基于微信红包插件的原理实现android任何APP自动发送评论（已开源）

背景

地址：https://github.com/huijimuhe/postman

核心就是android的AccessibilityService，回复功能api需要23以上版本才行。

其实很像在做单元测试。你可以有n种方式实现发帖功能，这只是一个比较邪火的方式，亲测过一次，可行。这里我以网易新闻客户端举例。

模拟你在手机端的物理动作：选择新闻-》回复-》退回新闻列表-》进入下一个新闻-》回复-》退回新闻列表刷新-》进入-》回复....

做的不精细，只是探究到底可不可行。你可以用在任何APP中自动发消息，只要没有验证码。

你要拿来玩，请抱着一颗开心的心情。

原理

直接在github上开源的微信红包插件改的，红包插件项目和你需要了解的几篇文章在这里

https://github.com/geeeeeeeeek/WeChatLuckyMoney

http://www.xuebuyuan.com/2061597.html

http://www.xuebuyuan.com/2061595.html

http://developer.android.com/training/accessibility/service.html

package com.huijimuhe.pman.services;

import android.accessibilityservice.AccessibilityService;
import android.content.ComponentName;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;

import com.huijimuhe.pman.utils.PowerUtil;

import java.util.ArrayList;
import java.util.List;

public class PostService extends AccessibilityService implements SharedPreferences.OnSharedPreferenceChangeListener {

    private static final String TAG = "PostService";

    private static final String MAIN_ACT = "MainActivity";
    private static final String DETAIL_ACT = "NewsPageActivity";
    private static final String BASE_ACT = "BaseActivity";

    private static final int MSG_BACK = 159;
    private static final int MSG_REFRESH_NEW_LIST = 707;
    private static final int MSG_READ_NEWS = 19;
    private static final int MSG_POST_COMMENT = 211;
    private static final int MSG_REFRESH_COMPLETE = 22;
    private static final int MSG_FINISH_COMMENT = 59;

    private String currentActivityName = MAIN_ACT;
    private HandlerEx mHandler = new HandlerEx();

    private boolean mIsMutex = false;
    private int mReadCount = 0;
    private List<String> readedNews = new ArrayList<>();
    private PowerUtil powerUtil;
    private SharedPreferences sharedPreferences;

    /**
     * AccessibilityEvent
     *
     * @param event 事件
     */
    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {

        if (sharedPreferences == null) return;

        setCurrentActivityName(event);
        watchMain(event);
        watchBasic(event);
        watchDetail(event);
    }

    private void watchMain(AccessibilityEvent event) {
        //新闻列表
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && currentActivityName.contains(MAIN_ACT)) {
            if (mReadCount > 4) {
                //如果读取完了都没有新的就刷新
                Log.d(TAG, "新闻已读取完,需要刷新列表");
                //需要刷新列表了
                mHandler.sendEmptyMessage(MSG_REFRESH_NEW_LIST);
            } else {
                mHandler.sendEmptyMessage(MSG_READ_NEWS);
            }
        }
    }

    private void watchDetail(AccessibilityEvent event) {
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && currentActivityName.contains(DETAIL_ACT)) {
            //添加评论
            mHandler.sendEmptyMessage(MSG_POST_COMMENT);
        }
    }

    private void watchBasic(AccessibilityEvent event) {
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && currentActivityName.contains(BASE_ACT)) {
            Log.d(TAG, "进入非新闻页,即将退出");
            mHandler.sendEmptyMessage(MSG_BACK);
            mHandler.sendEmptyMessage(MSG_BACK);
        }
    }

    private void refreshList() {
        List<AccessibilityNodeInfo> nodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("android:id/list");
        for (AccessibilityNodeInfo node : nodes) {
            //页面是否加载完成
            if (node == null) return;
            //执行刷新
            node.performAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
        }
        //重新开始读取新闻
        mHandler.sendEmptyMessage(MSG_REFRESH_COMPLETE);
    }

    private void enterDetailAct() {

        //获取列表items
        List<AccessibilityNodeInfo> nodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/perfect_item");

        for (AccessibilityNodeInfo node : nodes) {
            //页面是否加载完成
            if (node == null) return;

            //获取列表item的标题
            List<AccessibilityNodeInfo> titles = node.findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/title");

            for (AccessibilityNodeInfo title : titles) {

                //检查是否已读取
                if (!readedNews.contains(title.getText().toString())) {
                    //点击读取该新闻
                    readedNews.add(title.getText().toString());
                    node.getParent().performAction(AccessibilityNodeInfo.ACTION_CLICK);
                    Log.d(TAG, "进入新闻:" + title.getText().toString());
                    mReadCount++;
                    //进入一个就停止
                    return;
                }
            }
        }
    }

    private void postComment() {
        //激活输入框
        List<AccessibilityNodeInfo> nodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/mock_reply_edit");
        for (AccessibilityNodeInfo node : nodes) {

