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POChecking filesize after download completed IOS4.3+
 

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  1. POChecking filesize after download completed IOS4.3+
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    <p>I'm trying to check the filesize of a document is correct after I download it to my documents directory. I'm not sure where to check it in my webservice helper file? Or the best method.</p> <p>I'm able to get the expected file length before it starts downloading. And I can get the length of data sent each burst. I was thinking to add these burst numbers up each time in didReceiveData then compare to the expected length but not sure how to add it up correctly.</p> <pre><code>- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { filesize1 = [[NSNumber numberWithLong: [response expectedContentLength]] retain]; NSLog(@"%@", filesize1); if(requestType == DF_WS_REQUEST_GET_PDF_DATA) { [[NSFileManager defaultManager] createFileAtPath:self.filename contents:nil attributes:nil]; self.file = [[NSFileHandle fileHandleForUpdatingAtPath:self.filename] retain];// file is in .h if (self.file) { [self.file seekToEndOfFile]; } } else { [webData setLength: 0]; } } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { resourceLength = [NSNumber numberWithUnsignedInteger:[data length]]; NSLog(@"resource length: %d", [resourceLength intValue]); if(requestType == DF_WS_REQUEST_GET_PDF_DATA) { if (self.file) { [self.file seekToEndOfFile]; } [self.file writeData:data]; } else [webData appendData: data]; } - (void)connectionDidFinishingLoading:(NSURLConnection *)connection { URL = filePreviewViewController.filePath; NSError *AttributesError = nil; NSDictionary *FileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:URL error:&amp;AttributesError]; NSNumber *FileSizeNumber = [FileAttributes objectForKey:NSFileSize]; long FileSize = [FileSizeNumber longValue]; NSLog(@"File: %@, Size: %ld", URL, FileSize); } </code></pre> <p>Any help or ideas would be appreciated greatly. Thanks.</p>
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    1. COif you really want to check the integrity I would advise you should check the MD5 hash of the file.
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      1. USAnkit Srivastava
    2. CONo, I need the file size.
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