Improves the security in ImagePicker

Demo/ImagePickerDemo/ImagePickerDemo.xcodeproj/project.pbxproj

@@ -357,7 +357,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.4;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -396,7 +396,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.4;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -474,7 +474,7 @@
 				29D699F71B70ABFC0021FA73 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
+			defaultConfigurationName = Debug;
 		};
 		29D699F81B70ABFC0021FA73 /* Build configuration list for PBXNativeTarget "ImagePickerDemo" */ = {
 			isa = XCConfigurationList;
@@ -483,7 +483,7 @@
 				29D699FA1B70ABFC0021FA73 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
+			defaultConfigurationName = Debug;
 		};
 		29D699FB1B70ABFC0021FA73 /* Build configuration list for PBXNativeTarget "ImagePickerDemoTests" */ = {
 			isa = XCConfigurationList;
@@ -492,7 +492,7 @@
 				29D699FD1B70ABFC0021FA73 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
+			defaultConfigurationName = Debug;
 		};
 /* End XCConfigurationList section */
 	};

Demo/ImagePickerDemo/ImagePickerDemo/Base.lproj/LaunchScreen.xib

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6214" systemVersion="14A314h" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="8191" systemVersion="15A282b" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6207"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8154"/>
         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
     </dependencies>
     <objects>
@@ -13,17 +14,20 @@
             <subviews>
                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2015 Ramon Gilabert Llop. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
                     <rect key="frame" x="20" y="439" width="441" height="21"/>
+                    <animations/>
                     <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                    <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
+                    <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
                     <nil key="highlightedColor"/>
                 </label>
                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="ImagePickerDemo" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
                     <rect key="frame" x="20" y="140" width="441" height="43"/>
+                    <animations/>
                     <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
-                    <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
+                    <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
                     <nil key="highlightedColor"/>
                 </label>
             </subviews>
+            <animations/>
             <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
             <constraints>
                 <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>

Demo/ImagePickerDemo/ImagePickerDemo/Info.plist

@@ -7,11 +7,11 @@
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<string>no.ImagePicker.hyper</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>$(PRODUCT_NAME)</string>
+	<string>ImagePicker</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>

Demo/ImagePickerDemo/Podfile.lock

@@ -6,9 +6,9 @@ DEPENDENCIES:
 
 EXTERNAL SOURCES:
   ImagePicker:
-    :path: "../../"
+    :path: ../../
 
 SPEC CHECKSUMS:
   ImagePicker: 32becfa25b8e9179e60c45411b577340d35e3e32
 
-COCOAPODS: 0.38.2
+COCOAPODS: 0.39.0.beta.4

Source/BottomView/BottomContainerView.swift

@@ -31,7 +31,7 @@ class BottomContainerView: UIView {
   lazy var doneButton: UIButton = { [unowned self] in
     let button = UIButton()
     button.setTitle(self.configuration.cancelButtonTitle, forState: .Normal)
-    button.titleLabel!.font = self.configuration.doneButton
+    button.titleLabel?.font = self.configuration.doneButton
     button.addTarget(self, action: "doneButtonDidPress:", forControlEvents: .TouchUpInside)
 
     return button
@@ -80,7 +80,7 @@ class BottomContainerView: UIView {
   }
 
   required init?(coder aDecoder: NSCoder) {
-      fatalError("init(coder:) has not been implemented")
+    fatalError("init(coder:) has not been implemented")
   }
 
   // MARK: - Action methods

Source/BottomView/StackView.swift

@@ -109,14 +109,13 @@ extension ImageStackView {
   }
 
   func renderViews(images: [UIImage]) {
-    if images.count < 1 {
-      //TODO: subclass view and use setimage method here to automatically adjust alpha and NIL
+    if let firstView = views.first where images.count < 1 {
       for imageView in views {
         imageView.image = nil
         imageView.alpha = 0
       }
 
