diff --git a/Cartfile.resolved b/Cartfile.resolved
index b27c998..f7a7ee2 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1 +1 @@
-github "onevcat/Kingfisher" "3.10.4"
+github "onevcat/Kingfisher" "4.1.1"
diff --git a/PhotoBrowser.xcodeproj/project.pbxproj b/PhotoBrowser.xcodeproj/project.pbxproj
index cb974fa..65f8ce0 100644
--- a/PhotoBrowser.xcodeproj/project.pbxproj
+++ b/PhotoBrowser.xcodeproj/project.pbxproj
@@ -80,8 +80,8 @@
 				4A52D2371C72F568001C257B /* PhotoPreviewController.swift */,
 				4A87F61E1C96CF63005A9667 /* PBAnimation.swift */,
 				4A0739981C98FB3C0004FEA5 /* PBCustomView.swift */,
-				4A52D1E51C72CB2E001C257B /* Info.plist */,
 				A18117DF1E83B66900F8CE8E /* CustomPhotoBroswerManager.swift */,
+				4A52D1E51C72CB2E001C257B /* Info.plist */,
 			);
 			path = PhotoBrowser;
 			sourceTree = "<group>";
@@ -125,12 +125,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0720;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = Teambition;
 				TargetAttributes = {
 					4A52D1DF1C72CB2E001C257B = {
 						CreatedOnToolsVersion = 7.2.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0900;
 					};
 				};
 			};
@@ -190,14 +190,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -240,14 +246,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -296,7 +308,8 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -319,7 +332,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.Teambition.PhotoBrowser;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
diff --git a/PhotoBrowser.xcodeproj/xcshareddata/xcschemes/PhotoBrowser.xcscheme b/PhotoBrowser.xcodeproj/xcshareddata/xcschemes/PhotoBrowser.xcscheme
index 54861dc..af7d98f 100644
--- a/PhotoBrowser.xcodeproj/xcshareddata/xcschemes/PhotoBrowser.xcscheme
+++ b/PhotoBrowser.xcodeproj/xcshareddata/xcschemes/PhotoBrowser.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -55,6 +56,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/PhotoBrowser.xcworkspace/contents.xcworkspacedata b/PhotoBrowser.xcworkspace/contents.xcworkspacedata
index 1452a7d..3f14a71 100644
--- a/PhotoBrowser.xcworkspace/contents.xcworkspacedata
+++ b/PhotoBrowser.xcworkspace/contents.xcworkspacedata
@@ -2,9 +2,9 @@
 <Workspace
    version = "1.0">
    <FileRef
-      location = "group:PhotoBrowserDemo.xcodeproj">
+      location = "group:PhotoBrowser.xcodeproj">
    </FileRef>
    <FileRef
-      location = "group:PhotoBrowser.xcodeproj">
+      location = "group:PhotoBrowserDemo.xcodeproj">
    </FileRef>
 </Workspace>
diff --git a/PhotoBrowser/Info.plist b/PhotoBrowser/Info.plist
index d3de8ee..3157e47 100644
--- a/PhotoBrowser/Info.plist
+++ b/PhotoBrowser/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
+	<string>0.7.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
diff --git a/PhotoBrowser/PBActionBarItem.swift b/PhotoBrowser/PBActionBarItem.swift
index 8f8862d..b7ea235 100644
--- a/PhotoBrowser/PBActionBarItem.swift
+++ b/PhotoBrowser/PBActionBarItem.swift
@@ -33,7 +33,7 @@ open class PBActionBarItem: NSObject {
         self.action = action
     }
 
