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May 2, 2011

How to upload images with text using iPhone SDK using ASIHttpRequest ?

This example shows how to upload images using iPhone SDK. In this example we pick multiple images from iPhone Image Gallery or from iPhone Camera and send them to server using ASIHttpRequest.


You can download source code from here Download.

Code for .h file.

#import

@interface RootViewController : UIViewController {
   
    NSMutableArray *arrImages;
    IBOutlet UIButton *btnImage1;
    IBOutlet UIButton *btnImage2;
    IBOutlet UIButton *btnImage3;
    IBOutlet UIButton *btnImage4;
}

- (IBAction)btnTakePicture_Clicked:(id)sender;
- (IBAction)btnPostImages_Clicked:(id)sender;
@end

Code for .m file.

#import "RootViewController.h"
#import "ASIFormDataRequest.h"

@implementation RootViewController
int intButton;

#pragma mark -
#pragma mark View lifecycle


- (void)viewDidLoad {
    [super viewDidLoad];

    self.title = @"Select Images";
    arrImages = [[NSMutableArray alloc]init];
}

- (IBAction)btnTakePicture_Clicked:(id)sender
{
    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Select Image from..." delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Camera", @"Image Gallary", nil];
    actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
    actionSheet.alpha=0.90;
    actionSheet.tag = 1;
    [actionSheet showInView:self.view];
    [actionSheet release];
    UIButton *btn = (UIButton *)sender;
    intButton = btn.tag;
}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    switch (actionSheet.tag)
    {
        case 1:
            switch (buttonIndex)
        {
            case 0:
            {               
#if TARGET_IPHONE_SIMULATOR
               
                UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Message" message:@"Camera not available." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [alert show];
                [alert release];
               
#elif TARGET_OS_IPHONE   
               
                UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
                picker.sourceType = UIImagePickerControllerSourceTypeCamera; 
                picker.delegate = self; 
                //picker.allowsEditing = YES; 
                [self presentModalViewController:picker animated:YES];
                [picker release];
               
#endif   
            }
                break;
            case 1:
            {
                UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
                picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
                picker.delegate = self; 
                [self presentModalViewController:picker animated:YES];
                [picker release];
            }
                break;
        }
            break;
           
        default:
            break;
    }   
}

-(void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info
{
    NSData *dataImage = UIImageJPEGRepresentation([info objectForKey:@"UIImagePickerControllerOriginalImage"],1);
    UIImage *img = [[UIImage alloc] initWithData:dataImage];

    if (intButton == 1) {
        [btnImage1 setBackgroundImage:img forState:UIControlStateNormal];
        [btnImage1 setImage:nil forState:UIControlStateNormal];
    }
    else if (intButton == 2) {
        [btnImage2 setBackgroundImage:img forState:UIControlStateNormal];
        [btnImage2 setImage:nil forState:UIControlStateNormal];
    }
    else if (intButton == 3) {
        [btnImage3 setBackgroundImage:img forState:UIControlStateNormal];
        [btnImage3 setImage:nil forState:UIControlStateNormal];
    }
    else {
        [btnImage4 setBackgroundImage:img forState:UIControlStateNormal];
        [btnImage4 setImage:nil forState:UIControlStateNormal];
    }
    [arrImages addObject:dataImage];
    [picker dismissModalViewControllerAnimated:YES];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
   
    [self.navigationController dismissModalViewControllerAnimated:YES];   
}

- (IBAction)btnPostImages_Clicked:(id)sender {
   
    if ([arrImages count] > 0) {
        NSString *strURL = @"Write Your URL Here.";
        ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:strURL]];
        [request setDelegate:self];
        [request setPostValue:@"This is sample text..." forKey:@"text"];
        for (int i = 0; i < [arrImages count]; i++) {
            [request addData:[arrImages objectAtIndex:i] withFileName:@"image.jpg" andContentType:@"image/jpeg" forKey:[NSString stringWithFormat:@"image%d", i + 1]];
        }   
        [request startAsynchronous];
    }
    else {
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Message" message:@"Please select images..." delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
        [alertView show];
        [alertView release];
    }
}

- (void)requestFinished:(ASIHTTPRequest *)request {
   
    NSString *receivedString = [request responseString];
    UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Message" message:receivedString delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];
    [alertView show];
    [alertView release];
}
- (void)requestFailed:(ASIHTTPRequest *)request {
   
    NSString *receivedString = [request responseString];
    UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Message" message:receivedString delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
    [alertView show];
    [alertView release];
}

#pragma mark -
#pragma mark Memory management

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
   
    // Relinquish ownership any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
    // For example: self.myOutlet = nil;
}


- (void)dealloc {
    [super dealloc];
}


@end 

2 comments:

  1. Hi,

    how i will find file name


    [request addData:[arrImages objectAtIndex:i] withFileName:@"image.jpg" andContentType:@"image/jpeg" forKey:[NSString stringWithFormat:@"image%d", i + 1]];

    ReplyDelete