本文以微信版本6.7.3为例进行分析有hook， 大部分做微信机器人的话，首先要实时抓取微信的消息，在这里展示三种方式对微信的消息进行hook：

1.基于UI层拉取加载进行监听

2.基于微信dao层调用的保存进行监听

3.基于数据库的插入保存进行监听 这三层各有各的特点请自行选用

package cn.robot;

import android.content.ContentValues;

import android.database.Cursor;

import de.robv.android.xposed.XC_MethodHook;

import de.robv.android.xposed.XposedHelpers;

import de.robv.android.xposed.callbacks.XC_LoadPackage;

import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;

import static de.robv.android.xposed.XposedBridge.log;

/**

* author: zhao .

* date: 2019/4/19

*/

public class WechatTest {

/**

* 注册接收消息的监听，处理UI触发流程

*/

public static void uiMsgListener(XC_LoadPackage.LoadPackageParam lpparam) {

log("uiMsgListener 开始");

Object[] arrayOfObject = new Object[2];

arrayOfObject[0] = Cursor.class;

arrayOfObject[1] = new XC_MethodHook() {

protected void afterHookedMethod(MethodHookParam methodHookParam) throws XmlPullParserException, IOException {

//0代表别人发的消息，1代表是自己发的消息

int field_isSend = ((Integer) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_isSend")).intValue();

//消息类型：1是文本...参考wechat_manager里的消息类型定义

int field_type = ((Integer) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_type")).intValue();

//微信服务器端的消息id

Object field_msgSvrId = XposedHelpers.getObjectField(methodHookParam.thisObject, "field_msgSvrId");

//消息内容

String field_content = (String) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_content");

String field_talker = (String) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_talker");

//消息创建时间

long field_createTime = ((Long) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_createTime")).longValue();

log("uiMsgListener field_isSend:" + field_isSend + "--field_type:" + field_type + "--field_msgSvrId--" + field_msgSvrId + "--field_talker--" + field_talker + "--field_content--" + field_content);

}

};

XposedHelpers.findAndHookMethod("com.tencent.mm.storage.bi", lpparam.classLoader, "d", arrayOfObject);

log("uiMsgListener 结束");

}

/**

* 插入消息监听 处理微信 dao层

*/

public static void insertMsgDAOListener(XC_LoadPackage.LoadPackageParam lpparam) {

log("insertMsgDAOListener 开始");

Class> au = XposedHelpers.findClass("com.tencent.mm.storage.bi", lpparam.classLoader);

Object[] arrayOfObject = new Object[3];

arrayOfObject[0] = au;

arrayOfObject[1] = boolean.class;

arrayOfObject[2] = new XC_MethodHook() {

protected void afterHookedMethod(MethodHookParam paramAnonymousMethodHookParam) throws XmlPullParserException, IOException {

Object au = paramAnonymousMethodHookParam.args[0];

if (au == null) {

return;

}

int field_isSend = ((Integer) XposedHelpers.getObjectField(au, "field_isSend")).intValue();

int field_type = ((Integer) XposedHelpers.getObjectField(au, "field_type")).intValue();

Object field_msgSvrId = XposedHelpers.getObjectField(au, "field_msgSvrId");

String field_content = (String) XposedHelpers.getObjectField(au, "field_content");

String field_talker = (String) XposedHelpers.getObjectField(au, "field_talker");

log("insertMsgDAOListener field_isSend:" + field_isSend + "--field_type:" + field_type + "--field_msgSvrId--" + field_msgSvrId + "--field_talker--" + field_talker + "--field_content--" + field_content);

}

};

XposedHelpers.findAndHookMethod(XposedHelpers.findClass("com.tencent.mm.storage.bj", lpparam.classLoader), "b", arrayOfObject);

log("insertMsgDAOListener 结束");

}

/**

* 插入消息监听

*/

public static void insertMsgDBListener(XC_LoadPackage.LoadPackageParam lpparam) {

log("insertMsgDBListener 开始");

Object[] arrayOfObject = new Object[4];

arrayOfObject[0] = String.class;

arrayOfObject[1] = String.class;

arrayOfObject[2] = ContentValues.class;

arrayOfObject[3] = new XC_MethodHook() {

protected void afterHookedMethod(MethodHookParam paramAnonymousMethodHookParam) throws XmlPullParserException, IOException {

log("insertMsgDBListener 0"+paramAnonymousMethodHookParam.args[0]);

log("insertMsgDBListener 1"+paramAnonymousMethodHookParam.args[1]);

log("insertMsgDBListener 2"+paramAnonymousMethodHookParam.args[2]);

}

};

XposedHelpers.findAndHookMethod(XposedHelpers.findClass("com.tencent.wcdb.database.SQLiteDatabase", lpparam.classLoader), "insert", arrayOfObject);

log("insertMsgDBListener 结束");

}

}