Question

我使用以下代码尝试在UIScrollView中显示图像。

[self.jarView addSubview:imgView];

它不起作用。但是，当我将子视图添加到普通视图时，它可以工作。我的UIScrollView名为jarView，imgView是UIImageView。

由于

Answer 1

这对我来说很好用：

UIScrollView *scrollview;
scrollview= [[UIScrollView alloc] initWithFrame:CGRectMake(,,,)];// set scroll view size
view = [[UIView alloc] initWithFrame:CGRectMake(y1,x1,y2,x2)];  //set the view size
UIImage *image1 = [UIImage imageNamed:imageName];
image=[[UIImageView alloc]initWithImage:image1];// take image size according to view
[view addSubview:image];
[scrollview addSubview:view];
[view release];

最后定义滚动scrollview的数量：

scrollview.contentSize = CGSizeMake(width,height);

Answer 2

确保正确设置了scrollView.contentSize属性值（宽度和高度应> 0）。

Answer 3

我正在给你我的示例代码。在这段代码中，我在滚动视图中添加了多个图像，这对我来说很好：

UIScrollView *scrollview;

- (void)anyFunction
{
    scrollview = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 30, 320, 50)];   
    NSInteger viewcount = [cat_Products count]; // if you have four content your view count is 4..(four)..in my case i fetch it from database

    CGFloat y2 = 0;
    UIView *view;
    UIImageView *imageView;
    NSString *imageName;

    for(int i = 0; i< viewcount; i++)   
    {  
        CGFloat y = i * 64;  
        y2 = y2 + 64;

        view = [[UIView alloc] initWithFrame:CGRectMake(y, 0, y2, 50)];

        imageName = [[NSString alloc] initWithFormat:@"c%i", (i + 1)]; // my image name is c1, c2, c3, c4 so i use this

        UIImage *image1 = [UIImage imageNamed:imageName];   
        imageView = [[UIImageView alloc] initWithImage:image1];
        [view addSubview:imageView];
        [scrollview addSubview:view];
        [view release];
        [imageView release];
        [imageName release];
    }    

scrollview.contentSize = CGSizeMake(viewcount*64,0);  //viewcount*64 because i use image width 64..and  second parameter is 0..because i not wants vertical scrolling... 
[myView addSubview:scrollview];
[scrollview release];
}

我希望这会有所帮助。

Answer 4

我在这里发布我的答案。试试吧。

您可以将所有图像加载到数组中。您可以设计具有一个图像视图的视图，并尝试以下代码：

数组名称：examplearray和视图名称：exampleview

-(void)updateImagesInScrollView
{
     int cnt = [examplearray count];

    for(int j=0; j< cnt; ++j)
    {
        NSArray *nibContents = [[NSBundle mainBundle] loadNibNamed:@"exampleview" 
                                                             owner:self 
                                                           options:nil];

        UIView *myView = [nibContents objectAtIndex:0];
        exampleview * rview= (exampleview *)myView;
        /* you can get your image from the array and set the image*/ 
        rview.imageview.image = yourimage;
        /*adding the view to your scrollview*/
        [self.ScrollView addSubview:rview];
    }
    /* you need to set  the content size of the scroll view */
    self.ScrollView.contentSize = CGSizeMake(X, self.mHorizontalScrollView.contentSize.height);
}

滚动视图中的图像

4 个答案: