UICollectionView inside UITableViewCell - programmatically - uitableview

Basically, I am trying to obtain something similar to the result of this tutorial: http://ashfurrow.com/blog/putting-a-uicollectionview-in-a-uitableviewcell
I am quite lost in getting it working as I would like... my goal is:
Changing the collectionViewCell's from the tutorial to custom cells, containing for example a UILabel...
what code would I need to change? I have tried changing code in the following lines (from AFTableViewCell.h) but haven't gotten it working...
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
if (!(self = [super initWithStyle:style reuseIdentifier:reuseIdentifier])) return nil;
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
layout.minimumInteritemSpacing= 100000.0f;
layout.sectionInset = UIEdgeInsetsMake(0, 5, 0, 0);
layout.itemSize = CGSizeMake(40, 22);
layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
self.collectionView = [[AFIndexedCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:CollectionViewCellIdentifier];
self.collectionView.backgroundColor = [UIColor blackColor];
self.collectionView.showsHorizontalScrollIndicator = YES;
[self.contentView addSubview:self.collectionView];
return self;
}
I would like to add, for example, the corresponding tableviewcell + collectionviewcell numbers on each label;
my idea was (excuse my poor knowledge of iOS... I am beginning):
changing the registerClass method for a custom cell:
[self.collectionView registerClass:[MyCustomCollectionViewCell class] forCellWithReuseIdentifier:CollectionViewCellIdentifier];
having the MyCustomCollectionViewCell code the following in its .h file:
#interface MyCustomCollectionViewCell : UICollectionViewCell
#property (strong, nonatomic) UILabel *simpleLabel;
#end
and then, I thought I would only have to add the following to where, in the tutorial, the background for each UICollectionViewCell background was set (AFViewController.m):
-(MyCustomCollectionViewCell *)collectionView:(AFIndexedCollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
MyCustomCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CollectionViewCellIdentifier forIndexPath:indexPath];
NSArray *collectionViewArray = self.colorArray[collectionView.index];
cell.backgroundColor = collectionViewArray[indexPath.item];
cell.simpleLabel.text = #"hi";
return cell;
}
However, no label is displayed... (just tried to make it display "hi" for ease of testing)

Fixed with help from this question: Programmatically Creating UILabel
Custom CollectionViewClass not needed, just edited the following method in AFViewController.m:
-(UICollectionViewCell *)collectionView:(AFIndexedCollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CollectionViewCellIdentifier forIndexPath:indexPath];
NSArray *collectionViewArray = self.colorArray[collectionView.index];
cell.backgroundColor = collectionViewArray[indexPath.item];
UILabel *fromLabel = [[UILabel alloc]initWithFrame:CGRectMake(0,0,40,22)];
fromLabel.text = #"hi";
fromLabel.numberOfLines = 1;
fromLabel.baselineAdjustment = UIBaselineAdjustmentAlignBaselines; // or UIBaselineAdjustmentAlignCenters, or UIBaselineAdjustmentNone
fromLabel.adjustsFontSizeToFitWidth = YES;
fromLabel.adjustsLetterSpacingToFitWidth = YES;
fromLabel.minimumScaleFactor = 10.0f/12.0f;
fromLabel.clipsToBounds = YES;
fromLabel.backgroundColor = [UIColor clearColor];
fromLabel.textColor = [UIColor blackColor];
fromLabel.textAlignment = NSTextAlignmentLeft;
[cell addSubview:fromLabel];
return cell;
}

Related

Programmatically creating custom cells in objective c?

I'm having issues getting customs cells to show up. Below I've posted a simplified version of my code:
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
NSLog(#"Being Called?");
//reuseID = #"newtableid";
self.backgroundColor = [UIColor redColor];
self.name = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 50)];
self.name.backgroundColor = [UIColor redColor];
[self addSubview:self.name];
return self;
}
In my viewController, I set up the tableView in the ViewDidLoad method:
self.table = [[UITableView alloc] initWithFrame:CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width, 400) style:UITableViewStylePlain];
self.table.delegate = self;
self.table.dataSource = self;
self.table.backgroundColor = [UIColor blackColor];
[self.view addSubview:self.table];
[self.table registerClass:NewTableViewCell.class forCellReuseIdentifier:#"Cell"];
Then, I complete the cellForRowAt method like so:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *simpleTableIdentifier = #"Cell";
NewTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[NewTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.backgroundColor = [UIColor blackColor];
cell.name.text = [_familyDetails objectAtIndex:indexPath.row];
return cell;
}
The problem is, I don't get anything to show up on my cells. My NewTableVIewCell constructor is called, but the cells show up blank (without color, label, etc.) What am I doing wrong?
If you're creating the cell programatically, make sure you register your cell to your table view.
[self.tableView registerClass:UITableViewCell.class forCellReuseIdentifier:"yourCellId"];
I am using a generic UITableViewCell in this case. You can try to change the text label of it in cellForRowAtIndexPath to see whether that works.
Be sure to change it to your custom cell class if needed.
In order to dequeueReusableCellWithIdentifier, you have to use
- (void)registerClass:(Class)cellClass
forCellReuseIdentifier:(NSString *)identifier
and normally you will not even have to instantiate NewTableViewCell if you use dequeueReusableCellWithIdentifier:forIndexPath:. However, if you still use dequeueReusableCellWithIdentifier: then you still need to instantiate your cell subclass (thanks for reminding me Alejandro Ivan).
EDIT: So you have to write something like this, in your viewDidLoad for example :
- (void)viewDidLoad {
[super viewDidLoad];
// Your stuff...
[self.table registerClass:[NewTableViewCell class] forCellReuseIdentifier: simpleTableIdentifier];
}

View description in myUICollectionView didn't work

I'm a beginner to learn ios. It's nice to be here! I have some problem using the UICollectionView.
I've add this in myUICollectionCell.m and linked the item to storyBoard
#import "QuartzCore/QuartzCore.h"
#implementation myCollectionViewCell
#synthesize myImageView
-(instancetype)initWithFrame:(CGRect)frameRect {
self = [super initWithFrame:frameRect];
if (self) {
myImageView =[[UIImageView alloc] initWithFrame:CGRectMake(0, 200, 60, 60)];
myImageView.layer.cornerRadius = view2.frame.size.width/2;
myImageView.layer.masksToBounds = YES;
[self.contentView addSubview:myImageView];
}
return self;
}
#end
ViewController.m
#import "myCollectionViewCell.h"
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
static NSString * CellIdentifier = #"cell";
myCollectionViewCell *cell = (myCollectionViewCell*)[collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath];
cell.myImageview.image = [UIImage imageNamed:#"2.jpg"];
return cell;
}
myImageView still didn't change to circle as I described.
It can only work when I put the description into collectionView:cellForItemAtIndexPath:
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
static NSString * CellIdentifier = #"cell";
myCollectionViewCell *cell = (myCollectionViewCell*)[collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath];
cell.myImageview.image = [UIImage imageNamed:#"2.jpg"];
myImageView.layer.cornerRadius = view2.frame.size.width/2;
myImageView.layer.masksToBounds = YES;
return cell;
}
why is that? I'm confusing with the place where I should describe my view on my cell.
It seems you are using xib or storyboard, so it won't call initWithFrame: of UICollectionViewCell.
Using awakeFromNib instead:
-(void)awakeFromNib
{
[super awakeFromNib];
//Is myImageView an outlet of storyboard? if it is you needn't realloc a UIImageView instance
//myImageView =[[UIImageView alloc] initWithFrame:CGRectMake(0, 200, 60, 60)];
myImageView.layer.cornerRadius = 5.0;
myImageView.layer.masksToBounds = YES;
//[self.contentView addSubview:myImageView];
}

