调整TableViewController单元格的图像大小

Question

I would like to resize the image of all the TableView cells i have. I tried this method and it's working but the quality of the image is decreased.

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{ 
//...
         CGSize size = {35,35};
         cell.imageView.image = [self imageWithImage:[UIImage imageNamed:@"image.png"] scaledToSize:size];
//...

}   

//Given a UIImage and a CGSize, this method will return a resized UIImage.
    - (UIImage*)imageWithImage:(UIImage*)image
           scaledToSize:(CGSize)newSize;
    {
        UIGraphicsBeginImageContext( newSize );
        [image drawInRect:CGRectMake(0,0,35,35)];
        UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

        return newImage;
    }

So i continued searching and i found someone saying to add this method

- (void)layoutSubviews {
    [super layoutSubviews];
    self.imageView.frame = CGRectMake(0,0,35,35);
}

But Xcode gives me an error, is this method not available anymore?

How could i resize the image without losing quality?

Answer 1

I manage to find a solution, here i'll explain in case someone will need.

First create a fake image, something like a white image or clear

cell.imageView.image = [UIImage imageNamed:@"clear.png"];

That's why you have to tell the cell there's an image. Now add an ImageView as a subview of the TableView cell

UIImageView *imgView=[[UIImageView alloc] initWithFrame:CGRectMake(20, 5, 35, 35)];
                imgView.backgroundColor=[UIColor clearColor];
                [imgView.layer setCornerRadius:8.0f];
                [imgView.layer setMasksToBounds:YES];
                [imgView setImage:[UIImage imageNamed:account.icon]];
                [cell.contentView addSubview:imgView];

Now it's good. If you don't create the fake image the new created imgView will overlap the cell.textLabel.text