如何在Xcode中顯示所選圖像？

Question

JSON地址：

{ 
     "status": "200", 
     "requestType": "productDisplay", 
     "basePath": "http:\/\/192.168.0.33\/cartwebsite3\/", 
     "bannerPath": "http:\/\/192.168.0.33\/cartwebsite3\/cdn-images\/banner\/", 
     "productPath": "http:\/\/192.168.0.33\/cartwebsite3\/cdn-images\/prd\/", 
     "response": { 
      "data": [{ 
       "product_id": "3", 
       "seller_id": "1", 
       "product_active": "on", 
       "product_name": "Micromax Unite 3", 
       "product_alias": "(Blue, 8 GB)", 
       "product_sku": "21334", 
       "product_manufacturer_country": "India", 
       "product_manufacturer": "india", 
       "product_min_add": "1", 
       "product_max_add": "100", 
       "short_description": "Slim, compact and user-friendly, the Micromax Unite 3 is a good combination of powerful performance and nifty features for a great smartphone experience.", 
       "long_description": "Slim, compact and user-friendly, the Micromax Unite 3 is a good combination of powerful performance and nifty features for a great smartphone experience.", 
       "product_quantity": "0", 
       "quantity": "100", 
       "status": "In Stock", 
       "price_id": "4", 
       "mrp_price": "5900.0000", 
       "selling_price": "5099.0000", 
       "offer_percentage": "", 
       "product_weight": "130g", 
       "offer_selling_price": "2000.0000", 
       "offer_selling_percentage": "", 
       "offer_selling_start_date": "1461621600", 
       "offer_selling_end_date": "1469484000", 
       "shipping_cost": "0.0000", 
       "product_images": [{ 
        "image_id": "18", 
        "product_id": "3", 
        "image_small": "", 
        "image_medium": "", 
        "image_large": "", 
        "original_res": "micromax-unite-3-951452579749.jpeg", 
        "image_type": "jpeg", 
        "added_date": "1452579749", 
        "added_user": "1", 
        "sort": "0" 
       }, { 
        "image_id": "19", 
        "product_id": "3", 
        "image_small": "", 
        "image_medium": "", 
        "image_large": "", 
        "original_res": "micromax-unite-3-241452579749.jpeg", 
        "image_type": "jpeg", 
        "added_date": "1452579749", 
        "added_user": "1", 
        "sort": "0" 
       }, { 
        "image_id": "20", 
        "product_id": "3", 
        "image_small": "", 
        "image_medium": "", 
        "image_large": "", 
        "original_res": "micromax-unite-3-301452579749.jpeg", 
        "image_type": "jpeg", 
        "added_date": "1452579749", 
        "added_user": "1", 
        "sort": "0" 
       }], 
       "basic_info": [{ 
        "basic_id": "550", 
        "product_id": "3", 
        "option_name": "Features", 
        "option_description": "Android v5 OS", 
        "have_connected": "0" 
       }, { 
        "basic_id": "551", 
        "product_id": "3", 
        "option_name": "Features", 
        "option_description": "8 MP Primary Camera", 
        "have_connected": "0" 
       }, { 
        "basic_id": "552", 
        "product_id": "3", 
        "option_name": "Features", 
        "option_description": "2MP Secondary Camera", 
        "have_connected": "0" 
       }, { 
        "basic_id": "553", 
        "product_id": "3", 
        "option_name": "Features", 
        "option_description": "Dual Sim (GSM WCDMA)", 
        "have_connected": "0" 
       }], 
       "extra_info": [{ 
        "type": "textfield", 
        "main_header": "Micromax Unite 3(Blue, 8 GB)", 
        "field_option": [{ 
         "inside_single_title": "Specifications", 
         "basic_opt1": [{ 
          "option_name_extra": "In the Box", 
          "option_desc_extra": "Handset, USB Cable, Charger, User Guide, Warranty Card, Battery, Hands-free" 
         }, { 
          "option_name_extra": "Sensors", 
          "option_desc_extra": "Light Sensor, Gravity Sensor, Proximity Sensor" 
         }, { 
          "option_name_extra": "User Memory\t", 
          "option_desc_extra": "4.9 GB for Apps and Phone Storage" 
         }, { 
          "option_name_extra": "Processor", 
          "option_desc_extra": "1.3 GHz MTK 6582M, Quad Core" 
         }] 
        }] 
       }], 
       "category_list": [{ 
        "category_id": "46", 
        "category_name": "ELECTRONICS", 
        "category_desc": "", 
        "category_image": "", 
        "category_thumbnail": "", 
        "category_image_desc": "", 
        "category_meta_title": "", 
        "category_meta_desc": "", 
        "category_meta_keyword": "", 
        "category_show_hide": "0", 
        "category_vanity": "electronics" 
       }, { 
        "category_id": "48", 
        "category_name": "Mobiles", 
        "category_desc": "", 
        "category_image": "", 
        "category_thumbnail": "", 
        "category_image_desc": "", 
        "category_meta_title": "", 
        "category_meta_desc": "", 
        "category_meta_keyword": "", 
        "category_show_hide": "0", 
        "category_vanity": "mobiles" 
       }, { 
        "category_id": "54", 
        "category_name": "Micromax", 
        "category_desc": "", 
        "category_image": "", 
        "category_thumbnail": "", 
        "category_image_desc": "", 
        "category_meta_title": "", 
        "category_meta_desc": "", 
        "category_meta_keyword": "", 
        "category_show_hide": "0", 
        "category_vanity": "micromax" 
       }] 
      }] 
     }, 
     "request": { 
      "postData": [], 
      "getData": { 
       "type": "productDisplay", 
       "result": "json", 
       "product_id": "3" 
      } 
     } 
    } 

