單擊圖像瀏覽彈出一個視圖顯示原始圖像

我已經加載了幾個圖像到一個表視圖。圖像已被調整大小，我希望當用戶點擊圖像視圖時，它會彈出一個顯示原始圖像大小的視圖，並且當用戶再次單擊任何地方時，視圖消失並返回到tableview。加載圖像的代碼如下：單擊圖像瀏覽彈出一個視圖顯示原始圖像

- (UITableViewCell *)tableView:(UITableView *)atableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *cellIdentifier = @"Cell"; 
    SearchCell *cell = (SearchCell *)[atableView dequeueReusableCellWithIdentifier:cellIdentifier]; 
    if (!cell) { 
     cell = [[[NSBundle mainBundle] loadNibNamed:@"SearchCell" owner:self options:nil] objectAtIndex:0]; 
    } 

    cell.selectionStyle = UITableViewCellSelectionStyleNone; 

    cell.name.text = [[self.brands objectAtIndex:indexPath.row] objectForKey:@"name"]; 

    __weak SearchCell *weakCell = cell; 
    [cell.leftImageView setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://s-57130.gotocdn.com/%@", [[self.brands objectAtIndex:indexPath.row] objectForKey:@"pic"]]]] placeholderImage:[UIImage imageNamed:@"app_icon.png"] success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) { 

     CGFloat imageHeight = image.size.height; 
     CGFloat imageWidth = image.size.width; 

     CGSize targetSize = CGSizeMake(70, 70); 
     CGSize newSize = targetSize; 
     CGFloat scaleFactor = targetSize.width/imageWidth; 
     newSize.height = imageHeight * scaleFactor; 

     UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0); 
     [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; 
     UIImage *small = UIGraphicsGetImageFromCurrentImageContext(); 
     UIGraphicsEndImageContext(); 

     weakCell.imageView.image = small; 

    } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) { 

    }]; 
    return cell; 
}

來源

2013-04-18 yong ho

無需手動調整圖像大小。如果將imageViewcontentMode屬性設置爲UIViewContentModeScaleAspectFill，它將自動縮放以適合圖像視圖的大小。

至於縮放水龍頭，檢查出UIImageViewModeScaleAspect。

來源

2013-05-26 18:07:56 mattt

單擊圖像瀏覽彈出一個視圖顯示原始圖像

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