diff --git a/PhotoPicker.xcworkspace/xcuserdata/StormXX.xcuserdatad/UserInterfaceState.xcuserstate b/PhotoPicker.xcworkspace/xcuserdata/StormXX.xcuserdatad/UserInterfaceState.xcuserstate
index 302c37d..d936b26 100644
Binary files a/PhotoPicker.xcworkspace/xcuserdata/StormXX.xcuserdatad/UserInterfaceState.xcuserstate and b/PhotoPicker.xcworkspace/xcuserdata/StormXX.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/PhotoPicker/PhotoPicker/AssetCell.swift b/PhotoPicker/PhotoPicker/AssetCell.swift
index 074630c..221d6ec 100644
--- a/PhotoPicker/PhotoPicker/AssetCell.swift
+++ b/PhotoPicker/PhotoPicker/AssetCell.swift
@@ -15,19 +15,21 @@ class AssetCell: UICollectionViewCell {
     @IBOutlet weak var checkMarkImageView: UIImageView!
     
     override var selected: Bool {
-        didSet {
-            checkMarkImageView.image = selected ? UIImage(named: selectedCheckMarkImageName, inBundle: currentBundle, compatibleWithTraitCollection: nil) : UIImage(named: unselectedCheckMarkImageName, inBundle: currentBundle, compatibleWithTraitCollection: nil)
-            if selected {
-                UIView.animateKeyframesWithDuration(0.33, delay: 0.0, options: [], animations: { () -> Void in
-                    UIView.addKeyframeWithRelativeStartTime(0.0, relativeDuration: 0.5, animations: { [unowned self]() -> Void in
-                        let transform = CGAffineTransformMakeScale(1.3, 1.3)
-                        self.checkMarkImageView.transform = transform
-                    })
-                    
-                    UIView.addKeyframeWithRelativeStartTime(0.5, relativeDuration: 0.5, animations: { [unowned self]() -> Void in
-                        self.checkMarkImageView.transform = CGAffineTransformIdentity
-                    })
-                    }, completion: nil)
+        willSet {
+            checkMarkImageView.image = newValue ? UIImage(named: selectedCheckMarkImageName, inBundle: currentBundle, compatibleWithTraitCollection: nil) : UIImage(named: unselectedCheckMarkImageName, inBundle: currentBundle, compatibleWithTraitCollection: nil)
+            if !selected && newValue {
+                if newValue {
+                    UIView.animateKeyframesWithDuration(0.33, delay: 0.0, options: [], animations: { () -> Void in
+                        UIView.addKeyframeWithRelativeStartTime(0.0, relativeDuration: 0.5, animations: { [unowned self]() -> Void in
+                            let transform = CGAffineTransformMakeScale(1.3, 1.3)
+                            self.checkMarkImageView.transform = transform
+                            })
+                        
+                        UIView.addKeyframeWithRelativeStartTime(0.5, relativeDuration: 0.5, animations: { [unowned self]() -> Void in
+                            self.checkMarkImageView.transform = CGAffineTransformIdentity
+                            })
+                        }, completion: nil)
+                }
             }
         }
     }
diff --git a/PhotoPicker/PhotoPicker/AssetsViewController.swift b/PhotoPicker/PhotoPicker/AssetsViewController.swift
index 0597cb8..7d5caac 100644
--- a/PhotoPicker/PhotoPicker/AssetsViewController.swift
+++ b/PhotoPicker/PhotoPicker/AssetsViewController.swift
@@ -13,7 +13,11 @@ class AssetsViewController: UICollectionViewController {
     
     //MARK: - public property
     var photoPickerController: PhotoPickerController!
-    var selectedAssets: [PHAsset] = []
+    var selectedAssets: [PHAsset] = [] {
+        didSet {
+            updateHighQualityImageSize()
+        }
+    }
     
     var assetCollection: PHAssetCollection! {
         didSet {
@@ -137,7 +141,7 @@ class AssetsViewController: UICollectionViewController {
             selectedAssets.append(asset)
             lastSelectItemIndexPath = indexPath
         } else {
-            photoPickerController.delegate?.photoPickerController(photoPickerController, didFinishPickingAssets: [asset], needHighQualityImage: true)
+            photoPickerController.delegate?.photoPickerController(photoPickerController, didFinishPickingAssets: [asset], needHighQualityImage: toolbarHighQualityButton.checked)
         }
         
         updateToolBar()
@@ -193,6 +197,7 @@ extension AssetsViewController {
         guard photoPickerController.allowMultipleSelection else { return }
         toolbarNumberView = ToolBarNumberView(frame: CGRect(origin: CGPointZero, size: CGSize(width: 21.0, height: 21.0)))
         toolbarHighQualityButton = ToolBarHighQualityButton(frame: CGRect(origin: CGPointZero, size: CGSize(width: 150, height: 21.0)))
+        toolbarHighQualityButton.assetsViewController = self
         
