Populating 2 collection views from two arrays of images - ios

Question

so I've been searching around and although there are many threads explaining close to what I need, I still can't successfully execute my code. I have two collection views on my ViewController, one with 6 cells running across, and another with 32 cells (4 top to bottom, 8 across). Each collection view needs to be populated from an array of 3 images, they're the same images, just different colors and I'd like to have them randomly populated. I have two cell.xib files, one for each collection view. Below is the .m file for the ViewController I'm working with.
#import "FirstViewController.h"
#import "CollectionViewCell.h"
#import "RemotesCollectionCell.h"
#import <stdlib.h>
#interface FirstViewController ()
#end
#implementation FirstViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UINib *cellNib = [UINib nibWithNibName:#"CollectionViewCell" bundle:nil];
[self.headerViewCollection registerNib:cellNib forCellWithReuseIdentifier:#"collectCell"];
UINib *cellNibRemote = [UINib nibWithNibName:#"RemotesCollectionCell" bundle:nil];
[self.remoteViewCollection registerNib:cellNibRemote forCellWithReuseIdentifier:#"collectCell"];
self.headLabel.text=[NSString stringWithFormat:#"H\nE\nA\nD"];
self.remotesLabel.text = [NSString stringWithFormat:#"R\nE\nM\nO\nT\nE\nS"];
self.title = [NSString stringWithFormat:#"OTIS"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
return 1;
};
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
if(collectionView == self.headerViewCollection){
return 6;
}
else return 32;
};
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"collectCell" forIndexPath:indexPath];
return cell;
};
#end
Here is my .h file for one of the cell.xib files
#import <UIKit/UIKit.h>
#interface RemotesCollectionCell : UICollectionViewCell
#property (strong, nonatomic) IBOutlet UIImageView *remoteImageView;
#end
And here is the .m file for the nib.
#import "RemotesCollectionCell.h"
#import "FirstViewController.h"
#implementation RemotesCollectionCell
- (void)awakeFromNib {
// Initialization code
NSMutableArray *remoteImages = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:#"red-gps.png"], [UIImage imageNamed:#"green-gps.png"], [UIImage imageNamed:#"orange-gps.png"], nil];
_remoteImageView = [[UIImageView alloc]initWithFrame:self.contentView.bounds];
[self.contentView addSubview:_remoteImageView];
NSLog(#"%lu", (unsigned long)remoteImages.count);
}
#end
I apologize for all the code but I hope it'll help you help me, thank you in advance. Please forgive my noob showing.

Answer 1

//In awakeFromNib method define with _remoteImageView.tag=1; so that you can access in cellForIndexPath
- (void)awakeFromNib {
// Initialization code
NSMutableArray *remoteImages = [[NSMutableArray alloc]initWithObjects:[UIImage imageNamed:#"red-gps.png"], [UIImage imageNamed:#"green-gps.png"], [UIImage imageNamed:#"orange-gps.png"], nil];
_remoteImageView = [[UIImageView alloc]initWithFrame:self.contentView.bounds];
_remoteImageView.tag=1;
[self.contentView addSubview:_remoteImageView];
NSLog(#"%lu", (unsigned long)remoteImages.count);
}
//Here whenever the cells are loading load the images after randomizing the array.
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"collectCell" forIndexPath:indexPath];
NSMutableArray *remoteImages = [[NSMutableArray alloc]initWithObjects:#"red-gps.png", #"green-gps.png", #"orange-gps.png", nil];
int count = (int)[remoteImages count];
for (int i = 0; i < count; ++i) {
// Select a random element between i and end of array to swap with.
int nElements = count - i;
int n = (arc4random() % nElements) + i;
[remoteImages exchangeObjectAtIndex:i withObjectAtIndex:n];
}
NSLog(#"remoteImages=%#",remoteImages);
UIImageView *imageView = (UIImageView*)[cell.contentView viewWithTag:1];
imageView.image=[UIImage imageNamed:[remoteImages objectAtIndex:0]];
return cell;
};