从URL Phonegap Iphone保存图像 [英] Save image from URL Phonegap Iphone

问题描述

我google了很多，但我找不到一个解决方案。

我需要一些方法来保存网络上的图片在我的应用程序。像一个函数，其中我可以只是把url，它会下载它：

ie

  DownloadPhoto（'http://www.myserver.com/myphoto.jpg'）; 
  

是否有这样的东西？

解决方案

这应该做的

   - （void）downloadPhoto：（NSString *）urlToDownloadFrom 
 {
 //下载图片。现在downloadeImg有你想要的img。 
 UIImage * downloadedImg = [UIImage imageWithData：[NSData dataWithContentsOfURL：
 [NSURL URLWithString：urlToDownloadFrom]]]; 
 
 UIImageWriteToSavedPhotosAlbum（downloadedImg，self，
 @selector（savedPhotoImage：didFinishSavingWithError：contextInfo :)，NULL）; 
 //将图像保存到您的Photos.app/directory并调用savedPhotoImage fucn。不清楚如果你实际需要这个功能。 
  

}

   - （void）savedPhotoImage：（UIImage *）imagedidFinishSavingWithError：（NSError *）errorcontextInfo：（void *）contextInfo 
 {
} 
  pre> 
I googled a lot, but I couldnt find a solution.

I need some way to save pictures from the web on my application. Like a function, where I can just put the url and it will download it:

i.e 
DownloadPhoto('http://www.myserver.com/myphoto.jpg');
Is there something like this?
解决方案
This should do the trick
- (void)downloadPhoto:(NSString*)urlToDownloadFrom
{
    // Download the image. now downloadeImg has the img you want.
    UIImage *downloadedImg = [UIImage imageWithData: [NSData dataWithContentsOfURL:
                               [NSURL URLWithString: urlToDownloadFrom]]];

    UIImageWriteToSavedPhotosAlbum(downloadedImg,self,
                         @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:),NULL);
   // saves the image into your Photos.app/directory and calls the savedPhotoImage fucn. Am unclear if you actually needed this function. 
}        
-(void)savedPhotoImage:(UIImage *)imagedidFinishSavingWithError:(NSError *)errorcontextInfo:(void *)contextInfo
{
}


                        
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