Android中的易访问性服务一直处于禁用状态

Question

我开发了一个基于可访问性服务的Android应用程序。但是我有个问题，我在网上找不到任何帮助。当我在任何设备上安装应用程序时，很明显，它直到：

1. 我去无障碍设置
2. 查找其无障碍服务
3. 进入并按下开关打开服务

问题有点复杂：启用辅助功能服务后，我可以在辅助功能设置屏幕中看到服务显示“已启用”。事实上，应用程序正在运行。但是如果我进入服务，在顶部和右侧有一个开关显示为OFF。为什么？它没有感觉到服务已启用且正在工作，开关显示为OFF。

我尝试了另一种内置对讲服务。当我打开开关时，返回辅助功能设置屏幕，然后再次进入对讲服务，开关保持打开。为什么我的服务不能正常工作？

我再次解释，虽然激活开关对我的服务不能正常工作，但我的应用程序确实可以工作，唯一的问题是那个开关，当我的服务已经打开时，它会混淆用户显示OFF。

发生这种情况有什么原因吗？也许我错过了一些事情，比如告诉系统服务何时启用或者类似的事情？

我的服务代码没有什么不寻常的，类似于任何其他可访问性服务，除了事件发生时的自定义操作。

下面是应用程序的清单XML文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="bembibre.attractive"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="21" />

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.BIND_ACCESSIBILITY_SERVICE" />
    <uses-permission android:name="android.permission.READ_CALENDAR" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.READ_CALL_LOG" />
    <uses-permission android:name="android.permission.RECEIVE_SMS"/>
    <uses-permission android:name="android.permission.READ_SMS" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="bembibre.attractive.activities.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>
        <activity android:name="bembibre.attractive.activities.HelpActivity" >
        </activity>
        <activity android:name="bembibre.attractive.activities.NotesActivity" >
        </activity>

        <!-- BroadCastReceiver's -->
        <receiver
            android:name=".NotificationsWidget"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>

            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/widget_provider" />
        </receiver>
        <receiver
            android:name="bembibre.attractive.events.receivers.DateChangedReceiver"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.TIMEZONE_CHANGED" />
                <action android:name="android.intent.action.TIME_SET" />
            </intent-filter>
        </receiver>
        <receiver android:name="bembibre.attractive.events.scheduling.OnAlarmReceiver" />
        <receiver android:name="bembibre.attractive.events.receivers.CalendarChangedReceiver" >
            <intent-filter>
                <action android:name="android.intent.action.PROVIDER_CHANGED" />

                <data android:scheme="content" />
                <data android:host="com.android.calendar" />
            </intent-filter>
        </receiver>
        <receiver
            android:name="bembibre.attractive.events.receivers.MissedCallsChangedReceiver"
            android:enabled="true" >
            <intent-filter>
                <action android:name="android.intent.action.PHONE_STATE" />
            </intent-filter>
        </receiver>
        <receiver android:name="bembibre.attractive.events.receivers.SmsReceiver" >
            <intent-filter android:priority="500" >
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
            </intent-filter>
        </receiver>

        <!-- Servicios -->
        <service android:name="bembibre.attractive.ui.WidgetPaintingService" />
        <service android:name="bembibre.attractive.events.wakelocks.DateChangedCpuLockTask" />
        <service android:name="bembibre.attractive.events.wakelocks.UpdateWhatsAppDataCpuLockTask" />
        <service android:name="bembibre.attractive.events.wakelocks.CalendarChangedCpuLockTask" />
        <service android:name="bembibre.attractive.events.wakelocks.MissedCallsChangedCpuLockTask" />
        <service android:name="bembibre.attractive.events.wakelocks.SmsChangedCpuLockTask" />
        <service android:name="bembibre.attractive.events.wakelocks.UpdateAllDataCpuLockTask" />
        <service
            android:name="bembibre.attractive.events.EventsAccessibilityService"
            android:label="@string/accessibility_service_label"
            android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE" >
            <meta-data
                android:name="android.accessibilityservice"
                android:resource="@xml/accessibility_service_config" />

