Question

我有一个基本网址，我在服务器中提取的数组中有图像名称。我正在使用集合视图，我必须在集合视图中显示所有23个图像我有两个问题

当我尝试访问cell.imageview.image时，它说单元格中没有属性图像视图，但在自定义cell.h文件中我创建了插座，我使用的是故事板

2.其中一个是字符串基本URL和从服务器john中提取的数组中图像的其他结束路径或文件名

这是我从数据中得到的 -

    {
    "added_by" = 1;
    "category_id" = 182;
    "category_image" = "shots.png";
    "category_name" = Shots;
    sequance = 19;
    status = 0;
    "store_id" = 1;
},
    {
    "added_by" = 1;
    "category_id" = 168;
    "category_image" = "classiccocktail.png";
    "category_name" = "Classic Cocktails";
    sequance = 20;
    status = 0;
    "store_id" = 1;
},
    {
    "added_by" = 1;
    "category_id" = 167;
    "category_image" = "sprit.png";
    "category_name" = "Non Alcoholic Bevereges";
    sequance = 21;
    status = 0;
    "store_id" = 1;
},
    {
    "added_by" = 1;
    "category_id" = 162;
    "category_image" = "nonalcoholic.png";
    "category_name" = "Non Alcoholic Coolers";
    sequance = 22;
    status = 0;
    "store_id" = 1;
}

这是nslog的服务器回复

这是我存储数据的数组的难点

2017-06-13 10:16:39.181 MenuBar[1703:94836] (
"kinfisherultra.png",
"impotedbeernew.png",
"blendedwhiskyne.png",
"johywalkerbluee.png",
"singlemaltnew.png",
"americanwishkynew.png",
"irishwishkynew.png",
"Belvedere-Vodka.png",
"Ginnew.png",
"Tequilanew.png",
"rumnew.png",
"amarula.png",
"aprities.png",
"breezernew1.png",
"conganbrndynew.png",
"wine&sparkling.png",
"bottels.png",
"cocktailpitchers.png",
"mocktails.png",
"shots.png",
"classiccocktail.png",
"sprit.png",
"nonalcoholic.png"

）

我有一个基本网址如何在集合视图中获取所有这些图片？

这是customcell.h文件

#import <UIKit/UIKit.h>

@interface CustomCell : UICollectionViewCell


@property (strong, nonatomic) IBOutlet UIImageView *imageView;
@property (strong, nonatomic) IBOutlet UILabel *lbl;



@end

customcell.h文件

#import "CustomCell.h"

@implementation CustomCell


-(void)awakeFromNib {
UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
[tap setNumberOfTapsRequired:1];
[self addGestureRecognizer:tap];
[super awakeFromNib];
}

-(void)onButtonTapped:(id)sender
{
//the response to the gesture.
//mind that this is done in the cell. If you don't want things to happen from this cell.
//then you can still activate this the way you did in your question.

}
@end

查看controller.hfile

 if(!sharedSessionMainQueue){
    sharedSessionMainQueue = [NSURLSession sessionWithConfiguration:nil delegate:nil delegateQueue:[NSOperationQueue mainQueue]];
}

 [[sharedSessionMainQueue dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    NSString *requestReply = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; // this is json string
    //  NSError *error;
    NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error]; // you need to convert to dictionary object
    NSDictionary *temp=jsonDict;
    NSLog(@"Req cust:%@",requestReply);
    NSLog(@"requestReply cust liqour category: %@", jsonDict);
    NSArray *imgNameArray = [temp valueForKey: @"category_name"];
    NSLog(@"$$$%@$$$",imgNameArray);
        self.iname=[jsonDict valueForKey:@"category_image"];
        NSLog(@"%@",self.iname);

            //[self imagedl];
    NSDictionary *tempz=[jsonDict valueForKey:@"category_name"];
            Photos = [NSArray arrayWithObjects:@"http://test.kre8tives.com/barebones/upload/%@",self.iname, nil];
    NSLog(@"^^^%@",tempz);


        //NSLog(@"$$%@",[Photos objectAtIndex:]); //Here can show Img's values correctl
   // }
   // self.recipeImageView.image = [UIImage imageNamed:self.recipeImageName];
}] resume];

