diff --git a/HanziPinyin.xcodeproj/project.pbxproj b/HanziPinyin.xcodeproj/project.pbxproj
index d8525bd..1d15d6f 100644
--- a/HanziPinyin.xcodeproj/project.pbxproj
+++ b/HanziPinyin.xcodeproj/project.pbxproj
@@ -122,21 +122,22 @@
 		D395A11C1CC244BB00B76FB7 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0930;
+				LastUpgradeCheck = 1020;
 				ORGANIZATIONNAME = Teambition;
 				TargetAttributes = {
 					D395A1241CC244BB00B76FB7 = {
 						CreatedOnToolsVersion = 7.3;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1020;
 					};
 				};
 			};
 			buildConfigurationList = D395A11F1CC244BB00B76FB7 /* Build configuration list for PBXProject "HanziPinyin" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = D395A11B1CC244BB00B76FB7;
 			productRefGroup = D395A1261CC244BB00B76FB7 /* Products */;
@@ -179,6 +180,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -238,6 +240,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -304,8 +307,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -325,8 +327,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = Teambition.HanziPinyin;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/HanziPinyin.xcodeproj/xcshareddata/xcschemes/HanziPinyin.xcscheme b/HanziPinyin.xcodeproj/xcshareddata/xcschemes/HanziPinyin.xcscheme
index 90d572c..90ddbe7 100644
--- a/HanziPinyin.xcodeproj/xcshareddata/xcschemes/HanziPinyin.xcscheme
+++ b/HanziPinyin.xcodeproj/xcshareddata/xcschemes/HanziPinyin.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0930"
+   LastUpgradeVersion = "1020"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/HanziPinyin/HanziPinyin.swift b/HanziPinyin/HanziPinyin.swift
index ee712a8..1fd6666 100644
--- a/HanziPinyin/HanziPinyin.swift
+++ b/HanziPinyin/HanziPinyin.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 internal struct HanziCodePoint {
-    static let start:UInt32 = 0x4E00
+    static let start: UInt32 = 0x4E00
     static let end: UInt32 = 0x9FFF
 }
 
diff --git a/HanziPinyin/HanziPinyinResource.swift b/HanziPinyin/HanziPinyinResource.swift
index aaba030..9905c1a 100644
--- a/HanziPinyin/HanziPinyinResource.swift
+++ b/HanziPinyin/HanziPinyinResource.swift
@@ -13,7 +13,7 @@ private struct CacheKeys {
 }
 
 internal extension HanziPinyin {
-    internal func initializeResource() -> [String: String] {
+    func initializeResource() -> [String: String] {
         if let cachedPinyinTable = HanziPinyin.cachedObject(forKey: CacheKeys.unicodeToPinyin) as? [String: String] {
             return cachedPinyinTable
         } else {
diff --git a/HanziPinyin/String+HanziPinyin.swift b/HanziPinyin/String+HanziPinyin.swift
index f48cc2b..4f9a536 100644
--- a/HanziPinyin/String+HanziPinyin.swift
+++ b/HanziPinyin/String+HanziPinyin.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 public extension String {
-    public func toPinyin(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = " ") -> String {
+    func toPinyin(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = " ") -> String {
         var pinyinStrings = [String]()
         for unicodeScalar in unicodeScalars {
             let charCodePoint = unicodeScalar.value
@@ -30,7 +30,7 @@ public extension String {
         return pinyin
     }
 
-    public func toPinyin(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = " ", completion: @escaping ((_ pinyin: String) -> ())) {
+    func toPinyin(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = " ", completion: @escaping ((_ pinyin: String) -> ())) {
         DispatchQueue.global(qos: .default).async {
             let pinyin = self.toPinyin(withFormat: outputFormat, separator: separator)
             DispatchQueue.main.async {
@@ -39,7 +39,7 @@ public extension String {
         }
     }
 
-    public func toPinyinAcronym(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = "") -> String {
+    func toPinyinAcronym(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = "") -> String {
         var pinyinStrings = [String]()
         for unicodeScalar in unicodeScalars {
             let charCodePoint = unicodeScalar.value
@@ -61,7 +61,7 @@ public extension String {
         return pinyinAcronym
     }
 
-    public func toPinyinAcronym(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = "", completion: @escaping ((_ pinyinAcronym: String) -> ())) {
+    func toPinyinAcronym(withFormat outputFormat: PinyinOutputFormat = .default, separator: String = "", completion: @escaping ((_ pinyinAcronym: String) -> ())) {
         DispatchQueue.global(qos: .default).async {
             let pinyinAcronym = self.toPinyinAcronym(withFormat: outputFormat, separator: separator)
             DispatchQueue.main.async {
@@ -70,7 +70,7 @@ public extension String {
         }
     }
 
-    public var hasChineseCharacter: Bool {
+    var hasChineseCharacter: Bool {
         for unicodeScalar in unicodeScalars {
             let charCodePoint = unicodeScalar.value
             if HanziPinyin.isHanzi(ofCharCodePoint: charCodePoint) {
diff --git a/HanziPinyin/Supporting Files/Info.plist b/HanziPinyin/Supporting Files/Info.plist
index 587b5df..bc568f7 100644
--- a/HanziPinyin/Supporting Files/Info.plist	
+++ b/HanziPinyin/Supporting Files/Info.plist	
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.0.7</string>
+	<string>0.0.8</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
diff --git a/HanziPinyinExample.xcodeproj/project.pbxproj b/HanziPinyinExample.xcodeproj/project.pbxproj
index a50fa02..d043854 100644
--- a/HanziPinyinExample.xcodeproj/project.pbxproj
+++ b/HanziPinyinExample.xcodeproj/project.pbxproj
@@ -111,7 +111,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0730;
-				LastUpgradeCheck = 0930;
+				LastUpgradeCheck = 1020;
 				ORGANIZATIONNAME = Teambition;
 				TargetAttributes = {
 					D395A1051CC243DB00B76FB7 = {
@@ -122,7 +122,7 @@
 			};
 			buildConfigurationList = D395A1011CC243DB00B76FB7 /* Build configuration list for PBXProject "HanziPinyinExample" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
@@ -179,6 +179,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -235,6 +236,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -290,7 +292,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = Teambition.HanziPinyinExample;
 				PRODUCT_NAME = HanziPinyinExample;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -303,7 +305,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = Teambition.HanziPinyinExample;
 				PRODUCT_NAME = HanziPinyinExample;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/HanziPinyinExample.xcodeproj/xcuserdata/hongxin.xcuserdatad/xcschemes/HanziPinyinExample.xcscheme b/HanziPinyinExample.xcodeproj/xcuserdata/hongxin.xcuserdatad/xcschemes/HanziPinyinExample.xcscheme
index 105d801..bd25550 100644
--- a/HanziPinyinExample.xcodeproj/xcuserdata/hongxin.xcuserdatad/xcschemes/HanziPinyinExample.xcscheme
+++ b/HanziPinyinExample.xcodeproj/xcuserdata/hongxin.xcuserdatad/xcschemes/HanziPinyinExample.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0930"
+   LastUpgradeVersion = "1020"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/HanziPinyinExample/Info.plist b/HanziPinyinExample/Info.plist
index a052c5a..44dfdc5 100644
--- a/HanziPinyinExample/Info.plist
+++ b/HanziPinyinExample/Info.plist
@@ -15,11 +15,11 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.0.7</string>
+	<string>0.0.8</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>7</string>
+	<string>8</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>UILaunchStoryboardName</key>