代碼：

-(void)navigateToNextPage :(UITapGestureRecognizer *)gest{ 

    UIImageView *theTappedImageView = (UIImageView *)gest.view; 
    NSInteger index = theTappedImageView.tag; 

    ViewController *orderView=[[ViewController alloc]initWithNibName:@"ViewController" bundle:nil]; 
    [self.navigationController pushViewController:orderView animated:YES]; 
    self.imgName.image = [imgid objectAtIndex:index]; 

// orderView.stringcell=[product_id objectAtIndex:index]; 




} 

如何在Xcode顯示相同的圖像所選擇的圖像。圖像已被點擊，但圖像不顯示在輸出中。

Answer 1

ViewController.h

@interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegateFlowLayout> 
{ 
    UICollectionView *_collectionView; 
} 

@end 

ViewController.m

@interface ViewController() 
{ 
    NSArray *imagesArr; 
    UIImageView *mainImageView; 
} 
@end 

@implementation ViewController 

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 


    imagesArr = [NSArray arrayWithObjects:@"sample1.jpeg", @"sample2.jpeg", nil]; 


    mainImageView = [[UIImageView alloc] init]; 
    mainImageView.frame = CGRectMake(10, 10, 300, 300); 
    mainImageView.image = [UIImage imageNamed:[imagesArr objectAtIndex:0]]; 
    [self.view addSubview:mainImageView]; 


    UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc] init]; 
    _collectionView=[[UICollectionView alloc] initWithFrame:CGRectMake(0, [[UIScreen mainScreen] bounds].size.height - 60, [[UIScreen mainScreen] bounds].size.width, 60) collectionViewLayout:layout]; 
    [_collectionView setDataSource:self]; 
    [_collectionView setDelegate:self]; 

    [_collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cellIdentifier"]; 
    [_collectionView setBackgroundColor:[UIColor redColor]]; 

    [self.view addSubview:_collectionView]; 
} 


- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section 
{ 
    return imagesArr.count; 
} 

// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath: 
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"cellIdentifier" forIndexPath:indexPath]; 


    UIImageView *imgView = [[UIImageView alloc] init]; 
    imgView.frame = CGRectMake(0, 5, 50, 50); 
    imgView.image = [UIImage imageNamed:[imagesArr objectAtIndex:indexPath.row]]; 
    [cell addSubview:imgView]; 

    return cell; 
} 

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
    return CGSizeMake(50, 50); 
} 

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{ 
    NSLog(@"%@",[imagesArr objectAtIndex:indexPath.row]); 
    mainImageView.image = [UIImage imageNamed:[imagesArr objectAtIndex:indexPath.row]]; 
} 

這僅僅是一個示例代碼。替換/分配「imagesArr」到你的圖像數組。

希望這會有所幫助。