Download pdf file from server, save it in ApplicationSupport directory. iOS

Question

I'm newbie in iOS development, and I wanna know how can I download a file from a server, and save it in my Application Support folder. I wanna keep it as .pdf file, to be able to display it in UIWebView.

After long time in diferents websites, I think I should use NSURLConnection (asynchronous) to download it. Or NSData (I tried it already, but it didn't work).

So, there is someone who can help me, by show me a sample code of this?

Thank you so much :)

What is the original format of the file you are downloading? Is it pdf? — Konstantin Chugalinskiy, Jun 14 '11 at 07:55

score 2 · Answer 1 · edited May 23 '17 at 12:26

2

Have a look at this S.O. question for an example of how to do it.

This example uses ASIHTTPRequest, which is an alternative to NSURLRequest and NSURLConnection. I strongly suggest you to use this framework, which will make your life much easier.

If you are really willing to use NSURLRequest and NSURLConnection, see this other topic.

edited May 23 '17 at 12:26

Community

1
1

answered Jun 14 '11 at 07:59

sergio

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score 0 · Answer 2 · edited Mar 11 '14 at 08:07

[self.productListArray enumerateObjectsUsingBlock:^(NSDictionary *productDictionary, NSUInteger idx, BOOL *stop)
{

     NSFileManager *fileManger=[NSFileManager defaultManager];

     if(![fileManger fileExistsAtPath:pdfString])
     {
         dispatch_async(serialQueue, ^()
                        {
                            NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:120];

                            NSURLResponse *response = nil;
                            NSError *connectionError = nil;

                            NSData *data = [NSURLConnection sendSynchronousRequest:request
                                                                 returningResponse:&response
                                                                             error:&connectionError];

                            if(connectionError)
                            {
                                NSLog(@"Pdf Connection Error==>%@",connectionError.userInfo);
                                [AMSharedClass showAlertMessge:@"Request timeout"];

                            }
                            else if ([response.MIMEType isEqualToString:@"application/pdf"])
                            {
                                NSLog(@"pdfFilePathURLString==>%@",pdfString);

                                [data writeToFile:pdfString atomically:YES];
                            }
                            else
                            {
                                [AMSharedClass showAlertMessge:@"Pdf not found."];
                                if (idx+1 == [self.productListArray count])
                                {
                                    [self.btnSetting setEnabled:NO];
                                }
                            }
                            if (idx+1 == [self.productListArray count])
                            {
                                [[[AMSharedClass object]sharedHUD]hideOnWindow];
                                self.pdfURLString =  [self joinPDF:self.productFilePathUrlArray WithDetails:self.pdfInfoArray];
                                [self initialConfiguration];
                                NSLog(@"%@",self.productFilePathUrlArray);
                            }
                        });

         // Long running task

     }
     else
     {
         if (idx+1 == [self.productListArray count])
         {
             self.pdfURLString =  [self joinPDF:self.productFilePathUrlArray WithDetails:self.pdfInfoArray];
             [self initialConfiguration];
             NSLog(@"%@",self.productFilePathUrlArray);
             [[[AMSharedClass object]sharedHUD]hideOnWindow];
         }
     }
 }];

Download pdf file from server, save it in ApplicationSupport directory. iOS

2 Answers2