将 UIImagePickerViewController 中的图像添加到 UITableViewCell 内的 UICollectionView

Question

首先，很抱歉我的长问题。
我正在创建一个带有 UICollectionView 的自定义 UITableViewCell 。每当用户选择此单元格时，都会出现 UIImagePickerController，现在我想将 UIImagePickerController 中的所有选定图像传递到我的自定义单元格内的 UICollectionView 中。
我已完成显示图像选择器，现在我的问题是在集合视图中显示选定的图像。
我怎样才能做到？
我的代码：

SHImageUploadCell.h

#import <UIKit/UIKit.h>
@class SHImageUploadCell;
@protocol SHImagUploadDelegate<NSObject>
@optional
- (void)closeImage:(SHImageUploadCell*)cell;
@end
@interface SHImageUploadCell : UICollectionViewCell
@property (weak, nonatomic) IBOutlet UIImageView *imgUpload;
@property (strong,nonatomic) id<SHImagUploadDelegate> delegate;
@property(nonatomic) int imageIndex;
@property (weak, nonatomic) IBOutlet UIImageView *bugImage;

@end

SHImageUploadCell.m

#import "SHImageUploadCell.h"

@implementation SHImageUploadCell
- (IBAction)bntDeleteImageClick:(id)sender {


    NSDictionary* userInfo = @{@"index": @(self.imageIndex)};

    NSLog(@"%d", self.imageIndex);
    if (_delegate) {
        [_delegate closeImage:self];
    }
}

@end

MyCustomCell.h

#import <UIKit/UIKit.h>

@interface SHPhotoPickerViewCell : UITableViewCell
@property (weak, nonatomic) IBOutlet UICollectionView *photoCollection;
@property (strong, nonatomic) NSMutableArray *listImage;
@end

MyCustomCell.m

#import "SHPhotoPickerViewCell.h"
#import "SHImageUploadCell.h"

@interface SHPhotoPickerViewCell ()<UICollectionViewDataSource, UICollectionViewDelegate, SHImagUploadDelegate>

@end

@implementation SHPhotoPickerViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
    [self.photoCollection registerClass:[SHImageUploadCell class] forCellWithReuseIdentifier:@"selectedCell"];
    [self.photoCollection registerNib:[UINib nibWithNibName:@"SHImageUploadCell" bundle:[NSBundle mainBundle]] forCellWithReuseIdentifier:@"selectedCell"];
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

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

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    SHImageUploadCell *uploadCell = [collectionView dequeueReusableCellWithReuseIdentifier:@"uploadCell" forIndexPath:indexPath];
    uploadCell.imgUpload.image = [UIImage imageWithData: self.listImage[indexPath.row]];
    uploadCell.imageIndex = (int)indexPath.row;
    uploadCell.delegate=self;
    return uploadCell;
}

@end

处理单元格选择：

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == 4){
   UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
   imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
   imagePickerController.delegate = self;
   [self presentViewController:imagePickerController animated:YES completion:nil];
    }
  }
}

UIImagePickerController 委托：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    SHPhotoPickerViewCell *photoPickerCell = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:self.pickerCellIndexPath.row inSection:1]];
    UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
    image = [SHHelper resizeImageWithImage:image toSize:CGSizeMake(480, 320)];
    NSData *imageData = UIImageJPEGRepresentation(image, 0.7);
    photoPickerCell.listImage = [NSMutableArray new];
    [photoPickerCell.listImage addObject:imageData];

    [photoPickerCell.photoCollection reloadData];

    [picker dismissViewControllerAnimated:YES completion:^{

    }];


}

Answer 1

试试这个：

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

    id object = [listImage objectAtIndex:indexPath.row];
    if ([object isKindOfClass:[UIImage class]]) {
        uploadCell.imgUpload.image = (UIImage *)object;
    }
    else{
       uploadCell.imgUpload.image = [UIImage imageWithData: object];
    }

       return uploadCell;
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
    [listImage addObject:image]; // here add image which you selected
     // reload tableview
     // reload collection view
    [picker dismissViewControllerAnimated:YES completion:^{

    }];


}