-    func triggerAction() {
+    @objc func triggerAction() {
         guard let photoBrowser = photoBrowser, let action = action else {
             return
         }
diff --git a/PhotoBrowser/PBCustomView.swift b/PhotoBrowser/PBCustomView.swift
index 3c09563..ca68ebf 100644
--- a/PhotoBrowser/PBCustomView.swift
+++ b/PhotoBrowser/PBCustomView.swift
@@ -150,7 +150,7 @@ class PBNavigationBar: UIView {
 
     lazy var leftButton: UIButton = {
         let button = UIButton()
-        let image = UIImage(named: "icon-cross", in: Bundle(for: classForCoder()), compatibleWith: nil)
+        let image = UIImage(named: "icon-cross", in: Bundle(for: classForCoder), compatibleWith: nil)
         button.setImage(image, for: UIControlState())
         button.translatesAutoresizingMaskIntoConstraints = false
         button.addConstraint(NSLayoutConstraint(item: button, attribute: .width, relatedBy: .greaterThanOrEqual, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 40))
@@ -160,7 +160,7 @@ class PBNavigationBar: UIView {
     
     lazy var moreButton: UIButton = {
         let button = UIButton()
-        var image = UIImage(named: "moreIcon", in: Bundle(for: classForCoder()), compatibleWith: nil)
+        var image = UIImage(named: "moreIcon", in: Bundle(for: classForCoder), compatibleWith: nil)
         button.setImage(image, for: .normal)
         button.translatesAutoresizingMaskIntoConstraints = false
         button.addConstraint(NSLayoutConstraint(item: button, attribute: .width, relatedBy: .greaterThanOrEqual, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 40))
@@ -171,9 +171,9 @@ class PBNavigationBar: UIView {
 
     lazy var rightButton: UIButton = {
         let button = UIButton()
-        var image = UIImage(named: "icon-share", in: Bundle(for: classForCoder()), compatibleWith: nil)
+        var image = UIImage(named: "icon-share", in: Bundle(for: classForCoder), compatibleWith: nil)
         if self.isFromPhotoPicker {
-            let unselectedImage = UIImage(named: "checkmark_unselected", in: Bundle(for: classForCoder()), compatibleWith: nil)
+            let unselectedImage = UIImage(named: "checkmark_unselected", in: Bundle(for: classForCoder), compatibleWith: nil)
             image = self.imageSelected ? self.getCheckedSelectedImage() : unselectedImage
         }
         button.setImage(image, for: .normal)
diff --git a/PhotoBrowser/PhotoBrowser.swift b/PhotoBrowser/PhotoBrowser.swift
index d7c2af6..90c0763 100644
--- a/PhotoBrowser/PhotoBrowser.swift
+++ b/PhotoBrowser/PhotoBrowser.swift
@@ -322,7 +322,7 @@ extension PhotoBrowser {
         return itemsArray
     }
     
-    func leftButtonTap(_ sender: AnyObject?) {
+    @objc func leftButtonTap(_ sender: AnyObject?) {
         if let delegate = photoBrowserDelegate {
             delegate.dismissPhotoBrowser(self)
         } else {
@@ -330,7 +330,7 @@ extension PhotoBrowser {
         }
     }
 
-    func showMoreFiles(_ sender: Any) {
+    @objc func showMoreFiles(_ sender: Any) {
         photoBrowserDelegate?.didShowMoreFiles(self)
     }
 
@@ -347,7 +347,7 @@ extension PhotoBrowser {
         photoBrowserDelegate?.photoBrowser(self, didHideSkitchButton: isSkitchButtonHidden)
     }
 
-    func rightButtonTap(_ sender: AnyObject) {
+    @objc func rightButtonTap(_ sender: AnyObject) {
         guard let photo = currentPhoto else {
             return
         }
diff --git a/PhotoBrowser/PhotoPreviewController.swift b/PhotoBrowser/PhotoPreviewController.swift
index 9c86c33..c61e5c7 100644
--- a/PhotoBrowser/PhotoPreviewController.swift
+++ b/PhotoBrowser/PhotoPreviewController.swift
@@ -393,7 +393,7 @@ extension PhotoPreviewController: SkitchViewDelegate {
 
 extension PhotoPreviewController {
     
-    func handleDoubleTap(_ sender: UITapGestureRecognizer) {
+    @objc func handleDoubleTap(_ sender: UITapGestureRecognizer) {
         if scrollView.zoomScale != scrollView.minimumZoomScale {
             scrollView.setZoomScale(scrollView.minimumZoomScale, animated: true)
         } else {
@@ -406,14 +406,14 @@ extension PhotoPreviewController {
         updateConstraint()
     }
     
