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我在ViewDidLoad下面的代碼，它壓扁我的UIImage/UIImageView。我想要圖像填充UIScrollView。UIScrollView南瓜UIImageView圖像
[super viewDidLoad];
_imageHolder = [[UIImageView alloc]initWithFrame:self.view.frame];
_scrollView = [[UIScrollView alloc]initWithFrame:self.view.frame];
[_scrollView setBackgroundColor:[UIColor purpleColor]];
// Tell the scroll view the size of the contents
self.scrollView.contentSize = self.view.frame.size;
self.scrollView.delegate = self;
self.scrollView.scrollEnabled = YES;
FfThumbnailData* thumbData = [self.arrayOfImages objectAtIndex:self.thisImageIndex];
UIImage* fullSizedImage = [[UIImage alloc]initWithContentsOfFile:thumbData.path];
[self.imageHolder setImage:fullSizedImage];
float x = fullSizedImage.size.width;
float y = fullSizedImage.size.height;
CGRect rect = CGRectMake(0, 0, x, y);
NSLog(@"Size of image: %@", NSStringFromCGRect(rect));
//
//[self.imageHolder setImage:[UIImage imageNamed:@"P1020486.png"]];
[self.scrollView addSubview:_imageHolder];
[self.view addSubview:self.scrollView];
_imageHolder.contentMode = UIViewContentModeScaleAspectFit;
我的的UIScrollView的backgound設置爲紫色爲清楚：
http://i1219.photobucket.com/albums/dd427/Dave_Chambers/IMG_0315.png
我要補充一點，以後我放大，然後縮小，圖像被正確地放置在滾動視圖並沒有被壓扁。
奇怪的是，註釋行[self.imageHolder setImage:[UIImage imageNamed:@"P1020486.png"]];正確顯示了僞圖像P1020486.png。
而且，當我下載我的應用程序數據，圖像看起來權利，的確是一個iPad圖像的正確尺寸 - {1936年，2592} - 由我的NSLog線報NSLog(@"Size of image: %@", NSStringFromCGRect(rect));
而且大小，以前我需要一個UIScrollView（用於縮放全尺寸視圖控制器中的照片）我訪問相同的圖像並使用以下代碼通過一個視圖控制器中的動畫顯示到另一個視圖控制器，並顯示正確。至關重要的是，第二部分代碼缺少UIScollview。
-(void)animateTransition:(int)buttonInPositon {
@try {
FfThumbnailData* thumbData = [self.images objectAtIndex:buttonInPositon];
UIImage* fullSizedImage = [[UIImage alloc]initWithContentsOfFile:thumbData.path];
fullSize = [[FullSizeViewController alloc]init];
fullSize.imageHolderGhost.contentMode = UIViewContentModeScaleAspectFit;
fullSize.arrayOfImages = self.images;
fullSize.imageToPresent = fullSizedImage;
fullSize.numberOfImages = self.images.count;
fullSize.thisImageIndex = buttonInPositon;
[fullSize.imageHolderGhost setImage:fullSizedImage];
float screenWidth = self.view.bounds.size.width;
float screenHeight = self.view.bounds.size.height;
NSLog(@"ButtonFrame: %@", NSStringFromCGRect(buttonFrame));
[fullSize.view setFrame:CGRectMake(buttonFrame.origin.x, buttonFrame.origin.y, buttonFrame.size.width, buttonFrame.size.height-44)];
NSLog(@"ButtonFrame: %@", NSStringFromCGRect(fullSize.view.frame));
[self.view addSubview:fullSize.view];
fullSize.view.backgroundColor = [UIColor clearColor];
[UIView animateWithDuration:0.9 delay:0 options:UIViewAnimationCurveEaseIn animations:^{
[fullSize.view setFrame:CGRectMake(0, 0, screenWidth, screenHeight)];
} completion:^(BOOL finished){
[[self navigationController] pushViewController:fullSize animated:NO];
self.navigationController.navigationBarHidden = YES;
}];
}
@catch (NSException *exception) {
NSLog(@"%@", exception);
}
}
爲了完整起見，用的UIScrollView的代碼具有以下方法在一個VC：
-(void)presentWithScrollview:(int)buttonInPositon {
FfThumbnailData* thumbData = [self.images objectAtIndex:buttonInPositon];
UIImage* fullSizedImage = [[UIImage alloc]initWithContentsOfFile:thumbData.path];
fullSize = [[FullSizeViewController alloc]init];
fullSize.arrayOfImages = self.images;
fullSize.imageToPresent = fullSizedImage;
fullSize.numberOfImages = self.images.count;
fullSize.thisImageIndex = buttonInPositon;
[[self navigationController] pushViewController:fullSize animated:NO];
self.navigationController.navigationBarHidden = YES;
}
和在目的地VC下列方法可能是相關的我的問題（ViewDidLoad在頂部粘貼這個問題）：
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
// Set up the minimum & maximum zoom scales
CGRect scrollViewFrame = self.scrollView.frame;
CGFloat scaleWidth = scrollViewFrame.size.width/self.scrollView.contentSize.width;
CGFloat scaleHeight = scrollViewFrame.size.height/self.scrollView.contentSize.height;
CGFloat minScale = MIN(scaleWidth, scaleHeight);
//
self.scrollView.minimumZoomScale = minScale;
//Can set this bigger if needs be - match iPhoto
self.scrollView.maximumZoomScale = 2.0f;
[self centerScrollViewContents];
}
- (void)centerScrollViewContents {
CGSize boundsSize = self.scrollView.bounds.size;
//NSLog(@"boundsSize: %@", NSStringFromCGSize(boundsSize));
CGRect contentsFrame = self.imageHolder.frame;
//NSLog(@"contentsFrame: %@", NSStringFromCGRect(contentsFrame));
if (contentsFrame.size.width < boundsSize.width) {
contentsFrame.origin.x = (boundsSize.width - contentsFrame.size.width)/2.0f;
} else {
contentsFrame.origin.x = 0.0f;
}
if (contentsFrame.size.height < boundsSize.height) {
contentsFrame.origin.y = (boundsSize.height - contentsFrame.size.height)/2.0f;
} else {
contentsFrame.origin.y = 0.0f;
}
self.imageHolder.frame = contentsFrame;
}
#pragma mark - UIScrollViewDelegate
- (UIView*)viewForZoomingInScrollView:(UIScrollView *)scrollView {
// Return the view that we want to zoom
return self.imageHolder;
//return self.scrollViewBar;
}
- (void)scrollViewDidZoom:(UIScrollView *)scrollView {
// The scroll view has zoomed, so we need to re-center the contents
[self centerScrollViewContents];
}
對此的任何幫助將是偉大的。謝謝