Android accessibility service

Question

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

Answer 1

Accessibility Service is overkill for your purposes, you should use NotificationListenerService. The NotificationListenerService is much easier to implement and safer for users (privacy reasons).

Answer 2

One other way to configure the accessibility service is to Override the OnServiceConnected() method of your AccessibilityService from java code.

@Override
  protected void onServiceConnected() {
    AccessibilityServiceInfo info = getServiceInfo();
    info.packageNames = new String[]
        {
            "com.packagename1","com.packagename2"
        };
    info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;

    this.setServiceInfo(info);
  }

Reference

• https://developer.android.com/training/accessibility/service.html

Answer 3

I added a meta data element inside the service tag

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

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" />