            //页面是否加载完成
            if (node == null) return;

            node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
        }

        //输入内容
        List<AccessibilityNodeInfo> editNodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/reply_edit");
        for (AccessibilityNodeInfo node : editNodes) {

            //页面是否加载完成
            if (node == null) return;

            Bundle arguments = new Bundle();
            arguments.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE, "抽烟的人最讨厌了");
            node.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, arguments);
        }

//        //回复按钮
//        List<AccessibilityNodeInfo> postNodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/reply");
//        for (AccessibilityNodeInfo node : postNodes) {
//           //页面是否加载完成
//           if (node == null) return;
//           node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
//        }

        //退出
        mHandler.sendEmptyMessage(MSG_FINISH_COMMENT);

        Log.d(TAG, "评论已发表");
    }

    /**
     * 设置当前页面名称
     *
     * @param event
     */
    private void setCurrentActivityName(AccessibilityEvent event) {

        if (event.getEventType() != AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
            return;
        }

        try {
            ComponentName componentName = new ComponentName(event.getPackageName().toString(), event.getClassName().toString());

            getPackageManager().getActivityInfo(componentName, 0);
            currentActivityName = componentName.flattenToShortString();
            Log.d(TAG, "<--pkgName-->" + event.getPackageName().toString());
            Log.d(TAG, "<--className-->" + event.getClassName().toString());
            Log.d(TAG, "<--currentActivityName-->" + currentActivityName);
        } catch (PackageManager.NameNotFoundException e) {
            currentActivityName = MAIN_ACT;
        }
    }

    @Override
    public void onDestroy() {
        this.powerUtil.handleWakeLock(false);
        super.onDestroy();
    }

    @Override
    public void onInterrupt() {

    }

    @Override
    public void onServiceConnected() {
        super.onServiceConnected();
        this.watchFlagsFromPreference();
    }

    /**
     * 屏幕是否常亮
     */
    private void watchFlagsFromPreference() {
        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
        sharedPreferences.registerOnSharedPreferenceChangeListener(this);

        this.powerUtil = new PowerUtil(this);
        Boolean watchOnLockFlag = sharedPreferences.getBoolean("pref_watch_on_lock", false);
        this.powerUtil.handleWakeLock(watchOnLockFlag);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
        if (key.equals("pref_watch_on_lock")) {
            Boolean changedValue = sharedPreferences.getBoolean(key, false);
            this.powerUtil.handleWakeLock(changedValue);
        }
    }

    /**
     * 处理机
     */
    private class HandlerEx extends Handler {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                //后退
                case MSG_BACK:
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            performGlobalAction(GLOBAL_ACTION_BACK);
                        }
                    }, 1000);
                    break;
                //结束评论
                case MSG_FINISH_COMMENT:
                    for (int i = 0; i < 4; i++) {
                        new Handler().postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                performGlobalAction(GLOBAL_ACTION_BACK);
                            }
                        }, 2000 +i*500);
                    }
                    break;
                //刷新列表
                case MSG_REFRESH_NEW_LIST:
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            refreshList();
                        }
                    }, 3000);
                    break;
                //结束刷新
                case MSG_REFRESH_COMPLETE:
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            mReadCount = 0;
                            enterDetailAct();
                        }
                    }, 3000);
                    break;
                //进入新闻页
                case MSG_READ_NEWS:
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            enterDetailAct();
                        }
                    }, 3000);
                    break;
                //发送评论
                case MSG_POST_COMMENT:
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            postComment();
                        }
                    }, 3000);
                    break;
            }
        }
    }
}

在开始写代码前，你应该至少阅读了之前几篇文章和微信红包插件的代码，然后还应该掌握用Android Device Monitor查看UI树的工具使用。（最近开始研究iOS逆向，这个确实比reveal和cycript方便太多）

粗略实现步骤

1.manifest中申明服务

 <service
                android:name=".services.PostService"
                android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
            <intent-filter>
                <action android:name="android.accessibilityservice.AccessibilityService"/>
            </intent-filter>
            <meta-data android:name="android.accessibilityservice"
                       android:resource="@xml/accessible_service_config"/>
        </service>

