AS中并没有独立的Module 工程，但是可以在普通的Project中加入Module。所谓的Module就是我们通常所指的模块化的一个单元，并常常以jar包的形式存在。下面以一个获取手机信息的例子演示AS中的模块化。 ## 一、项目中新建Module File—>New Module，详细见下图。       ## 二、新建Java类 新建一个PhoneInfo类，内容如下： ~~~ package com.linc.mylibrary; import android.content.Context; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Build; import android.telephony.TelephonyManager; import android.text.format.Formatter; import android.util.Log; import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; /** * Created by linc on 15-3-19. */ public class PhoneInfo { private String TAG = "PhoneInfo"; private Context mContext; private TelephonyManager mPhoneManager; public PhoneInfo(Context context) { mContext = context; mPhoneManager = (TelephonyManager)mContext.getSystemService(Context.TELEPHONY_SERVICE); } public String getDeviceId() { return mPhoneManager.getDeviceId(); } public String getPhoneModule() { return Build.MODEL; } public String getSerialNumber() { return Build.SERIAL; } public String getPhoneNumber() { return mPhoneManager.getLine1Number(); } public String getMacAddress(){ String result = ""; WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE); WifiInfo wifiInfo = wifiManager.getConnectionInfo(); result = wifiInfo.getMacAddress(); Log.i(TAG, "macAdd:" + result); return result; } public String[] getCpuInfo() { String str1 = "/proc/cpuinfo"; String str2 = ""; String[] cpuInfo = {"", ""}; //1-cpu型号 //2-cpu频率 String[] arrayOfString; try { FileReader fr = new FileReader(str1); BufferedReader localBufferedReader = new BufferedReader(fr, 8192); str2 = localBufferedReader.readLine(); arrayOfString = str2.split("\\s+"); for (int i = 2; i < arrayOfString.length; i++) { cpuInfo[0] = cpuInfo[0] + arrayOfString[i] + " "; } str2 = localBufferedReader.readLine(); arrayOfString = str2.split("\\s+"); cpuInfo[1] += arrayOfString[2]; localBufferedReader.close(); } catch (IOException e) { } Log.i(TAG, "cpuinfo:" + cpuInfo[0] + " " + cpuInfo[1]); return cpuInfo; } public String getTotalMemory() { String str1 = "/proc/meminfo";// 系统内存信息文件 String str2; String[] arrayOfString; long initial_memory = 0; try { FileReader localFileReader = new FileReader(str1); BufferedReader localBufferedReader = new BufferedReader( localFileReader, 8192); str2 = localBufferedReader.readLine();// 读取meminfo第一行，系统总内存大小 arrayOfString = str2.split("\\s+"); for (String num : arrayOfString) { Log.i(str2, num + "\t"); } initial_memory = Integer.valueOf(arrayOfString[1]).intValue() * 1024;// 获得系统总内存，单位是KB，乘以1024转换为Byte localBufferedReader.close(); } catch (IOException e) { } return Formatter.formatFileSize(mContext, initial_memory);// Byte转换为KB或者MB，内存大小规格化 } } ~~~ 并在Module的AndroidManifest文件中加入两个权限： ~~~ <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> ~~~ ## 三、app中引入此module 在app的build.gradle中加入此module的dependency，如下： ~~~ dependencies { compile 'com.android.support:appcompat-v7:21.0.3' compile project(':mylibrary') } ~~~ 在app的MainActivity中加入测试代码： ~~~ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); PhoneInfo info = new PhoneInfo(this); Log.d(TAG,"devices id: "+info.getDeviceId()); Log.d(TAG,"getPhoneModule: "+info.getPhoneModule()); Log.d(TAG,"getSerialNumber: "+info.getSerialNumber()); Log.d(TAG,"getPhoneNumber: "+info.getPhoneNumber()); Log.d(TAG,"getMacAddress: "+info.getMacAddress()); Log.d(TAG,"getCpuInfo: "+info.getCpuInfo()); Log.d(TAG,"getTotalMemory: "+info.getTotalMemory()); } ~~~ ## 四、jar的生成 项目编译之后jar会在下面的目录找到： ~~~ ./mylibrary/build/intermediates/bundles/debug/classes.jar ./mylibrary/build/intermediates/bundles/release/classes.jar ~~~ ## 五、Module的移除 先要在File—>Project Structure中将此module“减“掉后才能在项目中Module右键的Delete键可用。   参考：  [http://www.cnblogs.com/wuya/p/android-studio-gradle-export-jar-assets.html](http://www.cnblogs.com/wuya/p/android-studio-gradle-export-jar-assets.html)  [http://www.cnblogs.com/helloandroid/articles/2210334.html](http://www.cnblogs.com/helloandroid/articles/2210334.html)  [http://blog.csdn.net/hyr83960944/article/details/37519299](http://blog.csdn.net/hyr83960944/article/details/37519299)