-      views.first!.alpha = 1
+      firstView.alpha = 1
       return
     }
 

Source/CameraView/CameraView.swift

@@ -77,19 +77,20 @@ class CameraView: UIViewController {
     let authorizationStatus = AVCaptureDevice.authorizationStatusForMediaType(AVMediaTypeVideo)
 
     for device in devices {
-      if device.hasMediaType(AVMediaTypeVideo)
-        && authorizationStatus == .Authorized {
-          captureDevice = device as? AVCaptureDevice
-          capturedDevices?.addObject(device as! AVCaptureDevice)
-      } else if device.hasMediaType(AVMediaTypeVideo)
-        && authorizationStatus == .NotDetermined {
+      if let device = device as? AVCaptureDevice {
+        if device.hasMediaType(AVMediaTypeVideo) && authorizationStatus == .Authorized {
+          captureDevice = device
+          capturedDevices?.addObject(device)
+        } else if device.hasMediaType(AVMediaTypeVideo) && authorizationStatus == .NotDetermined {
           AVCaptureDevice.requestAccessForMediaType(AVMediaTypeVideo,
             completionHandler: { (granted: Bool) -> Void in
               if granted {
-                self.captureDevice = device as? AVCaptureDevice
-                self.capturedDevices?.addObject(device as! AVCaptureDevice)
+                self.captureDevice = device
+                self.capturedDevices?.addObject(device)
               }
           })
+        }
+
       }
     }
 
@@ -103,7 +104,8 @@ class CameraView: UIViewController {
   // MARK: - Camera actions
 
   func rotateCamera() {
-    let deviceIndex = capturedDevices?.indexOfObject(captureDevice!)
+    guard let captureDevice = captureDevice else { return }
+    let deviceIndex = capturedDevices?.indexOfObject(captureDevice)
     let currentDeviceInput = captureSession.inputs.first as! AVCaptureDeviceInput
     var newDeviceIndex = 0
 
@@ -117,18 +119,19 @@ class CameraView: UIViewController {
       }
     }
 
-    captureDevice = capturedDevices?.objectAtIndex(newDeviceIndex) as? AVCaptureDevice
+    self.captureDevice = capturedDevices?.objectAtIndex(newDeviceIndex) as? AVCaptureDevice
     configureDevice()
 
-    delegate?.handleFlashButton(captureDevice?.position == .Front)
+    delegate?.handleFlashButton(captureDevice.position == .Front)
 
+    guard let currentCaptureDevice = self.captureDevice else { return }
     UIView.animateWithDuration(0.3, animations: { [unowned self] in
       self.containerView.alpha = 1
       }, completion: { finished in
         self.captureSession.beginConfiguration()
         self.captureSession.removeInput(currentDeviceInput)
 
-        if self.captureDevice!.supportsAVCaptureSessionPreset(AVCaptureSessionPreset1280x720) {
+        if currentCaptureDevice.supportsAVCaptureSessionPreset(AVCaptureSessionPreset1280x720) {
           self.captureSession.sessionPreset = AVCaptureSessionPreset1280x720
         } else {
           self.captureSession.sessionPreset = AVCaptureSessionPreset640x480
@@ -173,29 +176,36 @@ class CameraView: UIViewController {
     })
 
     let queue = dispatch_queue_create("session queue", DISPATCH_QUEUE_SERIAL)
-    let videoOrientation = previewLayer?.connection.videoOrientation
 
-    stillImageOutput?.connectionWithMediaType(AVMediaTypeVideo).videoOrientation = videoOrientation!
+    if let videoOrientation = previewLayer?.connection.videoOrientation {
+      stillImageOutput?.connectionWithMediaType(AVMediaTypeVideo).videoOrientation = videoOrientation
+    }
+
+    guard let stillImageOutput = self.stillImageOutput else { return }
 
     dispatch_async(queue, { [unowned self] in
-      self.stillImageOutput!.captureStillImageAsynchronouslyFromConnection(self.stillImageOutput!.connectionWithMediaType(AVMediaTypeVideo), completionHandler: { (buffer, error) -> Void in
-        let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(buffer)
-        let image = self.cropImage(UIImage(data: imageData)!)
-        let orientation = self.pictureOrientation()
-        let assetsLibrary = ALAssetsLibrary()
-        assetsLibrary.writeImageToSavedPhotosAlbum(image.CGImage, orientation: orientation, completionBlock: nil)
-
-        let rotatedImage = UIImage(CGImage: image.CGImage!,
-          scale: 1.0,
-          orientation: UIImageOrientation(rawValue: orientation.rawValue)!)
-        self.delegate?.imageToLibrary(rotatedImage)
+      stillImageOutput.captureStillImageAsynchronouslyFromConnection(stillImageOutput.connectionWithMediaType(AVMediaTypeVideo),
+        completionHandler: { (buffer, error) -> Void in
+          let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(buffer)
+          guard let imageFromData = UIImage(data: imageData) else { return }
+          let image = self.cropImage(imageFromData)
+          let orientation = self.pictureOrientation()
+          let assetsLibrary = ALAssetsLibrary()
+          assetsLibrary.writeImageToSavedPhotosAlbum(image.CGImage, orientation: orientation, completionBlock: nil)
+
+          guard let imageCG = image.CGImage, realOrientation = UIImageOrientation(rawValue: orientation.rawValue) else { return }
+          let rotatedImage = UIImage(CGImage: imageCG,
+            scale: 1.0,
+            orientation: realOrientation)
+          self.delegate?.imageToLibrary(rotatedImage)
+      })
       })
-    })
   }
 
