单击时如何更改选项卡的背景色

Question

I have a TabLayout and it displays about 4 tabs. When I click on one tab, the background color is a disgusting yellowish highlight (and then goes back to normal when I release). How would I change it so that it is white during the transition to the desired fragment.

Here is my app theme

app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"

and here is the Tablayout and ViewPager

<android.support.design.widget.TabLayout
    android:id="@+id/sliding_tabs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/headBlue"
    app:tabMaxWidth="0dp"
    app:tabGravity="fill"
    app:tabIndicatorColor="@android:color/white"
    app:tabMode="fixed" />

<android.support.v4.view.ViewPager
    android:id="@+id/viewpager"
    android:layout_width="match_parent"
    android:layout_height="0px"
    android:layout_weight="1" />

and here are the dependencies

compile 'com.android.support:appcompat-v7:23.2.0'
compile 'com.android.support:design:23.2.0'

Answer 1

Step 1

Create drawable file for selector named tab_selector.xml in your drawable directory.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/tab_background_selected" android:state_selected="true" />
    <item android:drawable="@drawable/tab_background_unselected" android:state_selected="false" android:state_focused="false" android:state_pressed="false" />
</selector>

Step 2

Create tab_background_selected.xml file in drawable directory.

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
    <solid android:color="#FF0000" />
</shape>

Step 3

Create tab_background_unselected.xml file in drawable directory.

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
    <solid android:color="#00FF00" />
</shape>

Step 4

Finally, apply this to your style.

<style name="Base.Widget.Design.TabLayout" parent="android:Widget">
    <item name="tabBackground">@drawable/tab_selector</item>
</style>