UICollectionView：在屏幕位置获取单元格

Question

I have a UICollectionView that I have populated using JSON. It is a coverflow style layout with movie posters.

I was wondering if there was a way for me to display the title property of a cell at a certain point on the screen so that when i scroll horizontally, the title of the very center visible cell is displayed.

I have tried using indexPathForItemAtPoint, but the point seems to scroll with the collection view, always displaying the same index.

EDIT: adding code:

UIView *test = [[UIView alloc] initWithFrame:CGRectMake(10, 30, self.view.frame.size.width+180, 390)];
test.backgroundColor = [UIColor clearColor];
superView.backgroundColor = [UIColor blackColor];


PerspectiveFlowLayout *layout = [[PerspectiveFlowLayout alloc]init];
self.boxes.bounces = NO;

BoxView *boxes = [[BoxView alloc] initWithFrame:test.frame collectionViewLayout:layout];


[test addSubview:boxes];
[superView addSubview: test];
NSIndexPath *path = [self.boxes indexPathForItemAtPoint:[self.boxes convertPoint:CGPointMake(100.0, 100.0) toView:[self.boxes superview]]];

Cell *atpoint = [self.boxes cellForItemAtIndexPath:path];


NSLog(@"%@", atpoint.model.name);

Thank you so much for your help, Logan

Answer 1

进行转换点时，请尝试将项目四舍五入交换，因此您将从超级视图转到集合视图：

NSIndexPath *path = [self.boxes indexPathForItemAtPoint:[[self.boxes superview] convertPoint:CGPointMake(100.0, 100.0) toView:self.boxes]];