how to post an image to the web server - iphone

Question

I am working with web services using json parsing. I am able to get images from the web services, can someone help me how to post an image? How i can post an image to the web services?

Answer 1

it will be something along the lines of this...
NSMutableURLRequest *mutableRequest = [[NSMutableURLRequest alloc] initWithURL:#"you url"];
[mutableRequest addValue:#"image/jpeg" forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[NSData dataWithData:UIImageJPEGRepresentation(self.image, 0.9)]];
[mutableRequest setHTTPBody:body];
NSURLResponse *response;
NSError *error;
(void) [NSURLConnection sendSynchronousRequest:mutableRequest returningResponse:&response error:&error];
Thanks

Answer 2

Find here serverside (PHP) coding for image Upload with random name. also it will give the image link as response.
//Create a folder named images in your server where you want to upload the image.
// And Create a PHP file and use below code .
<?php
$uploaddir = 'images/';
$ran = rand () ;
$file = basename($_FILES['userfile']['name']);
$uploadfile = $uploaddir .$ran.$file;
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
echo "www.host.com/.../images/{$uploadfile}";
}
?>
And Here is iOS code
- (IBAction)uploadClicked:(id)sender
{
/*
turning the image into a NSData object
getting the image back out of the UIImageView
setting the quality to 90
*/
NSData *imageData = UIImageJPEGRepresentation(imageView.image, 90);
// setting up the URL to post to
NSString *urlString = #"your URL link";
// setting up the request object now
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
/*
add some header info now
we always need a boundary when we post a file
also we need to set the content type
You might want to generate a random boundary.. this is just the same
as my output from wireshark on a valid html post
*/
NSString *boundary = [NSString stringWithString:#"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
/*
now lets create the body of the post
*/
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"rn--%#rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Disposition: form-data; name="userfile"; filename="ipodfile.jpg"rn"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Type: application/octet-streamrnrn"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:#"rn--%#--rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// now lets make the connection to the web
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(returnString);
}

Answer 3

Check below good tutorial.In that tutorial you able to find the ios side code as well server side php code too.
http://zcentric.com/2008/08/29/post-a-uiimage-to-the-web/

Answer 4

The best way to use ASIHttpFormData Click here to know how to use