iphone - emailing an image picked by user from UIpickerController -

what want in app have user select image in library, attach image email , send it.

i have read multiple examples, cant seem work this

- (ibaction)buttontouched:(id)sender; 

{ // create image picker controller uiimagepickercontroller *imagepicker = [[uiimagepickercontroller alloc] init];

// set source camera imagepicker.sourcetype =  uiimagepickercontrollersourcetypephotolibrary;  // delegate self imagepicker.delegate = self;  // allow editing of image ? 

// imagepicker.allowsimageediting = no;

// show image picker [self presentmodalviewcontroller:imagepicker animated:yes];  

}

this code tried image @ button press. how email, dont understand how returns image , in format

any welcome :)

i have same request weeks ago, have display uiimagepickercontroller , let user select image, , save in variable.

uiimage *image; 

next implemente method:

// displays email composition interface inside application. populates mail fields.  -(void)displaycomposersheet  {     mfmailcomposeviewcontroller *picker = [[mfmailcomposeviewcontroller alloc] init];     picker.mailcomposedelegate = self;      [picker setsubject:@"this subject"];       // set recipients     nsarray *torecipients = [nsarray arraywithobject:@"personone@example.com"];       [picker settorecipients:torecipients];      // attach image email     nsdata *mydata = uiimagepngrepresentation(self.image);     [picker addattachmentdata:mydata mimetype:@"image/png" filename:@"myimage"];      [self presentmodalviewcontroller:picker animated:yes];     [picker release]; }