Add multiple UIImageview in UIScrollview programmatically - ios

Question

UIView *view = nil;
NSArray *subviews = [scrollView subviews];
CGFloat curXLoc = 0;
for (view in subviews)
{
if ([view isKindOfClass:[UIView class]] && view.tag > 0)
{
CGRect frame = view.frame;
frame.origin = CGPointMake(curXLoc, 0);
view.frame = frame;
curXLoc += (kScrollObjWidth);
}
}
I had placed one Scrollview, within this scroll view i place 5 UIImageview in XIB file
I have one image and one button, whenever I clicked the button the image should be loaded into all the UIImageviews within the UIScrollview programmatically.
and also I used the following coding
for(UIImageView *addview in Scroll)
{
if([addview isKindOfClass:[UIImageView class]])
{
UIImageView *newImage = (UIImageView *)addview;
newImage.image = [UIImage imageNamed:#"EarP010.jpg"];
}
}

Answer 1

Try this,
NSMutableArray * imagesArray = [[NSMutableArray alloc]init];
for (int imageCount = 0; imageCount < (noOfImages);imageCount++)
{
[imagesArray addObject:[UIImage imageNamed:#"localImagePath%d.png",imageCount]];
}
UIScrollView * scrollview = [[UIScrollView alloc]initWithFrame:CGRectMake(0.0,0.0,480.0,960.0)];
scrollview.contentSize = CGSizeMake(scrollview.size.width * (noOfImages),scrollview.frame.size.height);
scrollview.pagingEnabled = YES;
CGFloat xPos = 0.0;
for (UIImage * image in imagesArray) {
#autoreleasepool {
UIImageView * imageview = [[UIImageView alloc]initWithImage:image];
imageview.frame = CGRectMake(xPos, 0.0,scrollview.frame.size.width ,self.scrollView.frame.size.height);
[scrollview addSubview:imageview];
xPos += scrollview.size.width;
}
}

Answer 2

Use this
NSArray* objects = [[NSBundle mainBundle] loadNibNamed:#"your xib name" owner:nil options:nil];
UIView* mainView = [objects objectAtIndex:0];
for (UIView* view in [mainView subviews]) {
if([view isKindOfClass:[UIImageView class]])
{
UIImageView *iview = (UIImageView *)view;
iview.image = [UIImage imageNamed:#"your imagename.png"];
}
}

Answer 3

You could add the image views in a while loop if you know how many image view you need.
UIScrollView *sv = [UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
....
[self.view addSubView:sv];
int i = 0;
while(i < numberOfImages){
i = i + 200;
UIImageView *i = [UIImageView alloc] initWithFrame:CGRectMake(20, i, 200, 100)]
....
[sv addSubView:i];
i++;
}
This is one situation you could use. You will need to know the number of image views you need and what the Y values are on these image views. Much of this code is pseudo code and needs to be filled in.