// 每一個圖片控件對象, 對一一對應 KNPhotoItems ,再將多個KNPhotoItems 對象放入數(shù)組
KNPhotoItems *items = [[KNPhotoItems alloc] init];
items.url = [urlArr[i] stringByReplacingOccurrencesOfString:@"thumbnail" withString:@"bmiddle"];
items.sourceView = imageView;

KNPhotoBrower *photoBrower = [[KNPhotoBrower alloc] init];
photoBrower.itemsArr = [_itemsArray copy];// KNPhotoItems對象的數(shù)組
photoBrower.currentIndex = tap.view.tag;// 當前點擊的哪個圖片
photoBrower.actionSheetArr = [self.actionSheetArray mutableCopy];//設置 ActionSheet的選項
[photoBrower present];// 顯示

/* PhotoBrower 即將消失 */
- (void)photoBrowerWillDismiss;
/* PhotoBrower 右上角按鈕的點擊 */
- (void)photoBrowerRightOperationActionWithIndex:(NSInteger)index;
/* PhotoBrower 保存圖片是否成功 */
- (void)photoBrowerWriteToSavedPhotosAlbumStatus:(BOOL)success;

/**
 * 是否需要右上角的按鈕. Default is YES;
 */
@property (nonatomic, assign) BOOL isNeedRightTopBtn;
/**
 * 是否需要 頂部 1 / 9 控件 ,Default is YES
 */
@property (nonatomic, assign) BOOL isNeedPageNumView;
/**
 * 是否需要 底部 UIPageControl, Default is NO
 */
@property (nonatomic, assign) BOOL isNeedPageControl;
/**
 * 存放 ActionSheet 彈出框的內(nèi)容 :NSString類型
 */
@property (nonatomic, strong) NSMutableArray *actionSheetArr;

#pragma mark - 右上角 按鈕的點擊
- (void)operationBtnIBAction{
 __weak typeof(self) weakSelf = self;

 if(_actionSheetArr.count != 0){ // 如果是自定義的 選項

  KNActionSheet *actionSheet = [[KNActionSheet alloc] initWithCancelBtnTitle:nil destructiveButtonTitle:nil otherBtnTitlesArr:[_actionSheetArr copy] actionBlock:^(NSInteger buttonIndex) {

   // 讓代理知道 是哪個按鈕被點擊了
   if([weakSelf.delegate respondsToSelector:@selector(photoBrowerRightOperationActionWithIndex:)]){
    [weakSelf.delegate photoBrowerRightOperationActionWithIndex:buttonIndex];
   }

#warning 如果傳入的 ActionSheetArr 有下載圖片這一選項. 則在這里調(diào)用和下面一樣的方法 switch.....,如果沒有下載圖片,則通過代理方法去實現(xiàn)... 目前不支持刪除功能

  }];
  [actionSheet show];
 }else{
  KNActionSheet *actionSheet = [[KNActionSheet alloc] initWithCancelBtnTitle:nil destructiveButtonTitle:nil otherBtnTitlesArr:@[@"保存圖片",@"轉(zhuǎn)發(fā)微博",@"贊"] actionBlock:^(NSInteger buttonIndex) {

   // 讓代理知道 是哪個按鈕被點擊了
   if([weakSelf.delegate respondsToSelector:@selector(photoBrowerRightOperationActionWithIndex:)]){
    [weakSelf.delegate photoBrowerRightOperationActionWithIndex:buttonIndex];
   }

   switch (buttonIndex) {
    case 0:{
     SDWebImageManager *mgr = [SDWebImageManager sharedManager];
     KNPhotoItems *items = _itemsArr[_currentIndex];
     if(![mgr diskImageExistsForURL:[NSURL URLWithString:items.url]]){
      [[KNToast shareToast] initWithText:@"圖片需要下載完成"];
      return ;
     }else{
      UIImage *image = [[mgr imageCache] imageFromDiskCacheForKey:items.url];
      dispatch_async(dispatch_get_main_queue(), ^{
       UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
      });
     }
    }
    default:
     break;
   }
  }];
  [actionSheet show];
 }
}