    _barbutton.target = self.revealViewController;
    _barbutton.action = @selector(revealToggle:);
    //[self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"background"]];
    // Do any additional setup after loading the view, typically from a nib.
 }

-(void)geti{
    NSString  *temps= [NSString stringWithFormat:@"http://test.kre8tives.com/barebon/upload/%@",self.iname];
UIImage *temp;
[NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:temps]] queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
    NSLog(@"%@",response);
     //temp.image= [UIImage imageWithData:data];
    }];
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return 23;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
//[CustomCell registerClass:[CustomCell class] forCellWithReuseIdentifier:reuseIdentifier];


UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];

[[[cell contentView] subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];
UIView * contents=[[UIView alloc]      initWithFrame:cell.contentView.bounds];
[contents setBackgroundColor:[UIColor clearColor]];
[cell.contentView addSubview:contents];

_imageView.image;

// set tag to the indexPath.row so we can access it later
[cell setTag:indexPath.row];

// add interactivity
UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
[tap setNumberOfTapsRequired:1];
[cell addGestureRecognizer:tap];

NSString *fileName = [NSString stringWithFormat:@"%@",self.iname]; //objectAtIndex:indexPath];
NSLog(@"%@",fileName);
NSString *baseurl=[NSString stringWithFormat:@"http://test.kre8tives.com/barebon/upload/"];
NSDictionary *doors = [NSMutableArray new];
NSString *base=[NSString stringWithFormat:@"http://test.kre8tives.com/barebon/upload/"];

    NSLog(@"%@",doors);

NSString *path = [NSString stringWithFormat:@"%@/%@", baseurl, _iname];
NSURL *url = [NSURL URLWithString:path];
NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *imgage = [[UIImage alloc] initWithData:data];
//NSString *filePath = [baseurl stringByAppendingPathComponent:fileName];
NSDictionary *dict = self.iname[indexPath.row];
NSLog(@"%@", [self.iname objectAtIndex: indexPath.row]);


NSString *filePath=[NSString stringWithFormat:@"%@%@",baseurl,fileName];
NSString *paths = [NSString stringWithFormat:@"%@/%@", baseurl, [[dict valueForKey:@"category_image"] objectAtIndex: indexPath.row]];
NSLog(@"%@",dict);
NSString  *temps= [NSString stringWithFormat:@"%@",filePath];
[NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:paths]] queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
    NSLog(@"%@",response);

    UIImage *imgage = [[UIImage alloc] initWithData:data];
    _imageView.image=[[UIImage alloc] initWithData:imgage];

    _imageView.image=[[NSData alloc]initWithData:data];
    //imageView.contentMode = UIViewContentModeScaleAspectFill;
    // _imageView.clipsToBounds = YES;
    //imageView.tag = IMAGE_VIEW_TAG;
}];


if (cell.selected) {
    cell.backgroundColor = [UIColor blueColor]; // highlight selection
}
else
{

    cell.backgroundColor = [UIColor redColor]; // Default color
}
return cell;


}

Answer 1

    NSString *path = [NSString stringWithFormat:@"%@/%@", baseUrl, imageName];
    NSURL *url = [NSURL URLWithString:path];
    NSData *data = [NSData dataWithContentsOfURL:url];
    UIImage *imgage = [[UIImage alloc] initWithData:data];

将此图片传递给您的imageview。在从服务器加载图像时，您还可以使用SDWebImage进行图像缓存。 https://github.com/rs/SDWebImage

Answer 2

在viewDidLoad方法

中注册自定义单元格

[yourCollectionView registerNib:[UINib nibWithNibName:@"CustomCell" bundle:nil] forCellWithReuseIdentifier:@"your Cell Identifier"];

然后你会写cellForItemAtIndexPath方法

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *cellIdentifier = @"your Cell Identifier";
    CustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];

    NSDictionary *dict = imageAry[indexPath.row];
    //SdWebimage to load image 
    [cell.imgUser sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@/%@", baseUrl, dict[@"imageName"]]];


    return cell;
}

下载SDWebimageImageLoader以使用具有缓存支持的异步映像下载程序。

使用url iOS目标c追加数组

2 个答案: