Android实战技巧之十九：android studio导出jar包（Module）并获得手机信息

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发布时间：2019-06-18

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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：

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：

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