y轴上分页的分页scrollView。目前,我有它的工作,我有一个包含不同UIImages的UIImageViews数组,而photoScroller正如我所期望的那样工作,但是当我尝试将imageView添加为另一个scrollView的子视图以允许捏合和缩放时,它会破坏图库。

休息时我的意思是它只加载第一张图片,但剩下的空间用于其他图片而不是捏合。


     - (void)loadView{

// Creates 4 images from the file names UIImage *img0 = [UIImage imageNamed:@"29.png"]; UIImage *img1 = [UIImage imageNamed:@"33.png"]; UIImage *img2 = [UIImage imageNamed:@"IMAG0085.JPG"]; UIImage *img3 = [UIImage imageNamed:@"DSC00081.JPG"]; NSMutableArray *imgArray = [[NSMutableArray alloc] initWithObjects:img0,img1,img2, img3, nil]; //Places images into array CGRect pagingScrollViewFrame = [[UIScreen mainScreen] bounds]; // Creates initial scrollViewFrame to be the size of the screen pagingScrollViewFrame.origin.x -= 10; //moves it 10px to the left pagingScrollViewFrame.size.width += 20; //adds 20px to the right creating a 10px blank buffer either side pagingScrollView = [[UIScrollView alloc] initWithFrame:pagingScrollViewFrame]; //Creates the pagingScrollView with the size specified with the frame pagingScrollView.pagingEnabled = YES; //allow paging pagingScrollView.backgroundColor = [UIColor blackColor]; //background black pagingScrollView.contentSize = CGSizeMake(pagingScrollViewFrame.size.width * [imgArray count], pagingScrollViewFrame.size.height); //sets the width of the scroll view depending on the number in amges in the array. self.view = pagingScrollView; //add the pagingScrollView to the main view for (int i=0; i < [imgArray count]; i++) { //loop to add the images to an imageView and then add them to the paging ScrollView /*--------Gets the image from the array and places it in an imageView------*/ UIImageView *page = [[UIImageView alloc] initWithImage: [imgArray objectAtIndex:i]]; page.frame = [[UIScreen mainScreen] bounds]; page.contentMode = UIViewContentModeScaleAspectFit; //[page.setClipsToBounds:YES]; CGRect cgRect = [[UIScreen mainScreen] bounds]; CGSize cgSize = cgRect.size; [page setFrame:CGRectMake((i*pagingScrollViewFrame.size.width)+10, 0, cgSize.width, cgSize.height)]; /*--------Creates Zooming scrollView and adds the imageView as a subView------*/ UIScrollView *zoomingScrollView = [[UIScrollView alloc] initWithFrame:cgRect]; zoomingScrollView.delegate = self; zoomingScrollView.maximumZoomScale = 4.0; zoomingScrollView.clipsToBounds = YES; [zoomingScrollView addSubview:page]; [pagingScrollView addSubview:zoomingScrollView]; }} - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ NSArray *array = [scrollView subviews]; return [array lastObject]; }

1 个答案:

答案 0 :(得分:2)

zoomingScrollView.frame = CGRectMake((i*pagingScrollViewFrame.size.width)+10, 0, cgSize.width, cgSize.height)];
page.frame = zoomingScrollView.bounds;