-    func handleSingleTap(_ sender: UITapGestureRecognizer) {
+    @objc func handleSingleTap(_ sender: UITapGestureRecognizer) {
         guard let delegate = delegate else {
             return
         }
         delegate.isFullScreenMode = !delegate.isFullScreenMode
     }
     
-    func handleLongPress(_ sender: UILongPressGestureRecognizer) {
+    @objc func handleLongPress(_ sender: UILongPressGestureRecognizer) {
         guard let delegate = delegate, let photo = photo else {
             return
         }
@@ -422,7 +422,7 @@ extension PhotoPreviewController {
         }
     }
 
-    func handleBackgroundSingleTap(_ sender: UITapGestureRecognizer) {
+    @objc func handleBackgroundSingleTap(_ sender: UITapGestureRecognizer) {
         delegate?.didTapOnBackground()
     }
 }
diff --git a/PhotoBrowser/SkitchView.swift b/PhotoBrowser/SkitchView.swift
index 8618675..ada1c95 100644
--- a/PhotoBrowser/SkitchView.swift
+++ b/PhotoBrowser/SkitchView.swift
@@ -81,7 +81,7 @@ class SkitchView: UIView {
         skitchRectangleButton.tag = PhotoPreviewConstant.skitchButtonTag + index
     }
 
-    func handleSkitchButtonTap(_ button: UIButton) {
+    @objc func handleSkitchButtonTap(_ button: UIButton) {
         let index = button.tag - PhotoPreviewConstant.skitchButtonTag
 