         sendBarItem = UIBarButtonItem(title: "Send", style: .Plain, target: self, action: "sendButtonTapped")
         sendBarItem.enabled = false
@@ -210,6 +215,21 @@ extension AssetsViewController {
         sendBarItem.enabled = (selectedAssets.count != 0)
         toolbarNumberView.number = selectedAssets.count
     }
+    
+    func updateHighQualityImageSize() {
+        guard toolbarHighQualityButton.checked else { return }
+        var size: Int = 0
+        selectedAssets.forEach { (asset) -> () in
+            let options = PHImageRequestOptions()
+            options.synchronous = true
+            PHImageManager.defaultManager().requestImageDataForAsset(asset, options: options, resultHandler: { (imageData, dataUTI, orientation, info) -> Void in
+                if let data = imageData {
+                    size += data.length
+                }
+            })
+        }
+        self.toolbarHighQualityButton.highqualityImageSize = size
+    }
 }
 
 //MARK: - collection view help method
diff --git a/PhotoPicker/PhotoPicker/PhotoPickerProtocol.swift b/PhotoPicker/PhotoPicker/PhotoPickerProtocol.swift
index 008faa4..9e8bff4 100644
--- a/PhotoPicker/PhotoPicker/PhotoPickerProtocol.swift
+++ b/PhotoPicker/PhotoPicker/PhotoPickerProtocol.swift
@@ -17,7 +17,7 @@ public protocol PhotoPickerDelegate: class {
 }
 
 public extension PhotoPickerDelegate {
-    func photoPickerController(controller: PhotoPickerController, didFinishPickingAssets: [PHAsset], needHighQualityImage: Bool) {
+    func photoPickerController(controller: PhotoPickerController, didFinishPickingAssets assets: [PHAsset], needHighQualityImage: Bool) {
         return
     }
     
@@ -25,16 +25,15 @@ public extension PhotoPickerDelegate {
         return
     }
     
-    func photoPickerController(controller: PhotoPickerController, shouldSelectAsset: PHAsset) -> Bool {
+    func photoPickerController(controller: PhotoPickerController, shouldSelectAsset asset: PHAsset) -> Bool {
         return true
     }
     
-    
-    func photoPickerController(controller: PhotoPickerController, didSelectAsset: PHAsset) {
+    func photoPickerController(controller: PhotoPickerController, didSelectAsset asset: PHAsset) {
         return
     }
     
-    func photoPickerController(controller: PhotoPickerController, didDeselectAsset: PHAsset) {
+    func photoPickerController(controller: PhotoPickerController, didDeselectAsset asset: PHAsset) {
         return
     }
 }
diff --git a/PhotoPicker/PhotoPicker/ToolBarHighQualityButton.swift b/PhotoPicker/PhotoPicker/ToolBarHighQualityButton.swift
index 83d397c..eafaeaf 100644
--- a/PhotoPicker/PhotoPicker/ToolBarHighQualityButton.swift
+++ b/PhotoPicker/PhotoPicker/ToolBarHighQualityButton.swift
@@ -11,15 +11,35 @@ import UIKit
 let imageViewWidth: CGFloat = 18
 class ToolBarHighQualityButton: UIView {
     
+    weak var assetsViewController: AssetsViewController!
+    
     //MARK: - public property
     var checked: Bool = false {
         didSet {
             if checked {
                 imageView.image = UIImage(named: toolbarHighQualityImageCheckedImageName, inBundle: currentBundle, compatibleWithTraitCollection: nil)
                 titleLabel.textColor = blueTextColor
+                assetsViewController.updateHighQualityImageSize()
             } else {
                 imageView.image = UIImage(named: toolbarHighQualityImageUnCheckedImageName, inBundle: currentBundle, compatibleWithTraitCollection: nil)
                 titleLabel.textColor = greyTextColor
+                highqualityImageSize = 0
+            }
+        }
+    }
+    
+    var highqualityImageSize: Int = 0 {
+        didSet {
+            if highqualityImageSize == 0 {
+                titleLabel.text = "Origin"
+            } else {
+                let kb: Float = Float(highqualityImageSize) / 1024.0
+                if kb > 1024.0 {
+                    let mb: Float = kb / 1024.0
+                    titleLabel.text = "Origin(\(String(format: "%.2f", mb))M)"
+                } else {
+                    titleLabel.text = "Origin(\(String(format: "%.2f", kb))K)"
+                }
             }
         }
     }