QMUIImagePreviewViewDelegate

@protocol QMUIImagePreviewViewDelegate <QMUIZoomImageViewDelegate>

@required
- (NSUInteger)numberOfImagesInImagePreviewView:(QMUIImagePreviewView *)imagePreviewView;
- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView renderZoomImageView:(QMUIZoomImageView *)zoomImageView atIndex:(NSUInteger)index;

@optional
// 返回要展示的媒体资源的类型（图片、live photo、视频），如果不实现此方法，则 QMUIImagePreviewView 将无法选择最合适的 cell 来复用从而略微增大系统开销
- (QMUIImagePreviewMediaType)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView assetTypeAtIndex:(NSUInteger)index;

/**
 *  当左右的滚动停止时会触发这个方法
 *  @param  imagePreviewView 当前预览的 QMUIImagePreviewView
 *  @param  index 当前滚动到的图片所在的索引
 */
- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView didScrollToIndex:(NSUInteger)index;

/**
 *  在滚动过程中，如果某一张图片的边缘（左/右）经过预览控件的中心点时，就会触发这个方法
 *  @param  imagePreviewView 当前预览的 QMUIImagePreviewView
 *  @param  index 当前滚动到的图片所在的索引
 */
- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView willScrollHalfToIndex:(NSUInteger)index;

@end

Undocumented


                    
                    
                    -numberOfImagesInImagePreviewView:

Undocumented

Declaration

Objective-C

- (NSUInteger)numberOfImagesInImagePreviewView:(QMUIImagePreviewView *)imagePreviewView;

Swift

func numberOfImages(in imagePreviewView: QMUIImagePreviewView!) -> UInt


                    
                    
                    -imagePreviewView:renderZoomImageView:atIndex:

Undocumented

Declaration

Objective-C

- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView renderZoomImageView:(QMUIZoomImageView *)zoomImageView atIndex:(NSUInteger)index;

Swift

func imagePreviewView(_ imagePreviewView: QMUIImagePreviewView!, renderZoomImageView zoomImageView: QMUIZoomImageView!, at index: UInt)


                    
                    
                    -imagePreviewView:assetTypeAtIndex:

Undocumented

Declaration

Objective-C

- (QMUIImagePreviewMediaType)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView assetTypeAtIndex:(NSUInteger)index;

Swift

optional func imagePreviewView(_ imagePreviewView: QMUIImagePreviewView!, assetTypeAt index: UInt) -> QMUIImagePreviewMediaType


                    
                    
                    -imagePreviewView:didScrollToIndex:

当左右的滚动停止时会触发这个方法

Declaration

Objective-C

- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView
        didScrollToIndex:(NSUInteger)index;

Swift

optional func imagePreviewView(_ imagePreviewView: QMUIImagePreviewView!, didScrollTo index: UInt)

Parameters

`imagePreviewView`	当前预览的 QMUIImagePreviewView
`index`	当前滚动到的图片所在的索引


                    
                    
                    -imagePreviewView:willScrollHalfToIndex:

在滚动过程中，如果某一张图片的边缘（左/右）经过预览控件的中心点时，就会触发这个方法

Declaration

Objective-C

- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView
    willScrollHalfToIndex:(NSUInteger)index;

Swift

optional func imagePreviewView(_ imagePreviewView: QMUIImagePreviewView!, willScrollHalfTo index: UInt)

Parameters

`imagePreviewView`	当前预览的 QMUIImagePreviewView
`index`	当前滚动到的图片所在的索引