            <intent-filter>
                <action android:name="android.accessibilityservice.AccessibilityService" />
            </intent-filter>
        </service>
    </application>
</manifest>

清单声明可访问性服务，并引用以下配置文件：

<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:description="@string/accessibility_service_description"
/>

以下是实现可访问性服务的Java类的代码：

package bembibre.attractive.events;

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

import android.accessibilityservice.AccessibilityService;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.annotation.SuppressLint;
import android.app.Notification;
import android.os.Build;
import android.view.accessibility.AccessibilityEvent;
import android.widget.RemoteViews;
import bembibre.attractive.events.wakelocks.CpuLockTask;
import bembibre.attractive.events.wakelocks.DeleteAllWhatsAppDataCpuLockTask;
import bembibre.attractive.events.wakelocks.MissedCallsChangedCpuLockTask;
import bembibre.attractive.events.wakelocks.SmsChangedCpuLockTask;
import bembibre.attractive.events.wakelocks.UpdateWhatsAppDataCpuLockTask;
import bembibre.attractive.logging.Logger;
import bembibre.attractive.logic.ApplicationPackages;
import bembibre.attractive.logic.whatsapp.WhatsAppNotificationContent;
import bembibre.attractive.logic.whatsapp.WhatsAppNotificationExtractionStrategy;
import bembibre.attractive.utils.AppUtils;
import bembibre.attractive.utils.ArrayUtils;

/**
 * Clase que representa un servicio que debe estar activo todo el tiempo para que el widget de notificaciones funcione
 * correctamente. Este servicio se encarga de capturar distintos eventos que hacen que aparezcan datos en el widget.
 * 
 * @author misines
 * 
 */
public class EventsAccessibilityService extends AccessibilityService {

    private static final List<Integer> OPEN_WINDOW_EVENTS = new ArrayList<Integer>();

    private static final List<WhatsAppNotificationExtractionStrategy> STRATEGIES = new ArrayList<WhatsAppNotificationExtractionStrategy>();
    static {
        /*
         * Añadimos las estrategias para la extracción de contenido de notificaciones de WhatsApp.
         */
        // Aún no dispongo de las estrategias necesarias...
    }

    @SuppressLint("InlinedApi")
    @Override
    public void onServiceConnected() {
        AccessibilityServiceInfo info = new AccessibilityServiceInfo();

        OPEN_WINDOW_EVENTS.add(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
        OPEN_WINDOW_EVENTS.add(AccessibilityEvent.TYPE_VIEW_FOCUSED);
        // if (Build.VERSION.SDK_INT >= 14) {
        // OPEN_WINDOW_EVENTS.add(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
        // OPEN_WINDOW_EVENTS.add(AccessibilityEvent.TYPE_VIEW_SCROLLED);
        // }
        // else {
        // OPEN_WINDOW_EVENTS.add(2048);
        // OPEN_WINDOW_EVENTS.add(4096);
        // }

        // Set the type of events that this service wants to listen to. Others
        // won't be passed to this service.
        int eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
        for (Integer openWindowEvent : OPEN_WINDOW_EVENTS) {
            eventTypes = eventTypes | openWindowEvent;
        }
        info.eventTypes = eventTypes;

        // If you only want this service to work with specific applications, set their
        // package names here. Otherwise, when the service is activated, it will listen
        // to events from all applications.
        info.packageNames = ApplicationPackages.getMergedPackages(ApplicationPackages.PKG_WHATSAPP,
                ApplicationPackages.PKG_CALLS, ApplicationPackages.PKG_SMS);

        // Set the type of feedback your service will provide.
        info.feedbackType = AccessibilityServiceInfo.FEEDBACK_VISUAL;

        // Default services are invoked only if no package-specific ones are present
        // for the type of AccessibilityEvent generated. This service *is*
        // application-specific, so the flag isn't necessary. If this was a
        // general-purpose service, it would be worth considering setting the
        // DEFAULT flag.

