FWImagePickerPreviewControllerDelegate

@protocol FWImagePickerPreviewControllerDelegate <NSObject>

@optional

/// 完成选中图片回调，未实现时自动转发给当前imagePickerController
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController didFinishPickingImageWithImagesAssetArray:(NSArray<FWAsset *> *)imagesAssetArray;
/// 即将选中图片
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController willCheckImageAtIndex:(NSInteger)index;
/// 已经选中图片
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController didCheckImageAtIndex:(NSInteger)index;
/// 即将取消选中图片
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController willUncheckImageAtIndex:(NSInteger)index;
/// 已经取消选中图片
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController didUncheckImageAtIndex:(NSInteger)index;
/// 选中数量变化时调用，仅多选有效
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController willChangeCheckedCount:(NSInteger)checkedCount;
/// 即将需要显示 Loading 时调用
- (void)imagePickerPreviewControllerWillStartLoading:(FWImagePickerPreviewController *)imagePickerPreviewController;
/// 即将需要隐藏 Loading 时调用
- (void)imagePickerPreviewControllerDidFinishLoading:(FWImagePickerPreviewController *)imagePickerPreviewController;
/// 已经选中数量超过最大选择数量时被调用，默认弹窗提示
- (void)imagePickerPreviewControllerWillShowExceed:(FWImagePickerPreviewController *)imagePickerPreviewController;
/// 图片预览界面关闭返回时被调用
- (void)imagePickerPreviewControllerDidCancel:(FWImagePickerPreviewController *)imagePickerPreviewController;
/// 自定义编辑按钮点击事件，启用编辑时生效，未实现时使用图片裁剪控制器
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController willEditImageAtIndex:(NSInteger)index;
/// 自定义图片裁剪控制器，启用编辑时生效，未实现时使用默认配置
- (FWImageCropController *)imageCropControllerForPreviewController:(FWImagePickerPreviewController *)previewController image:(UIImage *)image;
/// 自定义编辑cell展示，cellForRow自动调用
- (void)imagePickerPreviewController:(FWImagePickerPreviewController *)imagePickerPreviewController customCell:(FWImagePickerPreviewCollectionCell *)cell atIndexPath:(NSIndexPath *)indexPath;

@end

Undocumented


                    
                    
                    -imagePickerPreviewController:didFinishPickingImageWithImagesAssetArray:

完成选中图片回调，未实现时自动转发给当前imagePickerController

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
    didFinishPickingImageWithImagesAssetArray:
        (nonnull NSArray<FWAsset *> *)imagesAssetArray;


                    
                    
                    -imagePickerPreviewController:willCheckImageAtIndex:

即将选中图片

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
               willCheckImageAtIndex:(NSInteger)index;


                    
                    
                    -imagePickerPreviewController:didCheckImageAtIndex:

已经选中图片

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
                didCheckImageAtIndex:(NSInteger)index;


                    
                    
                    -imagePickerPreviewController:willUncheckImageAtIndex:

即将取消选中图片

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
             willUncheckImageAtIndex:(NSInteger)index;


                    
                    
                    -imagePickerPreviewController:didUncheckImageAtIndex:

已经取消选中图片

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
              didUncheckImageAtIndex:(NSInteger)index;


                    
                    
                    -imagePickerPreviewController:willChangeCheckedCount:

选中数量变化时调用，仅多选有效

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
              willChangeCheckedCount:(NSInteger)checkedCount;


                    
                    
                    -imagePickerPreviewControllerWillStartLoading:

即将需要显示 Loading 时调用

Declaration

Objective-C

- (void)imagePickerPreviewControllerWillStartLoading:
    (nonnull FWImagePickerPreviewController *)imagePickerPreviewController;


                    
                    
                    -imagePickerPreviewControllerDidFinishLoading:

即将需要隐藏 Loading 时调用

Declaration

Objective-C

- (void)imagePickerPreviewControllerDidFinishLoading:
    (nonnull FWImagePickerPreviewController *)imagePickerPreviewController;

-imagePickerPreviewControllerWillShowExceed:
已经选中数量超过最大选择数量时被调用，默认弹窗提示
Declaration
Objective-C

- (void)imagePickerPreviewControllerWillShowExceed: (nonnull FWImagePickerPreviewController *)imagePickerPreviewController;


                    
                    
                    -imagePickerPreviewControllerDidCancel:

图片预览界面关闭返回时被调用

Declaration

Objective-C

- (void)imagePickerPreviewControllerDidCancel:
    (nonnull FWImagePickerPreviewController *)imagePickerPreviewController;


                    
                    
                    -imagePickerPreviewController:willEditImageAtIndex:

自定义编辑按钮点击事件，启用编辑时生效，未实现时使用图片裁剪控制器

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
                willEditImageAtIndex:(NSInteger)index;


                    
                    
                    -imageCropControllerForPreviewController:image:

自定义图片裁剪控制器，启用编辑时生效，未实现时使用默认配置

Declaration

Objective-C

- (nonnull FWImageCropController *)
    imageCropControllerForPreviewController:
        (nonnull FWImagePickerPreviewController *)previewController
                                      image:(nonnull UIImage *)image;


                    
                    
                    -imagePickerPreviewController:customCell:atIndexPath:

自定义编辑cell展示，cellForRow自动调用

Declaration

Objective-C

- (void)imagePickerPreviewController:(nonnull FWImagePickerPreviewController *)
                                         imagePickerPreviewController
                          customCell:
                              (nonnull FWImagePickerPreviewCollectionCell *)cell
                         atIndexPath:(nonnull NSIndexPath *)indexPath;