Android辅助服务 [英] Android accessibility service

问题描述

我试图写一个非常基本的Andr​​oid辅助服务，显示消息和振动时的任何通知提出。我试着用我的手机上发送电子邮件，我自己测试它（我想这将表现出一定的通知）。但是，我还没有看到任何通知。

I'm trying to write a very basic android accessibility service that shows a message and vibrates when any notification is raised. I've tried testing it by sending an email myself on my phone (I figured that would show some notification). But I have not seen any notifications.

我的服务code看起来像

My service code looks like

public class NotifierService extends AccessibilityService {

  @Override
  public void onAccessibilityEvent(AccessibilityEvent evt) {
    Toast.makeText(this, "Got event from " + evt.getPackageName(), Toast.LENGTH_SHORT)
            .show();
    Vibrator v = (Vibrator) getSystemService(VIBRATOR_SERVICE);
    v.vibrate(new long[] { 0, 250, 250, 250, 250, 250, 250, 250, 250 }, -1);
  }

  @Override
  public void onInterrupt() { }
}

我已经验证该服务正在运行，并且我已经启用了它在手机的辅助功能菜单。而清单如下（部分被去掉不相关）：

I have verified that the service is running and I have enabled it in the accessibility menu of the phone. And the manifest looks like this (some parts are removed that are not relevant):

<uses-permission android:name="android.permission.VIBRATE" />
<application>
    <activity
        android:name=".MyActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

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

MyActivity 只是与启动/停止该服务的一个按钮的活动。

MyActivity is just an activity with a button for starting/stopping the service.

推荐答案

我添加了服务标签内的元数据元素

I added a meta data element inside the service tag

<meta-data android:name="android.accessibilityservice" android:resource="@xml/accessibilityservice" />

和在XML资源文件，我有

And in the xml resources file I have

<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
                       android:accessibilityEventTypes="typeNotificationStateChanged"
                       android:accessibilityFeedbackType="feedbackAllMask"
                       android:notificationTimeout="100" />

这篇关于Android辅助服务的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！