Android Accessibility

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1<!-- for example -->
2<ImageView
3    android:id="@+id/userPhotoImageView"
4    android:layout_width="match_parent"
5    android:layout_height="match_parent"
6    android:contentDescription="@string/cd_profile_image_change"
7    android:src="@drawable/bg_user_thumbnail_pressed_selector" />

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1fun setAccessibilityClickActionHintScript(
2    view: View, 
3    hintScript: String?
4) {
5    if (isTalkbackOn) {
6        view.setAccessibilityDelegate(object : View.AccessibilityDelegate() {
7            override fun onInitializeAccessibilityNodeInfo(
8                host: View, 
9                info: AccessibilityNodeInfo
10            ) {
11                super.onInitializeAccessibilityNodeInfo(host, info)
12                val infoCompat = AccessibilityNodeInfoCompat.wrap(info)
13                val clickAction = AccessibilityActionCompat(
14                    AccessibilityNodeInfoCompat.ACTION_CLICK, 
15                    hintScript
16                )
17                infoCompat.addAction(clickAction)
18            }
19        })
20    }
21}

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1fun sendAccessibilityEvent(text: String?) {
2    if (isTalkbackOn) {
3        val e = AccessibilityEvent.obtain()
4        e.eventType = AccessibilityEvent.TYPE_ANNOUNCEMENT
5        e.className = context.javaClass.getName()
6        e.packageName = context.packageName
7        e.text.add(text)
8        manager.sendAccessibilityEvent(e)
9    }
10}