 2.设定你需要监控的app包名来过滤，在/res/xml/accessible_service_config.xml中

<accessibility-service
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:description="@string/app_description"
    android:accessibilityEventTypes="typeWindowStateChanged|typeWindowContentChanged"
    android:accessibilityFeedbackType="feedbackAllMask"
    android:packageNames="com.netease.newsreader.activity"
    android:notificationTimeout="10"
    android:settingsActivity="com.huijimuhe.pman.activities.SettingsActivity"
    android:accessibilityFlags="flagIncludeNotImportantViews|flagDefault"
    android:canRetrieveWindowContent="true"/>

比如网易的，android:packageNames="com.netease.newsreader.activity"

3.在AccessibleService中实现对事件的监听 

  @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {

        if (sharedPreferences == null) return;

        setCurrentActivityName(event);
        watchMain(event);
        watchBasic(event);
        watchDetail(event);
    }
/**
 * 设置当前页面名称
 *
 * @param event
 */
private void setCurrentActivityName(AccessibilityEvent event) {

    if (event.getEventType() != AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
        return;
    }

    try {
        ComponentName componentName = new ComponentName(event.getPackageName().toString(), event.getClassName().toString());

        getPackageManager().getActivityInfo(componentName, 0);
        currentActivityName = componentName.flattenToShortString();
        Log.d(TAG, "<--pkgName-->" + event.getPackageName().toString());
        Log.d(TAG, "<--className-->" + event.getClassName().toString());
        Log.d(TAG, "<--currentActivityName-->" + currentActivityName);
    } catch (PackageManager.NameNotFoundException e) {
        currentActivityName = MAIN_ACT;
    }
}

4.监控是否是新闻列表，可以设定个页面刷新阀值

  //新闻列表
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && currentActivityName.contains(MAIN_ACT)) {
            if (mReadCount > 4) {
                //如果读取完了都没有新的就刷新
                Log.d(TAG, "新闻已读取完,需要刷新列表");
                //需要刷新列表了
                mHandler.sendEmptyMessage(MSG_REFRESH_NEW_LIST);
            } else {
                mHandler.sendEmptyMessage(MSG_READ_NEWS);
            }
        }

5.监控是否是新闻详情

    private void watchDetail(AccessibilityEvent event) {
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && currentActivityName.contains(DETAIL_ACT)) {
            //添加评论
            mHandler.sendEmptyMessage(MSG_POST_COMMENT);
        }
    }

6监控是否广告或其他专题，不做操作

    private void watchBasic(AccessibilityEvent event) {
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED && currentActivityName.contains(BASE_ACT)) {
            Log.d(TAG, "进入非新闻页,即将退出");
            mHandler.sendEmptyMessage(MSG_BACK);
            mHandler.sendEmptyMessage(MSG_BACK);
        }
    }

7.回复评论

    private void postComment() {
        //激活输入框
        List<AccessibilityNodeInfo> nodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/mock_reply_edit");
        for (AccessibilityNodeInfo node : nodes) {

            //页面是否加载完成
            if (node == null) return;

            node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
        }

        //输入内容
        List<AccessibilityNodeInfo> editNodes = getRootInActiveWindow().findAccessibilityNodeInfosByViewId("com.netease.newsreader.activity:id/reply_edit");
        for (AccessibilityNodeInfo node : editNodes) {

            //页面是否加载完成
            if (node == null) return;

            Bundle arguments = new Bundle();
            arguments.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE, "抽烟的人最讨厌了");
            node.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, arguments);
        }

        //退出
        mHandler.sendEmptyMessage(MSG_FINISH_COMMENT);

        Log.d(TAG, "评论已发表");
    }

总体思路是通过postDelay来实现操作的间隔，其他的请自己阅读代码，我只测试了下思路是否可行就没有继续延伸下去了。

大家不要留言说我简单事情做那么复杂。用物理方式（现在回头看倒觉得很像单元测试）实现回复，真实性是100%，发贴机你要倒腾一个别人家服务器看不出作弊的，估计更费劲吧。

如果你觉得python写脚本很酷或者直接用fiddler抓包然后写个发帖器都行。我这还有个用Tesseract-OCR做验证码识别的winform。

做这个只是当时觉得红包插件原理很酷，可以有点其他玩法，我也确实倒腾了一个，也开源了https://github.com/huijimuhe/focus

要是开开脑洞，比如不停的微信给欠债老板发消息让还钱啥的，这种插件倒是很能气死他，哈哈哈哈。

要搞什么推广（尤其是卖面膜的）应该靠金主，而不是这个，哈哈哈哈。

P.S. 
自己在做独立开发，希望广结英豪，尤其是像我一样脑子短路不用react硬拼anroid、ios原生想干点什么的朋友。

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