<h2><strong>写在前面</strong></h2>    <p>最近接到老大的一个需求，要求在手机端拦截微信的通知（Notification），从而获得联系人和内容。之后将联系人和内容发送到我们的硬件产品上，展示出来之后，再将我们想回复内容传给微信，并且发送给相应联系人。</p>    <p>老大还提示我需要用<strong>AccessibilityService</strong>去实现它，当然在此之前我并不知道<strong>AccessibilityService</strong>是什么鬼，不过没关系， <strong>just do IT</strong> ！</p>    <h2>AccessibilityService</h2>    <p><a href="/misc/goto?guid=4959675371626467387">AccessibilityService官方文档（需KX上网）</a></p>    <p>上面这个链接是AccessibilityService的官方文档，可以KX上网点进去了解下，我再给大家总结一下：</p>    <p>AccessibilityService是Android系统框架提供给安装在设备上应用的一个可选的导航反馈特性。AccessibilityService 可以替代应用与用户交流反馈，比如将文本转化为语音提示，或是用户的手指悬停在屏幕上一个较重要的区域时的触摸反馈等。</p>    <p>如果感觉上面的描述比较抽象，没关系，也许你见过下面这张图：</p>    <p style="text-align:center"><img src="https://simg.open-open.com/show/e481bb5f61fe20232b21271997cdb1a7.png"></p>    <p style="text-align:center">辅助功能中的服务</p>    <p>打开你手机的设置--辅助功能中，有很多APP提供的服务，他们都是基于AccessibilityService编写的，AccessibilityService可以侦听你的点击，长按，手势，通知栏的变化等。并且你可以通过很多种方式找到窗体中的EditText，Button等组件，去填充他们，去点击他们来帮你实现自动化的功能。</p>    <p>像360助手的自动安装功能，它就是侦听着系统安装的APP，然后找到“安装”按钮，实现了自动点击。微信自动抢红包功能，实现方式都是如此。</p>    <h2>配置AccessibilityService</h2>    <p>首先我们在res文件夹下创建xml文件夹，然后创建一个名为auto_reply_service_config的文件，一会我们会在清单文件中引用它。</p>    <p style="text-align:center"><img src="https://simg.open-open.com/show/9ed7620652acc71aa65713dcb616b1ee.png"></p>    <p style="text-align:center">AccessibilityService配置文件</p>    <p><strong>代码：</strong></p>    <pre>  <code class="language-java"><accessibility-service               xmlns:android="http://schemas.android.com/apk/res/android"     android:accessibilityEventTypes="typeNotificationStateChanged|typeWindowStateChanged"      android:accessibilityFeedbackType="feedbackGeneric"      android:accessibilityFlags="flagDefault"      android:canRetrieveWindowContent="true"      android:description="@string/accessibility_description"      android:notificationTimeout="100"      android:packageNames="com.tencent.mm" /></code></pre>    <p>这个文件表示我们对AccessibilityService服务未来侦听的行为做了一些配置，比如 <strong>typeNotificationStateChanged</strong> 和 <strong>typeWindowStateChanged</strong> 表示我们需要侦听通知栏的状态变化和窗体状态改变。<br> android:packageNames="com.tencent.mm" 这是微信的包名，表示我们只关心微信这一个应用。</p>    <p>代码不打算带着大家一行一行看了，如果有不明白的，去看看文档，或者下面回复我，我给大家解答~</p>    <h2>创建AccessibilityService</h2>    <p>下面贴出AccessibilityService类的全部代码，注释还算详尽，如有疑问，下方回复。</p>    <pre>  <code class="language-java">package com.ileja.autoreply;    import android.accessibilityservice.AccessibilityService;  import android.annotation.SuppressLint;  import android.app.ActivityManager;  import android.app.KeyguardManager;  import android.app.Notification;  import android.app.PendingIntent;  import android.content.ClipData;  import android.content.ClipboardManager;  import android.content.ComponentName;  import android.content.Context;  import android.content.Intent;  import android.os.Bundle;  import android.os.Handler;  import android.os.PowerManager;  import android.text.TextUtils;  import android.view.KeyEvent;  import android.view.accessibility.AccessibilityEvent;  import android.view.accessibility.AccessibilityNodeInfo;    import java.io.IOException;  import java.util.List;    public class AutoReplyService extends AccessibilityService {      private final static String MM_PNAME = "com.tencent.mm";      boolean hasAction = false;      boolean locked = false;      boolean background = false;      private String name;      private String scontent;      AccessibilityNodeInfo itemNodeinfo;      private KeyguardManager.KeyguardLock kl;      private Handler handler = new Handler();          /**       * 必须重写的方法，响应各种事件。       * @param event       */      @Override      public void onAccessibilityEvent(final AccessibilityEvent event) {          int eventType = event.getEventType();          android.util.Log.d("maptrix", "get event = " + eventType);          switch (eventType) {              case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED:// 通知栏事件                  android.util.Log.d("maptrix", "get notification event");                  List<CharSequence> texts = event.getText();                  if (!texts.isEmpty()) {                      for (CharSequence text : texts) {                          String content = text.toString();                          if (!TextUtils.isEmpty(content)) {                              if (isScreenLocked()) {                                  locked = true;                                  wakeAndUnlock();                                  android.util.Log.d("maptrix", "the screen is locked");                                  if (isAppForeground(MM_PNAME)) {                                      background = false;                                      android.util.Log.d("maptrix", "is mm in foreground");                                      sendNotifacationReply(event);                                      handler.postDelayed(new Runnable() {                                          @Override                                          public void run() {                                              sendNotifacationReply(event);                                              if (fill()) {                                                  send();                                              }                                          }                                      }, 1000);                                  } else {                                      background = true;                                      android.util.Log.d("maptrix", "is mm in background");                                      sendNotifacationReply(event);                                  }                              } else {                                  locked = false;                                  android.util.Log.d("maptrix", "the screen is unlocked");                                  // 监听到微信红包的notification，打开通知                                  if (isAppForeground(MM_PNAME)) {                                      background = false;                                      android.util.Log.d("maptrix", "is mm in foreground");                                      sendNotifacationReply(event);                                      handler.postDelayed(new Runnable() {                                          @Override                                          public void run() {                                              if (fill()) {                                                  send();                                              }                                          }                                      }, 1000);                                  } else {                                      background = true;                                      android.util.Log.d("maptrix", "is mm in background");                                      sendNotifacationReply(event);                                  }                              }                          }                      }                  }                  break;              case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:                  android.util.Log.d("maptrix", "get type window down event");                  if (!hasAction) break;                  itemNodeinfo = null;                  String className = event.getClassName().toString();                  if (className.equals("com.tencent.mm.ui.LauncherUI")) {                      if (fill()) {                          send();                      }else {                          if(itemNodeinfo != null){                              itemNodeinfo.performAction(AccessibilityNodeInfo.ACTION_CLICK);                              handler.postDelayed(new Runnable() {                                  @Override                                  public void run() {                                      if (fill()) {                                          send();                                      }                                      back2Home();                                      release();                                      hasAction = false;                                  }                              }, 1000);                              break;                          }                      }                  }                    //bring2Front();                  back2Home();                  release();                  hasAction = false;                  break;          }      }        /**       * 寻找窗体中的“发送”按钮，并且点击。       */      @SuppressLint("NewApi")      private void send() {          AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();          if (nodeInfo != null) {              List<AccessibilityNodeInfo> list = nodeInfo                      .findAccessibilityNodeInfosByText("发送");              if (list != null && list.size() > 0) {                  for (AccessibilityNodeInfo n : list) {                      if(n.getClassName().equals("android.widget.Button") && n.isEnabled())                      {                              n.performAction(AccessibilityNodeInfo.ACTION_CLICK);}                      }                } else {                  List<AccessibilityNodeInfo> liste = nodeInfo                          .findAccessibilityNodeInfosByText("Send");                  if (liste != null && liste.size() > 0) {                      for (AccessibilityNodeInfo n : liste) {                          if(n.getClassName().equals("android.widget.Button") && n.isEnabled())                          {                                   n.performAction(AccessibilityNodeInfo.ACTION_CLICK);}                          }                      }                  }              }              pressBackButton();          }        }        /**       * 模拟back按键       */      private void pressBackButton(){          Runtime runtime = Runtime.getRuntime();          try {              runtime.exec("input keyevent " + KeyEvent.KEYCODE_BACK);          } catch (IOException e) {              e.printStackTrace();          }      }        /**       *       * @param event       */      private void sendNotifacationReply(AccessibilityEvent event) {          hasAction = true;          if (event.getParcelableData() != null                  && event.getParcelableData() instanceof Notification) {              Notification notification = (Notification) event                      .getParcelableData();              String content = notification.tickerText.toString();              String[] cc = content.split(":");              name = cc[0].trim();              scontent = cc[1].trim();                android.util.Log.i("maptrix", "sender name =" + name);              android.util.Log.i("maptrix", "sender content =" + scontent);                  PendingIntent pendingIntent = notification.contentIntent;              try {                  pendingIntent.send();              } catch (PendingIntent.CanceledException e) {                  e.printStackTrace();              }          }      }        @SuppressLint("NewApi")      private boolean fill() {          AccessibilityNodeInfo rootNode = getRootInActiveWindow();          if (rootNode != null) {              return findEditText(rootNode, "正在忙,稍后回复你");          }          return false;      }          private boolean findEditText(AccessibilityNodeInfo rootNode, String content) {          int count = rootNode.getChildCount();            android.util.Log.d("maptrix", "root class=" + rootNode.getClassName() + ","+ rootNode.getText()+","+count);          for (int i = 0; i < count; i++) {              AccessibilityNodeInfo nodeInfo = rootNode.getChild(i);              if (nodeInfo == null) {                  android.util.Log.d("maptrix", "nodeinfo = null");                  continue;              }                android.util.Log.d("maptrix", "class=" + nodeInfo.getClassName());              android.util.Log.e("maptrix", "ds=" + nodeInfo.getContentDescription());              if(nodeInfo.getContentDescription() != null){                  int nindex = nodeInfo.getContentDescription().toString().indexOf(name);                  int cindex = nodeInfo.getContentDescription().toString().indexOf(scontent);                  android.util.Log.e("maptrix", "nindex=" + nindex + " cindex=" +cindex);                  if(nindex != -1){                      itemNodeinfo = nodeInfo;                      android.util.Log.i("maptrix", "find node info");                  }              }              if ("android.widget.EditText".equals(nodeInfo.getClassName())) {                  android.util.Log.i("maptrix", "==================");                  Bundle arguments = new Bundle();                  arguments.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT,                          AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD);                  arguments.putBoolean(AccessibilityNodeInfo.ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN,                          true);                  nodeInfo.performAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY,                          arguments);                  nodeInfo.performAction(AccessibilityNodeInfo.ACTION_FOCUS);                  ClipData clip = ClipData.newPlainText("label", content);                  ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);                  clipboardManager.setPrimaryClip(clip);                  nodeInfo.performAction(AccessibilityNodeInfo.ACTION_PASTE);                  return true;              }                if (findEditText(nodeInfo, content)) {                  return true;              }          }            return false;      }        @Override      public void onInterrupt() {        }        /**       * 判断指定的应用是否在前台运行       *       * @param packageName       * @return       */      private boolean