Reusability issue on UICollectionView

I had worked with UITableView but I have never ever use of UICollectionView in my apps. So I want to create UICollectionView programmatically.
Following is my code:
UICollectionViewFlowLayout *layout =[[UICollectionViewFlowLayout alloc] init];
_collectionView=[[UICollectionView alloc] initWithFrame:CGRectMake(0, 43, self.view.frame.size.width, self.view.frame.size.height - 84) collectionViewLayout:layout];
[_collectionView setDataSource:self];
[_collectionView setDelegate:self];
[_collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"cellIdentifier"];
layout.sectionInset = UIEdgeInsetsMake(5, 5, 5, 5);
layout.minimumInteritemSpacing = 5;
[_collectionView setBackgroundColor:self.view.backgroundColor];
[self.view addSubview:_collectionView];
Delegate and Datasource methods.
#pragma mark -
#pragma mark - UITableView Delegate Methods
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return 15;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
if (cell.selected)
cell.backgroundColor = [UIColor lightGrayColor]; // highlight selection cell
else
cell.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"background-grid.png"]]; // Default Cell
UIImageView *imgPhoto = [[UIImageView alloc] init];
imgPhoto.userInteractionEnabled = YES;
imgPhoto.backgroundColor = [UIColor grayColor];
imgPhoto.frame = CGRectMake(3.5, 5, 90, 80);
imgPhoto.clipsToBounds = YES;
imgPhoto.image = [UIImage imageNamed:#"product.png"];
[cell.contentView addSubview:imgPhoto];
UILabel *lblCategoryTitle = [[UILabel alloc] init];
[lblCategoryTitle setFont: [UIFont fontWithName:#"OpenSans-Bold" size:14]];
lblCategoryTitle.textAlignment = NSTextAlignmentCenter;
lblCategoryTitle.frame = CGRectMake(3.5, 90, 90, 24);
lblCategoryTitle.textColor = [UIColor blackColor];
lblCategoryTitle.text = #"Product 1";
lblCategoryTitle.backgroundColor = [UIColor clearColor];
lblCategoryTitle.numberOfLines = 2;
[cell.contentView addSubview:lblCategoryTitle];
return cell;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return CGSizeMake(97, 118);
}
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *datasetCell =[collectionView cellForItemAtIndexPath:indexPath];
datasetCell.backgroundColor = [UIColor lightGrayColor]; // highlight selection
}
-(void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *datasetCell =[collectionView cellForItemAtIndexPath:indexPath];
datasetCell.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"background-grid.png"]]; // default cell
}
Then my screen Look like
Question 1 - Look at above screen, you will see that 1st and 3rd item is looking blur (see Product 1 ) then 2nd/middle item ? why this is happening ?
And whenever I scroll up/down UICollectionView then items are overwrite, Look at Next image
After looked this image, from my experience of UITableView, it's happening because of Reusability of cell of UICollectionView.
Question 2 - Then how can i solve it?
Please give my your suggestion and help me on this issue.
EDITED: (suggestion of #Dima)
Custom cell
.h file
#import <UIKit/UIKit.h>
#interface customeGridCell : UICollectionViewCell
#property (nonatomic, strong) UIImageView *imgPhoto;
#property (nonatomic, strong) UILabel *lblCategoryTitle;
#end
.m file
#import "customeGridCell.h"
#implementation customeGridCell
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
self.imgPhoto = [[UIImageView alloc] init];
self.imgPhoto.userInteractionEnabled = YES;
self.imgPhoto.backgroundColor = [UIColor grayColor];
self.imgPhoto.frame = CGRectMake(3.5, 5, 90, 80);
[self addSubview:self.imgPhoto];
self.lblCategoryTitle = [[UILabel alloc] init];
[self.lblCategoryTitle setFont: [UIFont fontWithName:#"OpenSans-Bold" size:14]];
self.lblCategoryTitle.textAlignment = NSTextAlignmentCenter;
self.lblCategoryTitle.frame = CGRectMake(3.5, 90, 90, 24);
self.lblCategoryTitle.textColor = [UIColor blackColor];
self.lblCategoryTitle.backgroundColor = [UIColor clearColor];
self.lblCategoryTitle.numberOfLines = 2;
[self addSubview:self.lblCategoryTitle];
}
return self;
}
And code of cellForItemAtIndexPath
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
customeGridCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
if (cell.selected)
cell.backgroundColor = [UIColor lightGrayColor]; // highlight selection cell
else
cell.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"background-grid.png"]]; // Default Cell
cell.imgPhoto.image = [UIImage imageNamed:#"product.png"];
cell.lblCategoryTitle.text = #"Product 1";
return cell;
}
The problem is in your collectionView:cellForItemAtIndexPath: method. You are adding those subviews every single time a cell is reused, on top of each other.
You should create a UICollectionViewCell subclass and add all of the extra subviews you want into its initializer. This will make sure they only get added once.
sample code:
Here is an example of how you would subclass UICollectionViewCell
#interface MyCustomCell : UICollectionViewCell
#property (nonatomic, strong) UILabel *customLabel;
#property (nonatomic, strong) UIImageView *customImageView;
#end
// in implementation file
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
// initialize label and imageview here, then add them as subviews to the content view
}
return self;
}
Then when you are grabbing a cell you just do something like:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
MyCustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
if (cell.selected)
cell.backgroundColor = [UIColor lightGrayColor]; // highlight selection cell
else
cell.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"background-grid.png"]]; // Default Cell
cell.customImageView.image = // whatever
cell.customLabel.text = // whatever
return cell;
}
You can do it with two way.
Remove UILabel form view.
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
for (UILabel *lbl in cell.contentView.subviews)
{
if ([lbl isKindOfClass:[UILabel class]])
{
[lbl removeFromSuperview];
}
}
UILabel *lblCategoryTitle =[[UILabel alloc]init];
[lblCategoryTitle setFont: [UIFont fontWithName:#"OpenSans-Bold" size:14]];
lblCategoryTitle.textAlignment = NSTextAlignmentCenter;
lblCategoryTitle.frame = CGRectMake(3.5, 90, 90, 24);
lblCategoryTitle.textColor = [UIColor blackColor];
lblCategoryTitle.text = #"Product 1";
lblCategoryTitle.backgroundColor = [UIColor clearColor];
lblCategoryTitle.numberOfLines = 2;
[cell.contentView addSubview:lblCategoryTitle];
return cell;
}
Use tag to get Label
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
UILabel *lblCategoryTitle =(UILabel *) [cell viewWithTag:5];
if (!lblCategoryTitle) {
lblCategoryTitle=[[UILabel alloc]init];
[cell.contentView addSubview:lblCategoryTitle];
}
[lblCategoryTitle setFont: [UIFont fontWithName:#"OpenSans-Bold" size:14]];
lblCategoryTitle.tag=5;
lblCategoryTitle.textAlignment = NSTextAlignmentCenter;
lblCategoryTitle.frame = CGRectMake(3.5, 90, 90, 24);
lblCategoryTitle.textColor = [UIColor blackColor];
lblCategoryTitle.text = #"Product 1";
lblCategoryTitle.backgroundColor = [UIColor clearColor];
lblCategoryTitle.numberOfLines = 2;
return cell;
}