        // info.flags = AccessibilityServiceInfo.DEFAULT;

        info.notificationTimeout = 100;

        this.setServiceInfo(info);

    }

    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        int eventType = event.getEventType();
        String packageName = event.getPackageName().toString();
        Logger.log("Evento de accesibilidad detectado de tipo: " + Integer.valueOf(eventType).toString()
                + ", aplicación: " + packageName);
        if (isOpenWindowEvent(eventType)) {
            if (ArrayUtils.containsIgnoreCase(ApplicationPackages.PKG_WHATSAPP, packageName)) {
                Logger.log("Se ha abierto la aplicación WhatsApp");
                CpuLockTask.execute(this, DeleteAllWhatsAppDataCpuLockTask.class);
            }

            /*
             * En llamadas y mensajes tenemos que introducir un retardo porque sino suele pasar que la recolección de
             * datos se produce antes de que el sistema haya marcado las llamadas y mensajes como leídos.
             */
            if (ArrayUtils.containsIgnoreCase(ApplicationPackages.PKG_CALLS, packageName)) {
                Logger.log("Se ha abierto la aplicación de las llamadas.");
                CpuLockTask.execute(this, MissedCallsChangedCpuLockTask.class, AppUtils.SLEEP_BEFORE_RECOLLECTION);
            }
            if (ArrayUtils.containsIgnoreCase(ApplicationPackages.PKG_SMS, packageName)) {
                Logger.log("Se ha abierto la aplicación de los SMSs.");
                CpuLockTask.execute(this, SmsChangedCpuLockTask.class, AppUtils.SLEEP_BEFORE_RECOLLECTION);
            }
        }
        if (((ArrayUtils.containsIgnoreCase(ApplicationPackages.PKG_WHATSAPP, packageName)) && (eventType == AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED))) {
            this.processWhatsAppNotificacion(event);
        }
    }

    @Override
    public void onInterrupt() {

    }

    private boolean isOpenWindowEvent(int event) {
        boolean result;
        if (OPEN_WINDOW_EVENTS.contains(event)) {
            result = true;
        } else {
            result = false;
        }
        return result;
    }

    @SuppressLint("NewApi")
    private void processWhatsAppNotificacion(AccessibilityEvent event) {
        Notification notification;
        try {
            notification = ((Notification) event.getParcelableData());
        } catch (ClassCastException e) {
            notification = null;
        }
        if (notification == null) {
            Logger.log("Se ha recibido una notificación de WhatsApp pero no es de clase \"Notification\" o está vacía.");
        } else {
            WhatsAppNotificationContent content = null;
            int index = 1;
            for (WhatsAppNotificationExtractionStrategy strategy : STRATEGIES) {
                content = strategy.extract(notification);
                if (content != null) {
                    Logger.log("Éxito en estrategia de extracción " + index + ".");
                    break;
                }
                index++;
            }
            if (content == null) {
                Logger.log("Se ha recibido una notificación de WhatsApp pero la vista está vacía o ninguna de las estrategias de extracción han funcionado.");
            } else {
                Logger.log("Se ha recibido una notificación de WhatsApp analizable.");
                CpuLockTask.execute(this, UpdateWhatsAppDataCpuLockTask.class, 0, content);
            }
        }
    }
}

很抱歉，代码的注释是西班牙语的。那是因为它是我的母语。

Answer 1

就我而言，oppo f1，我找到了一个解决方案：

>

首先，您的设备应该是根设备，最好的方法是将固件重置为出厂状态或更新为较新的oppo系统映像，然后安装自定义恢复BIOS或其名称，然后使用Magisc在恢复模式下根设备。所有这些都在一些xda开发者论坛主题中进行了描述。但这不是我们现在的问题。

为了防止从我们的服务或应用程序中撤销可访问性权限，我们必须通过浏览设置转到开发人员选项

现在，当我们永远成为一名开发人员时，我们回到过去，然后导航到设置

打开Running Services部分，浏览名为Security Center的应用程序，在其中我们可以看到4个正在运行的服务，然后停止名为CONTROL\u VERIFY\u service的服务（当然风险由您自己承担）。

就是这样，现在只需进入设置

Answer 2

这发生在我身上，小米红米纸条3（Marshmallow）上的Greenify，

我做到了：

设置

，并允许绿色化。这对我有用。