• 修改cell.imageView.frame大小
• UIView旋转
• Objective-C中的Literals
  
• 打印Rect, Size, Point
  

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修改cell.imageView.frame大小

The best way is to add -
(void)layoutSubviews to your cell subclass like this:

- (void)layoutSubviews {
    [super layoutSubviews];
    self.imageView.frame = CGRectMake(0.0f , 0.0f, 32.0f, 32.0f);
}

float rotateAngle = M_PI;    
 CGAffineTransform transform =CGAffineTransformMakeRotation(rotateAngle);    
 view.transform = transform;  

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Objective-C中的Literals

http://beyondvincent.com/blog/2014/01/23/guided-tour-through-objective-c-literals/

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打印Rect, Size, Point

    NSLog(@"%@", NSStringFromCGRect(rect));
    NSLog(@"%@", NSStringFromCGSize(size));
    NSLog(@"%@", NSStringFromCGPoint(point));