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I have a problem uploading image to the server. I can use the code below from the iPhone simulator to send to our server successfully. When I used this code below on real device like iPad 2, the image on the server seems to be corrupted. The data was extracted from main source url from AlAssetsLibrary. I don't know why the value of 512 was add with the data length from the code below. Does the layout of the message header important e.g. content-disposition have to come before the content-type? 

    NSDateFormatter *date_formatter=[[NSDateFormatter alloc]init];
[date_formatter setDateFormat:@"YYYY-MM-DD-hh-mm-ss"];
NSString *sDateTime = [date_formatter stringFromDate:[NSDate date]];

[date_formatter release];


    // from http://www.cocoadev.com/index.pl?HTTPFileUpload
    NSMutableURLRequest *urlRequest =
    [NSMutableURLRequest requestWithURL:url];
    [urlRequest setHTTPMethod:@"POST"];
    [urlRequest setValue:
        [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundry]
        forHTTPHeaderField:@"Content-Type"];


NSMutableData *postData =  
    [NSMutableData dataWithCapacity:[data length] + 512];
    [postData appendData:
        [[NSString stringWithFormat:@"--%@\r\n", boundry] dataUsingEncoding:NSUTF8StringEncoding]];
    [postData appendData:
     [[NSString stringWithFormat:
           @"Content-Disposition: form-data; name=\"%@\" filename=\"%@_%@.jpg\"\r\n", FORM_FLE_INPUT,sDateTime, filename]
                dataUsingEncoding:NSUTF8StringEncoding]];                         [postData appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

    [postData appendData:data];
    [postData appendData:
        [[NSString stringWithFormat:@"\r\n--%@--\r\n", boundry] dataUsingEncoding:NSUTF8StringEncoding]];

    [urlRequest setHTTPBody:postData];
    return urlRequest;

Did I missing anything in the code above that will cause the problem?

This is the NSData I generated from AlAsset defaultRepresentation.

int byteArraySize = asset.defaultRepresentation.size;

NSMutableData* data = [[NSMutableData alloc]initWithCapacity:byteArraySize];
void* bufferPointer = [data mutableBytes];
[data release];

NSError* error=nil;
[asset.defaultRepresentation getBytes:bufferPointer fromOffset:0 length:byteArraySize error:&error];
if (error) {
    NSLog(@"%@",error);
}
data = [NSMutableData dataWithBytes:bufferPointer length:byteArraySize];

Now I can send gif but not other format

LittleFunny
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  • Check out the link [how to upload image or video][1] [1]: http://stackoverflow.com/questions/5422028/objective-c-how-to-upload-image-and-text-using-http-post – Hiren Dec 22 '11 at 12:21
  • Now, my application can upload gif file downloaded from internet to server but not other format... – LittleFunny Dec 22 '11 at 23:32
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    try this one, it's convert any type of image into jpg and convert into data UIImageJPEGRepresentation(tmpImage, compressionLevel) or UIImagePNGRepresentation(tmpimage) and then upload to server – Hiren Dec 23 '11 at 04:27

0 Answers0