iOS - How to call imagepicker delegate method two times when picking images from different button with actionsheet in iphone

-(IBAction)before:(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.tag = 1;
    [actionSheet showFromTabBar:self.tabBarController.tabBar];

}
-(IBAction)after:(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.tag = 2;
    [actionSheet showFromTabBar:self.tabBarController.tabBar];
    
}

- (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:@"Saw Them" 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 presentViewController:picker animated:YES completion:nil];
				[picker release];
				
#endif
			}
				break;
			case 1:
			{
				UIImagePickerController *picker = [[UIImagePickerController alloc] init];
				picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
				picker.delegate = self;
				[self presentViewController:picker animated:YES completion:nil];
				[picker release];
			}
				break;
		}
			break;
case 2:
			switch (buttonIndex)
		{
			case 0:
			{
#if TARGET_IPHONE_SIMULATOR
				
				UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Saw Them" 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 presentViewController:picker animated:YES completion:nil];
				[picker release];
				
#endif
			}
				break;
			case 1:
			{
				UIImagePickerController *picker = [[UIImagePickerController alloc] init];
				picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
				picker.delegate = self;
				[self presentViewController:picker animated:YES completion:nil];
				[picker release];
			}
				break;
		}
			break;
			
		default:
			break;
	}
}


- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    image1 = [info objectForKey:UIImagePickerControllerOriginalImage];
    if (image1 != nil)
    {
        NSError *error;
        NSString *aDocumentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
        NSString *dataPath = [aDocumentsDirectory stringByAppendingPathComponent:@"progress"];
        [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error];
        if (beforebtn.tag == 4) {
        NSString *anImageName = [NSString stringWithFormat:@"before.png"];
        NSString *anImagePath = [NSString stringWithFormat:@"%@/%@", dataPath, anImageName];
        NSData *anImageData = UIImagePNGRepresentation(image1);
            beforeimg.image = [[UIImage alloc] initWithData:anImageData];
        }else if(beforebtn.tag == 5){
            NSString *anImageName = [NSString stringWithFormat:@"after.png"];
            NSString *anImagePath = [NSString stringWithFormat:@"%@/%@", dataPath, anImageName];
            NSData *anImageData = UIImagePNGRepresentation(image1);
            afterimg.image = [[UIImage alloc] initWithData:anImageData];
        }
      
    }
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        [self dismissViewControllerAnimated:YES completion:NULL];
    }else{
        [self.popoverController dismissPopoverAnimated:YES];
    }
}

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