將XML文件從服務器複製到iphone？

Question

我想從服務器複製xml文件以將它保存到本地，因爲如果我將一次又一次地向服務器發送請求，則需要時間，所以我想在應用程序啓動時將xml複製到本地資源，然後解析當地的xml，

我該怎麼辦？

Answer 1

首先你需要下載的文件：

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

然後添加在.h文件：

NSMutableData *receivedData; 

，並在M檔：

-(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]; 

    } 

編輯： 從本地獲取文件 -

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]; 

現在你可以在解析NSData的時候，網站上有很多例子。