UICollectionView shows only the first item

I'm working on a project similar to a video album. In that I'm using UICollectionView to display the thumb images of those videos. The worst part is that I should not use storyboard or xib files. I have tried to do this programatically. I'm currently working on this code:
- (void)viewDidLoad
{
i = 0;
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
[layout setItemSize:CGSizeMake(self.view.frame.size.width/2.5,self.view.frame.size.width/2.5)];
collectionView = [[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout];
[collectionView setDataSource:self];
[collectionView setDelegate:self];
collectionView.backgroundColor = [UIColor whiteColor];
[collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"MyCell"];
[self.view addSubview:collectionView];
[super viewDidLoad];
}
I have given 1 for return in numberOfSectionsInCollectionView and [myArray count] for return in numberOfItemsInSection.
-(UICollectionViewCell *) collectionView:(UICollectionView *)cV cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [cV dequeueReusableCellWithReuseIdentifier:#"MyCell" forIndexPath:indexPath];
cell.backgroundColor = [UIColor blackColor];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(cell.frame.origin.x , cell.frame.origin.y, cell.frame.size.width, (cell.frame.size.height - cell.frame.size.height/3))];
cell.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(cell.frame.origin.x , cell.frame.origin.y, cell.frame.size.width, (cell.frame.size.height - cell.frame.size.height/3))];
imageView.image = [UIImage imageNamed:[storeData objectAtIndex:i]];
[cell addSubview:imageView];
i++;
return cell;
}
I have rechecked the images in myArray. When the view loads, the collection view shows only the first image. Other 4 cells are empty. What is wrong with my code?
For those who is experiencing this problem, frame is the key. I've encountered this and changed:
cell.imageView.frame = cell.frame;
into
cell.imageView.frame = cell.bounds;
The op is using:
cell.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(cell.frame.origin.x , cell.frame.origin.y, cell.frame.size.width, (cell.frame.size.height - cell.frame.size.height/3))];
That's why this happened.
You shouldn't be using i as a counter. The whole point of the delegate method sending you an indexPath is that it tells you what information to get from your array of source data. So, remove i and use the indexPath.row instead.
You also don't need 2 image views. But you should probably keep your special subview and not use the cells built in image view.
You do not need a counter. As indicated by Wain, use indexPath.row.
Importantly, you should not create new subviews in cellForItemAtIndexPath, but rather use this method to fill them appropriately with content. You could put the image views into your storyboard prototype cells and identify them with tags. Each cell returned from dequeueReusableCellWithReuseIdentifier will already contain the image view.
you should never create ui elements in cellForRowAtIndexPath:. Subclass a collection view cell like so:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
NSLog(#"INIT WITH FRAME FOR CELL");
//we create the UIImageView here
imageView = [[UIImageView alloc] init];
imageView.contentMode = UIViewContentModeScaleAspectFill;
imageView.frame = CGRectMake(cell.frame.origin.x , cell.frame.origin.y, cell.frame.size.width, (cell.frame.size.height - cell.frame.size.height/3));
[self.contentView addSubview:imageView]; //the only place we want to do this addSubview: is here!
}
return self;
}
Then add that subclassed cell as a property and alter this code:]
[collectionView registerClass:[customCellClass class] forCellWithReuseIdentifier:#"MyCell"];
The perform these changes:
-(customCellClass *) collectionView:(UICollectionView *)cV cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = (customCellClass *)[cV dequeueReusableCellWithReuseIdentifier:#"MyCell" forIndexPath:indexPath];
cell.backgroundColor = [UIColor blackColor];
imageView.image = [UIImage imageNamed:[storeData objectAtIndex:indexPath.row]];
return cell;
}
A final adjustment would be to move the the [super viewDidLoad] to this:
- (void)viewDidLoad
{
[super viewDidLoad];
//insert the rest of the code here rather than before viewDidLoad
}

