如何更改UIScrollView上的圖像

Question

我有多個圖像的滾動視圖。圖像可滾動。

我使用下面的代碼：

scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)]; 

scrollView.pagingEnabled = YES; 

scrollView.delegate = self; 

scrollView.showsVerticalScrollIndicator = NO; 

scrollView.showsHorizontalScrollIndicator = NO; 


NSInteger numberOfViews = [arrayImage count]; 

for (int i = 0; i < numberOfViews; i++) 
{ 
    CGFloat yOrigin = i * scrollView.frame.size.width; 
    imageView = [[UIImageView alloc]initWithFrame:CGRectMake(yOrigin +30, 0, self.view.frame.size.width-60 , self.view.frame.size.height)]; 
    imageView.image = [UIImage imageNamed:[arrayImage objectAtIndex:i]]; 
    [scrollView addSubview:imageView]; 
    [imageView release]; 
} 
scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * numberOfViews,0); 
[self.view addSubview:scrollView]; 
[scrollView release] 

應用程序將與iPad方位工作，但圖像無法正常在風景模式下滾動。

它在縱向模式下工作正常，但圖像在橫向模式下合併。

如果有人有任何想法，請分享....

Answer 1

您必須設置圖像幀爲此用於每次界面方向改變或您必須在方向改變後再次重新繪製圖像

Answer 2

試試這個...

scrollView.delegate = self; 
scrollView.scrollEnabled = YES; 

int scrollWidth = 120; 
scrollView.contentSize = CGSizeMake(scrollWidth,80);  


int xOffset = 0; 
imageView.image = [UIImage imageNamed:[imagesName objectAtIndex:0]]; 

for(int index=0; index < [imagesName count]; index++) 
{  
    UIImageView *img = [[UIImageView alloc] init]; 
    img.bounds = CGRectMake(10, 10, 50, 50); 
    img.frame = CGRectMake(5+xOffset, 0, 50, 50); 
    NSLog(@"image: %@",[imagesName objectAtIndex:index]); 
    img.image = [UIImage imageNamed:[imagesName objectAtIndex:index]]; 
    [images insertObject:img atIndex:index];   
    scrollView.contentSize = CGSizeMake(scrollWidth+xOffset,110); 
    [scrollView addSubview:[images objectAtIndex:index]]; 

    xOffset += 70; 
} 

設置此...

imagesName = [[NSArray alloc]initWithObjects:@"image1.jpg",@"image2.jpg",@"image3.jpg",@"image4.jpg",@"image5.jpg",@"image6.png",@"image7.png",@"image9.png",nil]; 
images = [[NSMutableArray alloc]init];