isAppForeground(String packageName) {          ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);          ComponentName cn = am.getRunningTasks(1).get(0).topActivity;          String currentPackageName = cn.getPackageName();          if (!TextUtils.isEmpty(currentPackageName) && currentPackageName.equals(packageName)) {              return true;          }            return false;      }          /**       * 将当前应用运行到前台       */      private void bring2Front() {          ActivityManager activtyManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);          List<ActivityManager.RunningTaskInfo> runningTaskInfos = activtyManager.getRunningTasks(3);          for (ActivityManager.RunningTaskInfo runningTaskInfo : runningTaskInfos) {              if (this.getPackageName().equals(runningTaskInfo.topActivity.getPackageName())) {                  activtyManager.moveTaskToFront(runningTaskInfo.id, ActivityManager.MOVE_TASK_WITH_HOME);                  return;              }          }      }        /**       * 回到系统桌面       */      private void back2Home() {          Intent home = new Intent(Intent.ACTION_MAIN);            home.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);          home.addCategory(Intent.CATEGORY_HOME);            startActivity(home);      }          /**       * 系统是否在锁屏状态       *       * @return       */      private boolean isScreenLocked() {          KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);          return keyguardManager.inKeyguardRestrictedInputMode();      }        private void wakeAndUnlock() {          //获取电源管理器对象          PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);            //获取PowerManager.WakeLock对象，后面的参数|表示同时传入两个值，最后的是调试用的Tag          PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "bright");            //点亮屏幕          wl.acquire(1000);            //得到键盘锁管理器对象          KeyguardManager km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);          kl = km.newKeyguardLock("unLock");            //解锁          kl.disableKeyguard();        }        private void release() {            if (locked && kl != null) {              android.util.Log.d("maptrix", "release the lock");              //得到键盘锁管理器对象              kl.reenableKeyguard();              locked = false;          }      }  }</code></pre>    <p>接着配置清单文件，权限和service的配置比较重要。</p>    <pre>  <code class="language-xml"><?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.ileja.autoreply">        <uses-permission android:name="android.permission.DISABLE_KEYGUARD" />      <uses-permission android:name="android.permission.INTERNET" />      <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />      <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />      <uses-permission android:name="android.permission.BIND_ACCESSIBILITY_SERVICE" />      <uses-permission android:name="android.permission.GET_TASKS" />      <uses-permission android:name="android.permission.REORDER_TASKS" />      <uses-permission android:name="android.permission.WAKE_LOCK" />        <application          android:allowBackup="true"          android:icon="@mipmap/ic_launcher"          android:label="@string/app_name"          android:supportsRtl="true"          android:theme="@style/AppTheme">          <activity android:name=".MainActivity">              <intent-filter>                  <action android:name="android.intent.action.MAIN" />                    <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>            <service              android:name=".AutoReplyService"              android:enabled="true"              android:exported="true"              android:label="@string/app_name"              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/auto_reply_service_config"/>          </service>      </application>  </manifest></code></pre>    <p>为了使用某些必要的API，最低API level应该是18</p>    <p>运行程序，打开服务，看看效果如何把~</p>    <p style="text-align:center"><img src="https://simg.open-open.com/show/6683c6f185e45abd4a1d7dd7a1f7796a.png"></p>    <p style="text-align:center">打开辅助服务</p>    <p>接着用其他手机试着发送给我几条微信</p>    <p style="text-align:center"><img src="https://simg.open-open.com/show/a85446f4fdc1763966b051da8e9d3695.png"></p>    <p style="text-align:center">自动回复微信</p>    <p>可以看到，自动回复功能就实现了。</p>    <h2><strong>写在后面</strong></h2>    <p>代码没有给大家详细讲解，不过看注释应该可以看懂个大概。当微信程序切换到后台，或者锁屏（无锁屏密码）时，只要有通知出现，都可以实现自动回复。</p>    <p>关于<strong>AccessibilityService</strong>可以监控的行为非常多，所以我觉得可以实现各种各样炫酷的功能，不过我并不建议你打开某些流氓软件的AccessibilityService服务，因为很有可能造成一些安全问题，所以，自己动手写就安全多了嘛。</p>    <p><br> <a href="/misc/goto?guid=4959675371720738717">阅读原文</a></p>