UIImageView 图片变模糊的原因
方法一:
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此时看看代码中是否用center来定位，如果用center来定位，会使图片边模糊，用frame,
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CGSize size = charImage.frame.size;charImage.frame = CGRectMake((int)(centerX - size.width / 2), (int)(centerY - size.height / 2), size.width, size.height);
?且把CGRectMake的第一个和第二个参数转成int类型。
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?.center?setter could set the origin to a non-integer point when either of the width or height is of the wrong parity. As other people have said here, images and text look blurry when they're at non-integer coordinates.
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方法二:
?将.center 的两个参数都转成int类型,如果图片还是很模糊,看看图片的长宽是否是奇数,如果是的话,将长宽+1,改成偶数.试试.
?参考自:your image dimensions are both odd (45), and setting the?center?property to an integer point means that your origin is offset to half a pixel (0.5). This will result in a blurry image every time. When setting the center, you must check each dimension and adjust by 0.5 if that dimension is odd.?
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http://stackoverflow.com/questions/1250674/why-is-my-uiimageview-blurred
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