AS中并没有独立的Module 工程，可是能够在普通的Project中增加Module。所谓的Module就是我们通常所指的模块化的一个单元。并经常以jar包的形式存在。以下以一个获取手机信息的样例演示AS中的模块化。

一、项目中新建Module

File—>New Module，具体见下图。

二、新建Java类

新建一个PhoneInfo类，内容例如以下：

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文件里增加两个权限：

    <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中增加此module的dependency。例如以下：

dependencies {

    compile 'com.android.support:appcompat-v7:21.0.3'

    compile project(':mylibrary')

}

在app的MainActivity中增加測试代码：

    @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会在以下的文件夹找到：

./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“掉后才干在项目中Module右键的Delete键可用。

參考：

http://www.cnblogs.com/wuya/p/android-studio-gradle-export-jar-assets.html

http://www.cnblogs.com/helloandroid/articles/2210334.html

http://blog.csdn.net/hyr83960944/article/details/37519299