1
我已經開發了一種基於無障礙服務的Android應用程序。但是我有一個問題，我在互聯網上找不到任何幫助。當我安裝任何設備上的應用，顯然它不會開始工作，直到：輔助服務不斷得到禁用
- 我去輔助功能設置
- 找到它的輔助服務
- 進入並推開關打開服務
問題有點複雜： 啓用無障礙服務後，我可以在輔助功能設置屏幕中看到該服務顯示「已啓用」。實際上應用程序正在工作。但是如果我進入服務，頂部和右側有一個開關，顯示爲OFF。爲什麼？沒有任何意義，該服務已啓用並正常工作，並且該開關顯示爲OFF。
我曾嘗試與另一服務對講自帶內置。當我打開開關，返回到輔助功能設置屏幕，然後再次進入對講服務，開關保持ON狀態。爲什麼它不適合我的服務？
我再次解釋說，雖然激活開關不爲我服務的正常工作，我的應用程序確實工作，唯一的問題是，交換機，它混淆了炫耀的用戶時，我的服務已經打開。
有什麼緣由，這可能發生？也許我錯過了什麼時候告訴系統何時啓用服務或類似的東西？
我服務的代碼有什麼不尋常的，類似於除了我的自定義操作的任何其他輔助服務時，事件出現。
這裏是應用程序的清單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>
的清單聲明可訪問服務，它指的是下面的配置文件：
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:description="@string/accessibility_service_description"
/>
這裏是Java類的代碼實現了無障礙服務：
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);
}
}
}
}
我很抱歉代碼的評論是用西班牙文寫的。那是因爲它是我的母語。
請張貼您的代碼。 – Lampard
我已經發布了我的代碼。你認爲它錯過了什麼？我通過Android Developers網站上的示例構建了它。 – user3289695