         UIView.animate(withDuration: 0.15, delay: 0, options: [.curveEaseInOut], animations: {
diff --git a/PhotoBrowserDemo.xcodeproj/project.pbxproj b/PhotoBrowserDemo.xcodeproj/project.pbxproj
index 2595070..2acc9b4 100644
--- a/PhotoBrowserDemo.xcodeproj/project.pbxproj
+++ b/PhotoBrowserDemo.xcodeproj/project.pbxproj
@@ -13,8 +13,9 @@
 		4A52D2131C72D13B001C257B /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 4A52D2121C72D13B001C257B /* Assets.xcassets */; };
 		4A52D2161C72D13B001C257B /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 4A52D2141C72D13B001C257B /* LaunchScreen.storyboard */; };
 		4A8EB7231CEF068D0065EAB0 /* Kingfisher.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4A6BC7BB1C770DE100DACDA5 /* Kingfisher.framework */; };
-		869D74FB1F6784CF00765F38 /* PhotoBrowser.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 86AEF72D1EDEB9D100034DBA /* PhotoBrowser.framework */; };
 		AC570BBF1E247C550083620C /* DetailViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = AC570BBE1E247C550083620C /* DetailViewController.swift */; };
+		D3F284BF1F96059000E8EE4D /* PhotoBrowser.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D3F284BE1F96059000E8EE4D /* PhotoBrowser.framework */; };
+		D3F284C01F96059000E8EE4D /* PhotoBrowser.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = D3F284BE1F96059000E8EE4D /* PhotoBrowser.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -24,6 +25,7 @@
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
+				D3F284C01F96059000E8EE4D /* PhotoBrowser.framework in Embed Frameworks */,
 			);
 			name = "Embed Frameworks";
 			runOnlyForDeploymentPostprocessing = 0;
@@ -41,6 +43,7 @@
 		4A6BC7BB1C770DE100DACDA5 /* Kingfisher.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Kingfisher.framework; path = Carthage/Build/iOS/Kingfisher.framework; sourceTree = "<group>"; };
 		86AEF72D1EDEB9D100034DBA /* PhotoBrowser.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = PhotoBrowser.framework; path = "../Library/Developer/Xcode/DerivedData/PhotoBrowser-atvddxmpufwrrkfytkysyblmhonv/Build/Products/Debug-iphonesimulator/PhotoBrowser.framework"; sourceTree = "<group>"; };
 		AC570BBE1E247C550083620C /* DetailViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DetailViewController.swift; sourceTree = "<group>"; };
+		D3F284BE1F96059000E8EE4D /* PhotoBrowser.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = PhotoBrowser.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -48,7 +51,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				869D74FB1F6784CF00765F38 /* PhotoBrowser.framework in Frameworks */,
+				D3F284BF1F96059000E8EE4D /* PhotoBrowser.framework in Frameworks */,
 				4A8EB7231CEF068D0065EAB0 /* Kingfisher.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -59,6 +62,7 @@
 		4A52D1FF1C72D13B001C257B = {
 			isa = PBXGroup;
 			children = (
+				D3F284BE1F96059000E8EE4D /* PhotoBrowser.framework */,
 				4A6BC7BB1C770DE100DACDA5 /* Kingfisher.framework */,
 				4A52D20A1C72D13B001C257B /* PhotoBrowserDemo */,
 				4A52D2091C72D13B001C257B /* Products */,
@@ -125,12 +129,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0720;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = Teambition;
 				TargetAttributes = {
 					4A52D2071C72D13B001C257B = {
 						CreatedOnToolsVersion = 7.2.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0900;
 					};
 				};
 			};
@@ -223,14 +227,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -253,7 +263,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -270,14 +280,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -294,7 +310,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
@@ -316,7 +332,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.Teambition.PhotoBrowserDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -333,7 +350,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.Teambition.PhotoBrowserDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
diff --git a/PhotoBrowserDemo.xcodeproj/xcshareddata/xcschemes/PhotoBrowserDemo.xcscheme b/PhotoBrowserDemo.xcodeproj/xcshareddata/xcschemes/PhotoBrowserDemo.xcscheme
index bc5e63c..bbaee33 100644
--- a/PhotoBrowserDemo.xcodeproj/xcshareddata/xcschemes/PhotoBrowserDemo.xcscheme
+++ b/PhotoBrowserDemo.xcodeproj/xcshareddata/xcschemes/PhotoBrowserDemo.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -55,6 +56,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/PhotoBrowserDemo/Base.lproj/LaunchScreen.storyboard b/PhotoBrowserDemo/Base.lproj/LaunchScreen.storyboard
index 2e721e1..c0c6e6e 100644
--- a/PhotoBrowserDemo/Base.lproj/LaunchScreen.storyboard
+++ b/PhotoBrowserDemo/Base.lproj/LaunchScreen.storyboard
@@ -1,7 +1,12 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="8150" systemVersion="15A204g" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13196" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8122"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13173"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
         <!--View Controller-->
@@ -13,10 +18,9 @@
                         <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <animations/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                     </view>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
diff --git a/PhotoBrowserDemo/Base.lproj/Main.storyboard b/PhotoBrowserDemo/Base.lproj/Main.storyboard
index ffb769e..7d21e75 100644
--- a/PhotoBrowserDemo/Base.lproj/Main.storyboard
+++ b/PhotoBrowserDemo/Base.lproj/Main.storyboard
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11762" systemVersion="16C67" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="kqD-hL-Vd7">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13196" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="kqD-hL-Vd7">
     <device id="retina4_7" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11757"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13173"/>
         <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
@@ -47,7 +47,7 @@
                     <navigationItem key="navigationItem" title="PhotoBrowser" id="lbC-Qz-mLi"/>
                     <connections>
                         <outlet property="imageView" destination="s3W-RR-y1R" id="YwW-Vv-2AE"/>
-                        <segue destination="AdW-L0-9Ke" kind="show" id="oyt-d5-YRk"/>
+                        <segue destination="AdW-L0-9Ke" kind="show" identifier="ShowDetailViewController" id="oyt-d5-YRk"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
@@ -90,7 +90,7 @@
                 <navigationController automaticallyAdjustsScrollViewInsets="NO" id="kqD-hL-Vd7" sceneMemberID="viewController">
                     <toolbarItems/>
                     <navigationBar key="navigationBar" contentMode="scaleToFill" misplaced="YES" id="xVk-61-M13">
-                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
                         <autoresizingMask key="autoresizingMask"/>
                     </navigationBar>
                     <nil name="viewControllers"/>
diff --git a/PhotoBrowserDemo/DetailViewController.swift b/PhotoBrowserDemo/DetailViewController.swift
index e24ae75..61abf98 100644
--- a/PhotoBrowserDemo/DetailViewController.swift
+++ b/PhotoBrowserDemo/DetailViewController.swift
@@ -31,11 +31,6 @@ class DetailViewController: UIViewController {
         super.viewWillDisappear(animated)
         navigationController?.navigationBar.removeObserver(self, forKeyPath: navigationBarHiddenKeyPath, context: &navigationBarKVOContext)
     }
-
-    override func didReceiveMemoryWarning() {
-        super.didReceiveMemoryWarning()
-        // Dispose of any resources that can be recreated.
-    }
 }
 
