What is the difference between Android focusable and importantForAccessibility when using TalkBack? -


i have noticed in many situations android:importantforaccessibility="yes" can replaced android:focusable="true" , work same talkback. when should android:importantforaccessibility="yes" used instead of using focusable?

android defines android:importantforaccessibility as:

describes whether or not view important accessibility. if important, view fires accessibility events , reported accessibility services query screen. note: while not recommended, accessibility service may decide ignore attribute , operate on views in view tree. https://developer.android.com/reference/android/view/view.html#attr_android:importantforaccessibility

and android:focusable="true" as:

controls whether view can take focus. default, "auto" lets framework determine whether user can move focus view. setting attribute true view allowed take focus. setting "false" view not take focus. value not impact behavior of directly calling requestfocus(), request focus regardless of view. impacts focus navigation try move focus. https://developer.android.com/reference/android/view/view.html#attr_android:focusable

focusable refers "input focus" , "keyboard focus". focusable control 1 can receive input focus (the cursor), or keyboard focus... means user can use trackball/keyboard navigation highlight , interact such controls "select" action... example: hitting enter on keyboard.

isimportantforaccessibility refers accessibility focus. highly linked input focus, different. example, input focusing "informative" text content non sensical. however, allowing paragraph receive accessibility focus important. allows users using talkback focus , hear spoken feedback such informative controls.

if user using keyboard navigation, input focus , accessibility focus same, if user using talkback swipe navigation, input focus , accessibility focus can different.

for example:

the cursor in edittext box, while accessibility focus on paragraph below explaining user through voicefeedback control for.


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