如何比较两个UIImage对象 [英] How to compare two UIImage objects

问题描述

我正在开发一个应用程序。在我更改 UIImageview 图像之前，我正在使用 imageviews .SO需要在 UIimage obejct中获取该图像，并与另一个 UIImage 对象进行比较以查找是否为sam。所以请告诉我如何做到这一点。

I am developing one application.In that i am using the imageviews.SO before changeing the UIImageview image I need to take that image in UIimage obejct and compare with another UIImage object for finding both are sam or not. So please tell me how to do that one.

推荐答案

一种方法是首先将它们转换为图像数据，然后比较。

One way is to convert them to image data first, and then compare that.

- (BOOL)image:(UIImage *)image1 isEqualTo:(UIImage *)image2
{
    NSData *data1 = UIImagePNGRepresentation(image1);
    NSData *data2 = UIImagePNGRepresentation(image2);

    return [data1 isEqual:data2];
}

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