How do I make UITableViewCell's ImageView a fixed size even when the image is smaller

It's not necessary to rewrite everything. I recommend doing this instead:

Post this inside your .m file of your custom cell.

- (void)layoutSubviews {    [super layoutSubviews];    self.imageView.frame = CGRectMake(0,0,32,32);}

This should do the trick nicely. :]

For those of you who don't have a subclass of UITableViewCell:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { [...]      CGSize itemSize = CGSizeMake(40, 40);      UIGraphicsBeginImageContextWithOptions(itemSize, NO, UIScreen.mainScreen.scale);      CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);      [cell.imageView.image drawInRect:imageRect];      cell.imageView.image = UIGraphicsGetImageFromCurrentImageContext();      UIGraphicsEndImageContext(); [...]     return cell;}

The code above sets the size to be 40x40.

Swift 2

    let itemSize = CGSizeMake(25, 25);    UIGraphicsBeginImageContextWithOptions(itemSize, false, UIScreen.mainScreen().scale);    let imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);    cell.imageView?.image!.drawInRect(imageRect)    cell.imageView?.image! = UIGraphicsGetImageFromCurrentImageContext();    UIGraphicsEndImageContext();

Or you can use another(not tested) approach suggested by @Tommy:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { [...]      CGSize itemSize = CGSizeMake(40, 40);      UIGraphicsBeginImageContextWithOptions(itemSize, NO, 0.0)           [...]     return cell;}

Swift 3+

let itemSize = CGSize.init(width: 25, height: 25)UIGraphicsBeginImageContextWithOptions(itemSize, false, UIScreen.main.scale);let imageRect = CGRect.init(origin: CGPoint.zero, size: itemSize)cell?.imageView?.image!.draw(in: imageRect)cell?.imageView?.image! = UIGraphicsGetImageFromCurrentImageContext()!;UIGraphicsEndImageContext();

The code above is the Swift 3+ version of the above.

Here's how i did it. This technique takes care of moving the text and detail text labels appropriately to the left:

@interface SizableImageCell : UITableViewCell {}@end@implementation SizableImageCell- (void)layoutSubviews {    [super layoutSubviews];    float desiredWidth = 80;    float w=self.imageView.frame.size.width;    if (w>desiredWidth) {        float widthSub = w - desiredWidth;        self.imageView.frame = CGRectMake(self.imageView.frame.origin.x,self.imageView.frame.origin.y,desiredWidth,self.imageView.frame.size.height);        self.textLabel.frame = CGRectMake(self.textLabel.frame.origin.x-widthSub,self.textLabel.frame.origin.y,self.textLabel.frame.size.width+widthSub,self.textLabel.frame.size.height);        self.detailTextLabel.frame = CGRectMake(self.detailTextLabel.frame.origin.x-widthSub,self.detailTextLabel.frame.origin.y,self.detailTextLabel.frame.size.width+widthSub,self.detailTextLabel.frame.size.height);        self.imageView.contentMode = UIViewContentModeScaleAspectFit;    }}@end...- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    static NSString *CellIdentifier = @"Cell";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];    if (cell == nil) {        cell = [[[SizableImageCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;    }    cell.textLabel.text = ...    cell.detailTextLabel.text = ...    cell.imageView.image = ...    return cell;}