Question

.m

self.elements=[myElements getElements];

imagesElements = [[NSMutableArray alloc]init];
for(ElemetsList *item in self.elements)
{
        UIImageView *oneelement = [[UIImageView alloc] initWithImage:[UIImage imageNamed:item.imgElement]];
        oneelement.frame = CGRectMake(item.positionX, item.positionY, item.width, item.height);
        oneelement.userInteractionEnabled=YES;
        [imagesElements addObject:oneelement];
}

for(UIImageView *img in imagesElements) 
    [self.view addSubview:img];

Then I try to interact with the elements:

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[event allTouches] anyObject];

    for(UIImageView *img in imagesElements) 
    {  
        if([self view] == img)
        {
            CGPoint location = [touch locationInView:self.view];
            img.center=location;
        }
    }
}

But “if ([self view] == img)” is always “NO”. Therefore, the elements do not drag.
How to drag and drop items if they are in the array?

Answer 1

When you add your image views, you make them subviews of self.view, therefore you need to test whether img is in the subviews array. It can’t be equal to the view that contains it.