android_mt6572_jiabo/packages/experimental/TestBack/res/xml/accessibilityservice.xml

<accessibility-service  xmlns:android="http://schemas.android.com/apk/res/android"
     android:accessibilityFeedbackType="feedbackHaptic"
     android:accessibilityEventTypes="typeAllMask"
     android:canRetrieveWindowContent="true"
     android:canRequestTouchExplorationMode="true"
/>