簡單實現(xiàn)了微信自動搶紅包的服務(wù)，原理就是根據(jù)關(guān)鍵字找到相應(yīng)的View, 然后自動點擊。主要是用到AccessibilityService這個輔助服務(wù)，基本可以滿足自動搶紅包的功能，但是有些邏輯需要優(yōu)化，比如，拆完一個紅包后，必須手動點擊返回鍵，才能進行下一次自動搶紅包。

AndroidManifest.xml
   
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.jackie.webchatenvelope" >
 
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
 
        <service
            android:enabled="true"
            android:exported="true"
            android:label="@string/app_name"
            android:name=".EnvelopeService"
            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/envelope_service_config"/>
        </service>
    </application>
 
</manifest>
   
envelope_service_config.xml
   
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeNotificationStateChanged|typeWindowStateChanged"
    android:accessibilityFeedbackType="feedbackGeneric"
    android:accessibilityFlags=""
    android:canRetrieveWindowContent="true"
    android:description="@string/accessibility_description"
    android:notificationTimeout="100"
    android:packageNames="com.tencent.mm" />
   
activity_main.xml
   
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">
 
    <Button
        android:id="@+id/start"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:layout_centerInParent="true"
        android:textSize="18sp"
        android:text="打開輔助服務(wù)"/>
 
</RelativeLayout>
   
MainActivity.java
   
package com.jackie.webchatenvelope; 
   
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.Button; 
import android.widget.Toast; 
   
public class MainActivity extends Activity { 
    private Button startBtn; 
   
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 
   
        startBtn = (Button) findViewById(R.id.start); 
        startBtn.setOnClickListener(new View.OnClickListener() { 
            @Override 
            public void onClick(View v) { 
                try { 
                    //打開系統(tǒng)設(shè)置中輔助功能 
                    Intent intent = new Intent(android.provider.Settings.ACTION_ACCESSIBILITY_SETTINGS); 
                    startActivity(intent); 
                    Toast.makeText(MainActivity.this, "找到搶紅包，然后開啟服務(wù)即可", Toast.LENGTH_LONG).show(); 
                } catch (Exception e) { 
                    e.printStackTrace(); 
                } 
            } 
        }); 
    } 
   
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
        // Inflate the menu; this adds items to the action bar if it is present. 
        getMenuInflater().inflate(R.menu.menu_main, menu); 
        return true; 
    } 
   
    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
        // Handle action bar item clicks here. The action bar will 
        // automatically handle clicks on the Home/Up button, so long 
        // as you specify a parent activity in AndroidManifest.xml. 
        int id = item.getItemId(); 
   
        //noinspection SimplifiableIfStatement 
        if (id == R.id.action_settings) { 
            return true; 
        } 
   
        return super.onOptionsItemSelected(item); 
    } 
}
   
EnvelopeService.java
   
package com.jackie.webchatenvelope;
 
import android.accessibilityservice.AccessibilityService;
import android.annotation.TargetApi;
import android.app.Notification;
import android.app.PendingIntent;
import android.os.Build;
import android.os.Handler;
import android.util.Log;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.Toast;
 
import java.util.List;
 
/**
 * <p>Created by Administrator</p>
 * <p/>
 * 搶紅包外掛服務(wù)
 */
public class EnvelopeService extends AccessibilityService {
 
    static final String TAG = "Jackie";
 
    /**
     * 微信的包名
     */
    static final String WECHAT_PACKAGENAME = "com.tencent.mm";
    /**
     * 紅包消息的關(guān)鍵字
     */
    static final String ENVELOPE_TEXT_KEY = "[微信紅包]";
 
    Handler handler = new Handler();
 
    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        final int eventType = event.getEventType();
 
        Log.d(TAG, "事件---->" + event);
 
