从两个图像数组中填充2个集合视图

Question

所以我一直在四处搜索，虽然有很多线程可以解释我需要的东西，但仍然无法成功执行我的代码。我在ViewController上有两个集合视图，一个有6个单元，另一个有32个单元（4个顶部到底部，8个）。每个集合视图需要从3个图像的数组中填充，它们是相同的图像，只是不同的颜色，我想让它们随机填充。我有两个cell.xib文件，每个集合视图一个。下面是我正在使用的ViewController的.m文件。

#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 

这里是我的cell.xib文件之一

#import <UIKit/UIKit.h> 

@interface RemotesCollectionCell : UICollectionViewCell 

@property (strong, nonatomic) IBOutlet UIImageView *remoteImageView; 


@end 

.h文件中这里是笔尖.m文件。

#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 

我对所有的代码表示歉意，但我希望它能帮助你，帮助我提前谢谢你。请原谅我的noob显示。

Answer 1

//在awakeFromNib方法中define _remoteImageView.tag = 1;这样就可以在cellForIndexPath

每当细胞被随机化阵列后装载时的装载图像访问

- (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); 
    } 

//这里。

 -(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; 

      };