 // MARK: - KVO for NavigationBar
diff --git a/PhotoBrowserDemo/Info.plist b/PhotoBrowserDemo/Info.plist
index 40c6215..af70e57 100644
--- a/PhotoBrowserDemo/Info.plist
+++ b/PhotoBrowserDemo/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSPhotoLibraryAddUsageDescription</key>
+	<string>选择&quot;好&quot;来访问相册</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleExecutable</key>
@@ -15,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
+	<string>0.7.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
diff --git a/PhotoBrowserDemo/ViewController.swift b/PhotoBrowserDemo/ViewController.swift
index 375fa98..30357d3 100644
--- a/PhotoBrowserDemo/ViewController.swift
+++ b/PhotoBrowserDemo/ViewController.swift
@@ -21,15 +21,11 @@ class ViewController: UIViewController {
         imageView.addGestureRecognizer(gesture)
     }
 
-    override func didReceiveMemoryWarning() {
-        super.didReceiveMemoryWarning()
-    }
-
     func saveToAlbum(_ image: UIImage) {
         UIImageWriteToSavedPhotosAlbum(image, self, #selector(self.image(_:didFinishSavingWithError:contextInfo:)), nil)
     }
 
-    func image(_ image: UIImage, didFinishSavingWithError error:NSError?, contextInfo:UnsafeRawPointer) {
+    @objc func image(_ image: UIImage, didFinishSavingWithError error:NSError?, contextInfo:UnsafeRawPointer) {
         if error == nil {
             print("save success")
         } else {
@@ -39,7 +35,7 @@ class ViewController: UIViewController {
 }
 
 extension ViewController {
-    func displayPhotoBrowser() {
+    @objc func displayPhotoBrowser() {
         let thumbnail1 = UIImage.init(named: "thumbnail1")
         let photoUrl1 = URL.init(string: "https://www.teambition.com/api/works/575d0bbf93e0f8860d73d88e/download/IMG_0005.JPG.jpeg?signature=eyJhbGciOiJIUzI1NiJ9.eyJfd29ya0lkIjoiNTc1ZDBiYmY5M2UwZjg4NjBkNzNkODhlIiwiZmlsZUtleSI6IjExMGg2MzRhOTg3MDQ5MDJmNDY1MmJhZTYzYjI1MTQyZTUyMSIsIl91c2VySWQiOiI1MmE2Y2MyZGVmNjZiYzk4MGMwMDAzMTIiLCJleHAiOjE0ODIwNjA0ODgsInN0b3JhZ2UiOiJzdHJpa2VyLWh6In0.czjEgDdAKqqOm8fK8lDOiE7wA_5H48bh6phlomGQqWo")
         let thumbnail2 = UIImage.init(named: "thumbnail2")
diff --git a/README.md b/README.md
index 7317bd1..18625e5 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 ## Features
-A simple photo browser to display remote photos. [Kingfisher] (https://github.com/onevcat/Kingfisher) is used to download and cache images.
+A simple photo browser to display remote photos. [Kingfisher](https://github.com/onevcat/Kingfisher) is used to download and cache images.
 Support:
 
 * Double-tap to zoom out & zoom in
@@ -28,7 +28,7 @@ If Kingfisher is not used in your project, you have to **drag it your self into
 ## Run Demo
 
 ``` bash
-$ git clone git@github.com:teambition/PhotoBrowser.git
+$ git clone https://github.com/teambition/PhotoBrowser.git
 ```
 And then