public class QHBAccessibilityService extends AccessibilityService {

 /**
 * 当启动服务的时候就会被调用
 */
 @Override
 protected void onServiceConnected() {
 super.onServiceConnected();
 }

 /**
 * 监听窗口变化的回调
 */
 @Override
 public void onAccessibilityEvent(AccessibilityEvent event) {
 int eventType = event.getEventType();
 //根据事件回调类型进行处理
 }

 /**
 * 中断服务的回调
 */
 @Override
 public void onInterrupt() {

 }
}

<service
 android:name=".AccessibilityService.QHBAccessibilityService"
 android:enabled="true"
 android:exported="true"
 android:label="@string/label"
 android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
 <intent-filter>
 <action android:name="android.accessibilityservice.AccessibilityService" />
 </intent-filter>
</service>

<service
 android:name=".AccessibilityService.QHBAccessibilityService"
 android:enabled="true"
 android:exported="true"
 android:label="@string/label"
 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/accessibility_service_config" />
</service>

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
 android:accessibilityEventTypes="typeNotificationStateChanged|typeWindowStateChanged|typeWindowContentChanged|typeWindowsChanged"
 android:accessibilityFeedbackType="feedbackGeneric"
 android:accessibilityFlags="flagDefault"
 android:canRetrieveWindowContent="true"
 android:description="@string/description"
 android:notificationTimeout="100"
 android:packageNames="com.tencent.mm" />

private void settingAccessibilityInfo() {
 String[] packageNames = {"com.tencent.mm"};
 AccessibilityServiceInfo mAccessibilityServiceInfo = new AccessibilityServiceInfo();
 // 响应事件的类型，这里是全部的响应事件（长按，单击，滑动等）
 mAccessibilityServiceInfo.eventTypes = AccessibilityEvent.TYPES_ALL_MASK;
 // 反馈给用户的类型，这里是语音提示
 mAccessibilityServiceInfo.feedbackType = AccessibilityServiceInfo.FEEDBACK_SPOKEN;
 // 过滤的包名
 mAccessibilityServiceInfo.packageNames = packageNames;
 setServiceInfo(mAccessibilityServiceInfo);
}

Intent intent = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);
startActivity(intent);

@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
 int eventType = event.getEventType();
 //根据事件回调类型进行处理
 switch (eventType) {
 //当通知栏发生改变时
 case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED:

  break;
 //当窗口的状态发生改变时
 case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:

  break;
 }
}

//通过文本找到对应的节点集合
List<AccessibilityNodeInfo> list = nodeInfo.findAccessibilityNodeInfosByText(text);
//通过控件ID找到对应的节点集合，如com.tencent.mm:id/gd
List<AccessibilityNodeInfo> list = nodeInfo.findAccessibilityNodeInfosByViewId(clickId);

//模拟点击
accessibilityNodeInfo.performAction(AccessibilityNodeInfo.ACTION_CLICK);
//模拟长按
accessibilityNodeInfo.performAction(AccessibilityNodeInfo.ACTION_LONG_CLICK);
//模拟获取焦点
accessibilityNodeInfo.performAction(AccessibilityNodeInfo.ACTION_FOCUS);
//模拟粘贴
accessibilityNodeInfo.performAction(AccessibilityNodeInfo.ACTION_PASTE);

/**
 * =====作者=====
 * 许英俊
 * =====时间=====
 * 2016/11/19.
 */
public class QHBAccessibilityService extends AccessibilityService {

 private List<AccessibilityNodeInfo> parents;

 /**
  * 当启动服务的时候就会被调用
  */
 @Override
 protected void onServiceConnected() {
  super.onServiceConnected();
  parents = new ArrayList<>();
 }

 /**
  * 监听窗口变化的回调
  */
 @Override
 public void onAccessibilityEvent(AccessibilityEvent event) {
  int eventType = event.getEventType();
  switch (eventType) {
   //当通知栏发生改变时
   case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED:
    List<CharSequence> texts = event.getText();
    if (!texts.isEmpty()) {
     for (CharSequence text : texts) {
      String content = text.toString();
      if (content.contains("[微信红包]")) {
       //模拟打开通知栏消息，即打开微信
       if (event.getParcelableData() != null &&
         event.getParcelableData() instanceof Notification) {
        Notification notification = (Notification) event.getParcelableData();
        PendingIntent pendingIntent = notification.contentIntent;
        try {
         pendingIntent.send();
         Log.e("demo","进入微信");
        } catch (Exception e) {
         e.printStackTrace();
        }
       }
      }
     }
    }
    break;
   //当窗口的状态发生改变时
   case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:
    String className = event.getClassName().toString();
    if (className.equals("com.tencent.mm.ui.LauncherUI")) {
     //点击最后一个红包
     Log.e("demo","点击红包");
     getLastPacket();
    } else if (className.equals("com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyReceiveUI")) {
     //开红包
     Log.e("demo","开红包");
     inputClick("com.tencent.mm:id/bg7");
    } else if (className.equals("com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyDetailUI")) {
     //退出红包
     Log.e("demo","退出红包");
     inputClick("com.tencent.mm:id/gd");
    }
    break;
  }
 }

 /**
  * 通过ID获取控件，并进行模拟点击
  * @param clickId
  */
 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
 private void inputClick(String clickId) {
  AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();
  if (nodeInfo != null) {
   List<AccessibilityNodeInfo> list = nodeInfo.findAccessibilityNodeInfosByViewId(clickId);
   for (AccessibilityNodeInfo item : list) {
    item.performAction(AccessibilityNodeInfo.ACTION_CLICK);
   }
  }
 }

 /**
  * 获取List中最后一个红包，并进行模拟点击
  */
 private void getLastPacket() {
  AccessibilityNodeInfo rootNode = getRootInActiveWindow();
  recycle(rootNode);
  if(parents.size()>0){
   parents.get(parents.size() - 1).performAction(AccessibilityNodeInfo.ACTION_CLICK);
  }
 }

 /**
  * 回归函数遍历每一个节点，并将含有"领取红包"存进List中
  *
  * @param info
  */
 public void recycle(AccessibilityNodeInfo info) {
  if (info.getChildCount() == 0) {
   if (info.getText() != null) {
    if ("领取红包".equals(info.getText().toString())) {
     if (info.isClickable()) {
      info.performAction(AccessibilityNodeInfo.ACTION_CLICK);
     }
     AccessibilityNodeInfo parent = info.getParent();
     while (parent != null) {
      if (parent.isClickable()) {
       parents.add(parent);
       break;
      }
      parent = parent.getParent();
     }
    }
   }
  } else {
   for (int i = 0; i < info.getChildCount(); i++) {
    if (info.getChild(i) != null) {
     recycle(info.getChild(i));
    }
   }
  }
 }

 /**
  * 中断服务的回调
  */
 @Override
 public void onInterrupt() {

 }
}