Android spinner dropdown item ripple background goes outside the round corners-CodePudding

I have an AppCompatSpinner with a dropdown menu custom background with rounded corners. When I tap an option in the AppCompatSpinner, it shows the ripple background however the ripple goes outside the round corners and forms a normal rectangle. How can i make it so that the ripple fit in the background of popup?

This is how it looks now, ripple effect goes out of rounded background:

Im using popupBackground property to set rounded corners background.

MyActivity:

<androidx.appcompat.widget.AppCompatSpinner
    popupBackground="@drawable/background_white_corners"
    android:spinnerMode="dropdown"
    android:dropDownVerticalOffset="50dp"
 ...
/>

background_white_corners.xml

<?xml version="1.0" encoding="utf-8">
<shape ... android:shape="rectangle">
  <solid android:color="@android:color/white"/>
  <corners android:radius ="30dp"/>
</shape>

My item spinner is just a TextView, without any layout.

<?xml version="1.0" encoding="utf-8">
<androidx.appcompat.widget.AppCompatCheckedTextView ...
      android:id="@ id/textview_spinner_item"
/>

CodePudding user response：

Try to use the setClipToOutline(true) on the AppCompatSpinner.

You could also do it in the XML with android:clipToOutline but it's available in API 31 only

CodePudding user response：

You should use ripple tag inside background drawable for ripple effect in this way:


<?xml version="1.0" encoding="utf-8">
<ripple ....>
  <shape android:shape="rectangle">
  <solid android:color="@android:color/white"/>
  <corners android:radius ="30dp"/>
  </shape>
</ripple>