图像数据，iphone Base64的解码问题

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我从基地64 EN codeD串解码图像数据的一些问题。我使用从以下链接下载base64.h和基础64.m文件

I have some problem for decoding image data from base 64 encoded string. I am using base64.h and base 64.m files downloaded from the following link

cdn.imthi/ e6cef8 /可湿性粉剂内容/上传/ 2010/08 / base64.zip

这是我的code

[Base64 initialize]; NSData * data = [Base64 decode:imageString]; imgview.image=[UIImage imageWithData:data];

但是，没有在图像视图中显示，

but, nothing displayed in the image view ,

我测试由基64字符串（从调试器控制台获取）与网上基地64日codeR解码，它提供了正确的图像，我还通过将数据写入这样一个文件测试

I tested by decoding the base 64 string(taken from debugger console) with an online base 64 decoder,It gives correct image, I also tested by writing the data to a file like this

[data writeToFile:imagePath atomically:YES];

它给出​​了一个JPG文件，但我无法打开图片文件，它提供了错误信息像

it gives a jpg file but i can't open that image file, it gives error message like

文件test.jpg放在无法打开。

The file "test.jpg" could not be opened.

这可能会损坏或使用的文件格式，preVIEW不承认。什么是我的code中的问题谁能帮我.....

"It may be damaged or use a file format that Preview doesn’t recognize." What is the problem with my code Can anyone help me.....

感谢您

推荐答案

尝试不同的基本实施64，我用从一个讨论会的开源项目：

Try a different base 64 implementation, I use the one from colloquy open source project:

#import "NSDataAdditions.h" /* encoded string to image */ NSString *imageString = @""; NSData * data = [NSData dataWithBase64EncodedString:imageString]; UIImage *image1 = [UIImage imageWithData:data]; /* image to encoded string, back to image */ imageString = [UIImagePNGRepresentation(image) base64Encoding]; data = [NSData dataWithBase64EncodedString:imageString]; UIImage *image2 = [UIImage imageWithData:data];

获取 NSAdditions 文件：的 NSAdditions.h + NSAdditions。米