分享一个Android实现微信自动抢红包的代码实例

简单实现了微信自动抢红包的服务，原理就是根据关键字找到相应的View, 然后自动点击。主要是用到AccessibilityService这个辅助服务，基本可以满足自动抢红包的功能，但是有些逻辑需要优化，比如，拆完一个红包后，必须手动点击返回键，才能进行下一次自动抢红包。

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="打开辅助服务"/>
 
</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 { 
                    //打开系统设置中辅助功能 
                    Intent intent = new Intent(android.provider.Settings.ACTION_ACCESSIBILITY_SETTINGS); 
                    startActivity(intent); 
                    Toast.makeText(MainActivity.this, "找到抢红包，然后开启服务即可", 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/>
 * 抢红包外挂服务
 */
public class EnvelopeService extends AccessibilityService {
 
    static final String TAG = "Jackie";
 
    /**
     * 微信的包名
     */
    static final String WECHAT_PACKAGENAME = "com.tencent.mm";
    /**
     * 红包消息的关键字
     */
    static final String ENVELOPE_TEXT_KEY = "[微信红包]";
 
    Handler handler = new Handler();
 
    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        final int eventType = event.getEventType();
 
        Log.d(TAG, "事件---->" + event);
 
        //通知栏事件
        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, "中断抢红包服务", Toast.LENGTH_SHORT).show();
    }
 
    @Override
    protected void onServiceConnected() {
        super.onServiceConnected();
        Toast.makeText(this, "连接抢红包服务", Toast.LENGTH_SHORT).show();
    }
 
    private void sendNotificatio