   func cropImage(image: UIImage) -> UIImage {
-    let imageReference = CGImageCreateWithImageInRect(image.CGImage, CGRect(x: 0, y: 0, width: image.size.height - 200, height: image.size.width))
-    let normalizedImage = UIImage(CGImage: imageReference!, scale: 1, orientation: .Right)
+    guard let imageReference = CGImageCreateWithImageInRect(image.CGImage,
+      CGRect(x: 0, y: 0, width: image.size.height - 200, height: image.size.width)) else { return UIImage() }
+    let normalizedImage = UIImage(CGImage: imageReference, scale: 1, orientation: .Right)
 
     return normalizedImage
   }
@@ -245,7 +255,8 @@ class CameraView: UIViewController {
   }
 
   override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
-    let anyTouch = touches.first!
+    guard let firstTouch = touches.first else { return }
+    let anyTouch = firstTouch
     let touchX = anyTouch.locationInView(view).x
     let touchY = anyTouch.locationInView(view).y
     focusImageView.transform = CGAffineTransformIdentity
@@ -274,13 +285,13 @@ class CameraView: UIViewController {
         print("failed to capture device")
       }
 
-
-      previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
-      previewLayer?.autoreverses = true
-      previewLayer?.videoGravity = AVLayerVideoGravityResizeAspectFill
+      guard let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession) else { return }
+      self.previewLayer = previewLayer
+      previewLayer.autoreverses = true
+      previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
+      view.layer.addSublayer(previewLayer)
+      previewLayer.frame = view.layer.frame
       view.clipsToBounds = true
-      view.layer.addSublayer(previewLayer!)
-      previewLayer?.frame = view.layer.frame
       captureSession.startRunning()
       delegate?.handleFlashButton(captureDevice?.position == .Front)
       stillImageOutput = AVCaptureStillImageOutput()
@@ -295,8 +306,9 @@ class CameraView: UIViewController {
     let bundlePath = NSBundle(forClass: self.classForCoder).resourcePath?.stringByAppendingString("/ImagePicker.bundle")
     let bundle = NSBundle(path: bundlePath!)
     let traitCollection = UITraitCollection(displayScale: 3)
-    let image = UIImage(named: name, inBundle: bundle, compatibleWithTraitCollection: traitCollection)
 
-    return image!
+    guard let image = UIImage(named: name, inBundle: bundle, compatibleWithTraitCollection: traitCollection) else { return UIImage() }
+
+    return image
   }
 }

Source/Extensions/ConstraintsSetup.swift

@@ -140,18 +140,18 @@ extension ImagePickerController {
 extension ImageGalleryViewCell {
 
   func setupConstraints() {
-    if !constraintsAdded {
-      for attribute: NSLayoutAttribute in [.Width, .Height, .CenterX, .CenterY] {
-        addConstraint(NSLayoutConstraint(item: imageView, attribute: attribute,
-          relatedBy: .Equal, toItem: self, attribute: attribute,
-          multiplier: 1, constant: 0))
-
-        addConstraint(NSLayoutConstraint(item: selectedImageView, attribute: attribute,
-          relatedBy: .Equal, toItem: self, attribute: attribute,
-          multiplier: 1, constant: 0))
-      }
-
-      constraintsAdded = true
+    guard !constraintsAdded else { return }
+
+    for attribute: NSLayoutAttribute in [.Width, .Height, .CenterX, .CenterY] {
+      addConstraint(NSLayoutConstraint(item: imageView, attribute: attribute,
+        relatedBy: .Equal, toItem: self, attribute: attribute,
+        multiplier: 1, constant: 0))
+
+      addConstraint(NSLayoutConstraint(item: selectedImageView, attribute: attribute,
+        relatedBy: .Equal, toItem: self, attribute: attribute,
+        multiplier: 1, constant: 0))
     }
+
+    constraintsAdded = true
   }
 }