        //通知欄事件
        if (eventType == AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED) {
            List<CharSequence> texts = event.getText();
            if (!texts.isEmpty()) {
                for (CharSequence t : texts) {
                    String text = String.valueOf(t);
                    if (text.contains(ENVELOPE_TEXT_KEY)) {
                        openNotification(event);
                        break;
                    }
                }
            }
        } else if (eventType == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
            openEnvelope(event);
        }
    }
 
    /*@Override
    protected boolean onKeyEvent(KeyEvent event) {
        //return super.onKeyEvent(event);
        return true;
    }*/
 
    @Override
    public void onInterrupt() {
        Toast.makeText(this, "中斷搶紅包服務(wù)", Toast.LENGTH_SHORT).show();
    }
 
    @Override
    protected void onServiceConnected() {
        super.onServiceConnected();
        Toast.makeText(this, "連接搶紅包服務(wù)", Toast.LENGTH_SHORT).show();
    }
 
    private void sendNotificationEvent() {
        AccessibilityManager manager = (AccessibilityManager) getSystemService(ACCESSIBILITY_SERVICE);
        if (!manager.isEnabled()) {
            return;
        }
        AccessibilityEvent event = AccessibilityEvent.obtain(AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
        event.setPackageName(WECHAT_PACKAGENAME);
        event.setClassName(Notification.class.getName());
        CharSequence tickerText = ENVELOPE_TEXT_KEY;
        event.getText().add(tickerText);
        manager.sendAccessibilityEvent(event);
    }
 
    /**
     * 打開通知欄消息
     */
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void openNotification(AccessibilityEvent event) {
        if (event.getParcelableData() == null || !(event.getParcelableData() instanceof Notification)) {
            return;
        }
        //以下是精華，將微信的通知欄消息打開
        Notification notification = (Notification) event.getParcelableData();
        PendingIntent pendingIntent = notification.contentIntent;
        try {
            pendingIntent.send();
        } catch (PendingIntent.CanceledException e) {
            e.printStackTrace();
        }
    }
 
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void openEnvelope(AccessibilityEvent event) {
        if ("com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyReceiveUI".equals(event.getClassName())) {
            //點中了紅包，下一步就是去拆紅包
            checkKey1();
        } else if ("com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyDetailUI".equals(event.getClassName())) {
            //拆完紅包后看詳細的紀錄界面
            //nonething
        } else if ("com.tencent.mm.ui.LauncherUI".equals(event.getClassName())) {
            //在聊天界面,去點中紅包
            checkKey2();
        }
    }
 
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void checkKey1() {
        AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();
        if (nodeInfo == null) {
            Log.w(TAG, "rootWindow為空");
            return;
        }
        List<AccessibilityNodeInfo> list = nodeInfo.findAccessibilityNodeInfosByText("拆紅包");
        for (AccessibilityNodeInfo n : list) {
            n.performAction(AccessibilityNodeInfo.ACTION_CLICK);
        }
    }
 
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    private void checkKey2() {
        AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();
        if (nodeInfo == null) {
            Log.w(TAG, "rootWindow為空");
            return;
        }
        List<AccessibilityNodeInfo> list = nodeInfo.findAccessibilityNodeInfosByText("領(lǐng)取紅包");
        if (list.isEmpty()) {
            list = nodeInfo.findAccessibilityNodeInfosByText(ENVELOPE_TEXT_KEY);
            for (AccessibilityNodeInfo n : list) {
                Log.i(TAG, "-->微信紅包:" + n);
                n.performAction(AccessibilityNodeInfo.ACTION_CLICK);
                break;
            }
        } else {
            //最新的紅包領(lǐng)起
            for (int i = list.size() - 1; i >= 0; i--) {
                AccessibilityNodeInfo parent = list.get(i).getParent();
                Log.i(TAG, "-->領(lǐng)取紅包:" + parent);
                if (parent != null) {
                    parent.performAction(AccessibilityNodeInfo.ACTION_CLICK);
                    break;
                }
            }
        }
    }
}

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