如何在iOS中以阵列形式添加相机捕获图像

Question

要添加相机捕获的图像添加到数组中并将该数组加载到集合视图中以显示所有图像

///here i get the capture image in picker

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
      UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
      imagePicker.sourceType =  UIImagePickerControllerSourceTypePhotoLibrary;
       imagePicker.delegate = self;
       imagePicker.allowsEditing = YES;
       [self presentViewController:imagePicker animated:YES completion:nil];
 }


- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{

     // in this part how can add the camera capture image in array  
     // and load that array value in collection view..
}

帮助我如何实现这一目标...

Answer 1

我尚未测试我要写的内容，但是您可以尝试以下操作：

-(void)viewDidLoad {

   //declare before NSMutableArray *_mutableArray;
   _mutableArray = [[NSMutableArray alloc] init];
}

...

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
   //dismiss UIImagePickerController
   [picker dismissViewControllerAnimated:YES completion:Nil];

   //take image from info
   UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

   //store image into NSMutableArray
   [_mutableArray addObject:image];

   //reload collectionView
   [self.collectionView reloadData];
}

并在collectionView cellForItemAtIndexPath

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
   //this is a custom CollectionViewCell
   CollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];

   cell.imageA.image = [_mutableArray objectAtIndex:indexPath.row];

   return cell;

}