Iphone 使矩形等于图像视图

我有一个图像视图。我需要将imageView的大小限制为仅白色背景图像。图像在右、左和上边距之间紧密绑定。我不知道如何做在底部，这样的图像必须适合在白色背景只。我该怎么做？

我正在使用的代码

 _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(25, 240,175,205)];

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框架宽度和高度为205*205

只需创建一个视图并将此图像添加到其中，例如使用下面的代码

 UIView *ImageBackview = [[UIView alloc]initWithFrame:CGRectMake(25, 240,225,225)];
_imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10,205,205)];
[ImageBackview addSubview:_imageView];
[self.view addSubview:ImageBackview];

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可以将imageView添加为白色背景视图的子视图

UIView *whiteBackgroundView = [[UIView alloc] initWithFrame:CGRectMake(25,240,205,205)];
CGSize whiteSize = whiteBackgroundView.frame.size;
_imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0,size.width,size.height)];
[whiteBackgroundView addSubview:_imageView];

在本例中，您的图像视图将完全适合白色背景视图的大小。

试试这个

UIView *productView  = [[UIView alloc]initWithFrame:CGRectMake(25, 240,225,225)];
    _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10,205,205)];
    _imageView.clipsToBounds =YES;
    [productView addSubview:_imageView];
    [self.view addSubview:ImageBackview];