iOS7 UICollectionViewCell not being reused when dequeuing cell

the method
-(void)prepareForReuse
In my collection view cell is never called - leading me to suspect that the UICollectionView is not dequeuing cells properly. This is causing lagyness and memory issues.
I've set up my collectionView as follows:
static NSString *cellIdentifier = #"Mycell";
-(void)initMyView
{
[self.collectionView registerClass:[UrlLoadableCollectionViewCell class] forCellWithReuseIdentifier:cellIdentifier];
}
-(UICollectionViewCell*)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UrlLoadableCollectionViewCell *cell = [self.collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:index];
if (cell.contentView.frame.size.width < 100) // tried removing this as well but didn't help
{
cell.layer.shouldRasterize = YES;
cell.layer.rasterizationScale = [UIScreen mainScreen].scale;
} else {
cell.layer.shouldRasterize = NO;
}
// prepare cell
}
EDIT
Additional Code
static NSString *cellIdentifier = #"Mycell";
#interface UIThumbnailGalleryView
#property (nonatomic,strong) UICollectionView *collectionView;
#end
#implementation UIThumbnailGalleryView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self initView:frame];
}
return self;
}
-(void)initView:(CGRect)frame
{
self.collectionView = [[UICollectionView alloc] initWithFrame:self.bounds collectionViewLayout:[self getGalleryLayout]];
[self.collectionView registerClass:[UrlLoadableCollectionViewCell class] forCellWithReuseIdentifier:cellIdentifier];
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
self.collectionView.autoresizingMask = UIViewAutoresizingFlexibleHeight;
[self addSubview:self.collectionView];
self.collectionView.backgroundColor = [UIColor blackColor];
[self.collectionView setShowsHorizontalScrollIndicator:NO];
[self.collectionView setShowsVerticalScrollIndicator:NO];
}
-(UICollectionViewCell*)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UrlLoadableCollectionViewCell *cell = [self.dequeueReusableCellAtIndex:indexPath];
}
-(UrlLoadableCollectionViewCell *)dequeueReusableCellAtIndex:(NSIndexPath *)index
{
UrlLoadableCollectionViewCell *cell = (UrlLoadableCollectionViewCell *)[self.collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:index];
return cell;
}
-(UICollectionViewFlowLayout *)getGalleryLayout
{
UICollectionViewFlowLayout *galleryLayout = [[UICollectionViewFlowLayout alloc] init];
[galleryLayout setItemSize:CGSizeMake(77, 77)];
galleryLayout.minimumInteritemSpacing = 3.0;
galleryLayout.minimumLineSpacing = 3.0;
// iOS 6 - might need to uncomment
//[galleryLayout setSectionInset:UIEdgeInsetsMake(44,5, 44, 5)];
return galleryLayout;
}
Please post a screenshot of the xib/scene that contains your UICollectionViewCell showing it's inspector. Or, if you're cell is constructed entirely in code, post the relevant code that registers your class with the collection view. Usually when this occurs it's because of a typo in the Cell Identifier.
You don't seem to be calling initMyView anywhere.

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