Accessibility : TextView & ImageView

TextView :

<Element Text> <Element Action(if added)>

• Minimum text size must be 14sp

• 48 dp is the recommended touch target size for elements according to Google (height and width, with an 8 dp margin around the element).

 This is not mandatory to set contentDescription here , if some thing is required to announce , which is different from the mentioned in text string , so in that case contentDescription should be added , take a look :

Case -I

  <TextView
        android:text="Hello World!"
        android:contentDescription="This is Accessibility demo!"
       />

In this case , it will only announce : "This is Accessibility demo!"
If contentDescription is not mentioned : "Hello World!"


Case -II

<TextView
        android:text="This is demo!"
        android:clickable="true"
        />

In this case , it will only announce : "This is demo! , double tap to activate"

Here , double tap to activate , will also announced because clickable="true" has been added.




In case of ImageView :

It is mandatory to mention the content description , for imageview ,  it should be the well-descriptive  and convey the correct information of that image.

If in any imageview , content description is not added , it will show the fail result , in accessibility scanner /axe tool .

So if in any imageview , it is not required to announce anything , so in that content description can set it to "@null"

Here is an example :

 <ImageView
        android:id="@+id/imageView3"
        android:contentDescription="@null"
        app:srcCompat="@mipmap/ic_launcher" />

    <ImageView
        android:id="@+id/imageView2"
        android:contentDescription="my profile"
        app:srcCompat="@mipmap/ic_launcher" />

Here we can see that , in imageView2 ,  the my profile description has been added , but in imageView3 , it will not announce anything as contentDescription is set to @null .