ChooseImage.swift

//
//  ChooseImage.swift
//  ImageAnnotation
//
//  Created by Sagar on 18/02/15.
//  Copyright (c) 2015 Sagar. All rights reserved.
//

import UIKit

class ChooseImage: UIViewController,UIAlertViewDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIPopoverControllerDelegate {

    @IBOutlet weak var imageView: UIImageView!

    @IBOutlet weak var btnClickMe: UIButton!
    
    var picker: UIImagePickerController?=UIImagePickerController()
    
    var popover: UIPopoverController?=nil
    
    override func viewDidLoad() {
        super.viewDidLoad()
        picker?.delegate = self
        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    @IBAction func btnImagePickerClicked(sender: AnyObject)
    {
        var alert:UIAlertController=UIAlertController(title: "Choose Image", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)
        
        var cameraAction = UIAlertAction(title: "Camera", style: UIAlertActionStyle.Default)
        {
                UIAlertAction in
                self.openCamera()
                
        }
        var gallaryAction = UIAlertAction(title: "Gallary", style: UIAlertActionStyle.Default)
            {
                UIAlertAction in
                self.openGallary()
        }
        var cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel)
            {
                UIAlertAction in
                
        }
        
        // Add the actions
        alert.addAction(cameraAction)
        alert.addAction(gallaryAction)
        alert.addAction(cancelAction)
        
        // Present the actionsheet
        if UIDevice.currentDevice().userInterfaceIdiom == .Phone
        {
            self.presentViewController(alert, animated: true, completion: nil)
        }
        else
        {
            popover=UIPopoverController(contentViewController: alert)
            popover!.presentPopoverFromRect(btnClickMe.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true)
        }
    }
    
    func openCamera()
    {
        if(UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera))
        {
            picker!.sourceType = UIImagePickerControllerSourceType.Camera
            self.presentViewController(picker!, animated: true, completion: nil)
        }
        else
        {
            openGallary()
        }
    }
    
    func openGallary()
    {
        picker!.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        if UIDevice.currentDevice().userInterfaceIdiom == .Phone
        {
            self.presentViewController(picker!, animated: true, completion: nil)
        }
        else
        {
            popover=UIPopoverController(contentViewController: picker!)
            popover?.presentPopoverFromRect(btnClickMe.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true)
        }
    }
    
    func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]!)
    {
        picker.dismissViewControllerAnimated(true, completion: nil)
        var tempImage: UIImage=(info[UIImagePickerControllerOriginalImage] as UIImage)
        //sets the selected image to image view
        imageView.image = tempImage
    }
    
    func imagePickerControllerDidCancel(picker: UIImagePickerController!)
    {
        println("picker cancel.")
    }
}