将XML文件从服务器复制到iphone？

Question

我想从服务器复制xml文件以将它保存到本地，因为如果我将一次又一次地向服务器发送请求，则需要时间，所以我想在应用程序启动时将xml复制到本地资源，然后解析当地的xml，

我该怎么办？

Answer 1

首先你需要下载的文件：

NSURL *url = [NSURL URLWithString:FILEURL]; 
    NSURLRequest *request = [NSURLRequest requestWithURL:url]; 
    [NSURLConnection connectionWithRequest:request delegate:self]; 

然后添加在.h文件：

NSMutableData *receivedData; 

，并在M档：

-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data 
    { 
     if (receivedData) 
     { 
      [receivedData appendData:data]; 
     } 
     else 
     { 
      receivedData = [[NSMutableData alloc] initWithData:data]; 
     } 
    } 

    -(void) connectionDidFinishLoading:(NSURLConnection *)connection 
    { 
     //saving your data in the local 

     NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 
     NSString *fullName = [NSString stringWithFormat:@"xmlfile.xml"]; 

     NSString *fullFilePath = [NSString stringWithFormat:@"%@/%@",docDir,fullName]; 
     [receivedData writeToFile:fullFilePath atomically:YES]; 

    } 

编辑： 从本地获取文件 -

NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 
     NSString *fullName = [NSString stringWithFormat:@"xmlfile.xml"]; 

     NSString *fullFilePath = [NSString stringWithFormat:@"%@/%@",docDir,fullName]; 
NSData *myData = [NSData dataWithContentsOfFile:filePath]; 

现在你可以在解析NSData的时候，网站上有很多例子。