If we wish to display another image on the ImageButton after it has been clicked then we use selectors.
Selector is an xml file which is created in the drawable folder , helps us set a default image and a image that is set on of the following events:-
1. android:state_focused
2. android:state_enabled
3. android:state_checkable
4. android:state_selected
5. android:state_pressed
6. android:state_active
7. android:state_single
8. android:state_accelerated
9. android:state_hovered
10. android:state_drawable
11. android:state_first
12. android:state_last
13. android:state_middle
When the image button is used in layout ,then instead of selecting a image ,select the selector xml file in the following way:
STEPS:
1. Create a xml file for selector in the drawable folder.
Syntax:
<selector xmlns:android=”http://schemas.android.com/apk/res/android” >
<item android:drawable=”@drawable/camera_pressed”
android:state_pressed=”true” />
<item android:drawable=”@drawable/camera_normal” android: />
</selector>
2. Set android:background attribute in the following way
android:background=”@drawable/review_selector”
Example:
<ImageButton
android:id=”@+id/reviewBtn_id”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:layout_alignTop=”@+id/playBtn_id”
android:layout_marginTop=”63dp”
android:layout_toRightOf=”@+id/playBtn_id”
android:background=”@drawable/review_selector” />
By Rachita Nanda
