Removing UIImageView From Button - ios

Question

This code i use for the purpose
if(editedImage !=nil)
{
[selectionView1 removeFromSuperview];
UIImageView *selectionView1 = [[UIImageView alloc] initWithImage:editedImage.image];
[_buttonScroll addSubview:selectionView1];
}
else{
[_buttonScroll addSubview:selectionView1];
}
i did in way when first time it executes then editedImage is nil so it goes in else then later on editedImage gets images like below
-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage : (UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
NSLog(#"%#",image);
editedImage = [[UIImageView alloc] initWithImage: image];
NSLog(#"%#",editedImage);
// editedImage is UIImageView
[picker dismissModalViewControllerAnimated:YES];
}
so it get filled and when second time my first code execute then editedImage is not null and it goes inside of if(editedImage !=nil) condition and for that now i want to delete old image which was on button and add this new image which i got from edited image
so the problem is old image is not getting removed what am i doing wrong can you please suggest me something

Answer 1

-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage : (UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
[_buttonScroll setImage:image forState:UIControlStateNormal];
[picker dismissModalViewControllerAnimated:YES];
}
try this simply :)

Answer 2

Try:
-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage : (UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
NSLog(#"%#",image);
if(editedImage)
[editedImage removeFromSuperview];
editedImage = [[UIImageView alloc] initWithImage: image];
NSLog(#"%#",editedImage);
// editedImage is UIImageView
[picker dismissModalViewControllerAnimated:YES];
}

Answer 3

What you need to do is keep track of the image that you are adding. You can either keep a property variable to the image that is being added, but a better option is to just set the tag of the image that gets added. If you change your first if statement to as follows:
//set a tag value to use (defined at the top of your file outside the #implementation)
#define PREVIOUS_VIEW_TAG 999
if(editedImage !=nil)
{
UIView* previousImageView = [_buttonScroll viewWithTag:PREVIOUS_VIEW_TAG];
[previousImageView removeFromSuperview];
UIImageView *selectionView1 = [[UIImageView alloc] initWithImage:editedImage.image];
selectionView1.tag = PREVIOUS_VIEW_TAG;
[_buttonScroll addSubview:selectionView1];
}
else{
selectionView1.tag = PREVIOUS_VIEW_TAG;
[_buttonScroll addSubview:selectionView1];
}
This should let you keep track of the view that you are adding. The value of the PREVIOUS_VIEW_TAG could be anything, I just picked 999.
Also keeping in mind what #Bhargavi suggested, using [_buttonScroll setBackgroundImage:selectionView1] and then removing with [_buttonScroll setBackgroundImage:nil]; (or just override by setting the new backgroundImage) would also work. However, to specifically answer your question, perhaps consider keeping track of the view with a tag.