UIImageView控件怎么让超出控件范围的图像信息隐藏

Question

为什么在storyboard里面都是隐藏的，但是编译之后还是显示出来了？
UIImageView能用来做sprite吗？

Answer 1

imageView.clipsToBounds = YES;

have a try

想修改图片于View的相对坐标，可以增加一个CALayer用于存放图片，或者索性将一个UIImageView *a作为另一个UIView *b的subview，然后调整a的frame。
下面代码示范了如何使用CAlayer做到修改图片坐标
此类继承自UIView，setImageFrame方法可以修改图片相对于View的坐标或大小等。

//
//  OTImageView.m
//  ClipDemo
//
//  Created by openthread on 5/31/12.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//

#import "OTImageView.h"
#import <QuartzCore/QuartzCore.h>

@implementation OTImageView
{
    CALayer *_imageLayer;
}

#pragma mark - Image Methods

- (UIImage *)image
{
    CGImageRef imageRef = (__bridge CGImageRef)_imageLayer.contents;
    UIImage *image = [UIImage imageWithCGImage:imageRef];
    return image;
}

- (void)setImage:(UIImage *)image
{
    CGImageRef imageRef = image.CGImage;
    _imageLayer.contents = (__bridge id)imageRef;
}

#pragma mark - Frame Methods

- (void)setImageFrame:(CGRect)imageFrame
{
    _imageLayer.frame = imageFrame;
}

#pragma mark Life Cycle

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        _imageLayer = [CALayer layer];
        _imageLayer.backgroundColor = [UIColor blueColor].CGColor;
        _imageLayer.frame = CGRectMake(0, 0, frame.size.width, frame.size.height);
        [self.layer addSublayer:_imageLayer];
    }
    return self;
}


@end