diff --git a/myutils/.gitignore b/myutils/.gitignore
new file mode 100644
index 0000000000..796b96d1c4
--- /dev/null
+++ b/myutils/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/myutils/build.gradle b/myutils/build.gradle
new file mode 100644
index 0000000000..b9a52bf7d3
--- /dev/null
+++ b/myutils/build.gradle
@@ -0,0 +1,34 @@
+apply plugin: 'com.android.library'
+
+android {
+ compileSdkVersion 26
+
+
+
+ defaultConfig {
+ minSdkVersion 15
+ targetSdkVersion 26
+ versionCode 1
+ versionName "1.0"
+
+ testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+ }
+
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+ }
+ }
+
+}
+
+dependencies {
+ implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+ implementation 'com.android.support:appcompat-v7:26.1.0'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'com.android.support.test:runner:1.0.1'
+ androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+}
diff --git a/myutils/proguard-rules.pro b/myutils/proguard-rules.pro
new file mode 100644
index 0000000000..f1b424510d
--- /dev/null
+++ b/myutils/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/myutils/src/androidTest/java/com/sun/myutils/ExampleInstrumentedTest.java b/myutils/src/androidTest/java/com/sun/myutils/ExampleInstrumentedTest.java
new file mode 100644
index 0000000000..b4dda6d368
--- /dev/null
+++ b/myutils/src/androidTest/java/com/sun/myutils/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.sun.myutils;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see Testing documentation
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+ @Test
+ public void useAppContext() throws Exception {
+ // Context of the app under test.
+ Context appContext = InstrumentationRegistry.getTargetContext();
+
+ assertEquals("com.sun.myutils.test", appContext.getPackageName());
+ }
+}
diff --git a/myutils/src/main/AndroidManifest.xml b/myutils/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000..8811441e47
--- /dev/null
+++ b/myutils/src/main/AndroidManifest.xml
@@ -0,0 +1,2 @@
+
diff --git a/myutils/src/main/java/com/sun/myutils/Installation.java b/myutils/src/main/java/com/sun/myutils/Installation.java
new file mode 100644
index 0000000000..1b79abb8b2
--- /dev/null
+++ b/myutils/src/main/java/com/sun/myutils/Installation.java
@@ -0,0 +1,47 @@
+package com.sun.myutils;
+
+import android.content.Context;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.util.UUID;
+
+/**
+ * Created by Administrator on 2018/1/2.
+ */
+
+public class Installation {
+ private static String sID = null;
+ private static final String INSTALLATION = "INSTALLATION";
+
+ public synchronized static String id(Context context) {
+ if (sID == null) {
+ File installation = new File(context.getFilesDir(), INSTALLATION);
+ try {
+ if (!installation.exists())
+ writeInstallationFile(installation);
+ sID = readInstallationFile(installation);
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+ return sID;
+ }
+
+ private static String readInstallationFile(File installation) throws IOException {
+ RandomAccessFile f = new RandomAccessFile(installation, "r");
+ byte[] bytes = new byte[(int) f.length()];
+ f.readFully(bytes);
+ f.close();
+ return new String(bytes);
+ }
+
+ private static void writeInstallationFile(File installation) throws IOException {
+ FileOutputStream out = new FileOutputStream(installation);
+ String id = UUID.randomUUID().toString();
+ out.write(id.getBytes());
+ out.close();
+ }
+}
diff --git a/myutils/src/main/res/values/strings.xml b/myutils/src/main/res/values/strings.xml
new file mode 100644
index 0000000000..9081883473
--- /dev/null
+++ b/myutils/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+
+ MyUtils
+
diff --git a/myutils/src/test/java/com/sun/myutils/ExampleUnitTest.java b/myutils/src/test/java/com/sun/myutils/ExampleUnitTest.java
new file mode 100644
index 0000000000..bec38aaf5a
--- /dev/null
+++ b/myutils/src/test/java/com/sun/myutils/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.sun.myutils;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see Testing documentation
+ */
+public class ExampleUnitTest {
+ @Test
+ public void addition_isCorrect() throws Exception {
+ assertEquals(4, 2 + 2);
+ }
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index 7e181230c0..d940d9fc19 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,3 +1,3 @@
-include ':app',
+include ':app', ':myutils',
':utilcode',
':subutil'