I have a UIScrollView with paging enabled with multiple subviews on the page: a UIButton, UIwebview and UIImageView. Both the webview and the image change on every page. This works fine. I used Apples scrolling image paging example to get me started.
But when I add a second UIImageView, the position of image I have in place already gets the new values and the new image doesn't display.
This is the code inside viewdidload for the first image (works fine):
// load all the images from our bundle and add them to the scroll view
for (i = 1; i <= kNumImages; i++)
{
NSString *imageName = [NSString stringWithFormat:@"image%d.jpg", i];
UIImage *image2 = [UIImage imageNamed:imageName];
UIImageView *imageView2 = [[UIImageView alloc] initWithImage:image2];
// setup each frame to a default height and width, it will be properly placed when we call "updateScrollList"
CGRect rect = imageView2.frame;
rect.size.height = imageviewScrollObjHeight;
rect.size.width = imageviewScrollObjWidth;
// Get the Layer of any view
CALayer * imageLayer = [imageView2 layer];
[imageLayer setMasksToBounds:YES];
[imageLayer setCornerRadius:7.0];
// You can even add a border
[imageLayer setBorderWidth:1.0];
[imageLayer setBorderColor:[[UIColor lightGrayColor] CGColor]];
imageView2.frame = rect;
imageView2.tag = i; // tag our images for later use when we place them in serial fashion
[scrollView1 addSubview:imageView2];
}
[self layoutScrollImages]; // now place the photos in serial layout within the scrollview
This is the code to layout the first image on every page, different image per page(outside viewdidload)(works fine):
// layout images for imageview1
- (void)layoutScrollImages
{
UIImageView *imageView = nil;
NSArray *subviews = [scrollView1 subviews];
// reposition all image subviews in a horizontal serial fashion
CGFloat curXLoc = 10;
for (imageView in subviews)
{
if ([imageView isKindOfClass:[UIImageView class]] && imageView.tag > 0)
{
CGRect frame = imageView.frame;
frame.origin = CGPointMake(curXLoc, 50);
imageView.frame = frame;
curXLoc += (kScrollObjWidth);
}
}
// set the content size so it can be scrollable
[scrollView1 setContentSize:CGSizeMake((kNumImages * kScrollObjWidth), [scrollView1 bounds].size.height)];
}
This is the code for the second image (inside viewdidload): (when i remove [self layoutNavScrollImages]; the image loads only on the first page)
for (i = 1; i <= kNumImages; i++)
{
UIImage *navBarImage = [UIImage imageNamed:@"navigationbar.png"];
UIImageView *imageViewNavBar = [[UIImageView alloc] initWithImage:navBarImage];
// setup each frame to a default height and width, it will be properly placed when we call "updateScrollList"
CGRect navBarRect = imageViewNavBar.frame;
navBarRect.size.height = 44;
navBarRect.size.width = 320;
navBarRect.origin.x = 0;
navBarRect.origin.y = 0;
/* Get the Layer of any view
CALayer * imageLayer = [imageView3 layer];
[imageLayer setMasksToBounds:YES];
[imageLayer setCornerRadius:7.0];
// You can even add a border
[imageLayer setBorderWidth:1.0];
[imageLayer setBorderColor:[[UIColor lightGrayColor] CGColor]];
*/
imageViewNavBar.frame = navBarRect;
imageViewNavBar.tag = i; // tag our images for later use when we place them in serial fashion
[scrollView1 addSubview:imageViewNavBar];
}
[self layoutNavScrollImages];
And the code outside viewdidload:(this overwrites the position of the first image)
- (void)layoutNavScrollImages
{
UIImageView *view = nil;
NSArray *subviews = [scrollView1 subviews];
// reposition all image subviews in a horizontal serial fashion
CGFloat curXLoc = 0;
for (view in subviews)
{
if ([view isKindOfClass:[UIImageView class]] && view.tag > 0)
{
CGRect frame = view.frame;
frame.origin = CGPointMake(curXLoc, 0);
view.frame = frame;
curXLoc += (kScrollObjWidth);
}
}
// set the content size so it can be scrollable
[scrollView1 setContentSize:CGSizeMake((kNumImages * kScrollObjWidth), [scrollView1 bounds].size.height)];
}