如何將圖像從集合視圖傳遞到iphone中的詳細視圖

Question

從遠程XML檢索數據，我可以在集合視圖中顯示圖像。從這個集合視圖我試圖顯示一個詳細的視圖控制器，如果在集合視圖控制器中單擊圖像，它應該在詳細視圖中顯示圖像。我被困在這裏，我無法顯示詳細視圖控制器。我哪裏錯了？請引導我。

下面是我收集的視圖控制器，

- (void)viewDidLoad 
    { 
    [super viewDidLoad]; 
    xmlParser = [[MyXMLParser alloc] loadXMLByURL:@"http://MyXml.com/sample.xml"]; 
    myarray = xmlParser.arrayofimages; 
    } 

-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView 
    { 
    return 1; 
    } 

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section 
    { 
    return [myarray count]; 
    } 

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
    { 
    MyCollectionViewCell *myCell = [collectionView dequeueReusableCellWithReuseIdentifier:@"MyCell" forIndexPath:indexPath]; 
    if (!myCell) { 
     myCell = [[MyCollectionViewCell alloc] initWithFrame:CGRectMake(0,0,myCell.frame.size.width , myCell.frame.size.height)]; 
    } 
    [myCell.tweetImageView setImage:[myarray objectAtIndex:indexPath.row]]; 
    return myCell; 
    } 

- (void)collectionView:(UICollectionViewCell *)collectionView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
    { 
    DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:@"MyCell" bundle:[NSBundle mainBundle]]; 
    detailVC.img= [myarray objectAtIndex: indexPath.row]; 
    [self presentViewController:detailVC animated:YES completion:nil]; 
    } 

的DetailView控制器

-(void)viewDidLoad 
    { 
    [super viewDidLoad]; 
    self.imageView.image = self.img; 
    } 

Answer 1

嘗試收集視圖控制器，

[self.navigationController pushViewController:detailVC animated:YES]; 

你已經錯過了這條線。

Answer 2

您沒有呈現您的detailview控制器。你只是分配它。

相反的：

- (void)collectionView:(UICollectionViewCell *)collectionView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
    { 
    DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:@"MyCell" bundle:[NSBundle mainBundle]]; 
    detailVC.img= [myarray objectAtIndex: indexPath.row]; 
    } 

檢查：

- (void)collectionView:(UICollectionViewCell *)collectionView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
    { 
    DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:@"MyCell" bundle:[NSBundle mainBundle]]; 
    detailVC.img= [myarray objectAtIndex: indexPath.row]; 
    [self presentViewController:detailVC animated:YES completion:nil]; 
    } 

Answer 3

試試這個。呈現視圖

DetailViewController *detailVC = [[DetailViewController alloc] initWithNibName:@"MyCell" bundle:[NSBundle mainBundle]]; 
     [self presentViewController:detailVC animated:YES completion:nil]; 
    detailVC.img= [myarray objectAtIndex: indexPath.row];