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android – How do I change a tab background color when using TabLayout?

Posted by: admin March 11, 2020 Leave a comment

Questions:

This is my code in the main activity

public class FilterActivity extends AppCompatActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_filter);

    // Get the ViewPager and set it's PagerAdapter so that it can display items
    ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
    PageAdapter pageAdapter = new PageAdapter(getSupportFragmentManager(), FilterActivity.this);
    viewPager.setAdapter(pageAdapter);

    // Give the TabLayout the ViewPager
    final TabLayout tabLayout = (TabLayout) findViewById(R.id.sliding_tabs);
    tabLayout.setupWithViewPager(viewPager);



  }
}

And this is my code in the XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <include
        android:id="@+id/app_bar"
        layout="@layout/app_bar">
    </include>

    <android.support.design.widget.TabLayout
        android:id="@+id/sliding_tabs"
        android:layout_width="fill_parent"
        style="@style/MyCustomTabLayout"
        android:layout_height="48dp"/>

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

</LinearLayout>

I want to change the background color of one tab when it’s selected

How to&Answers:

What finally worked for me is similar to what @如果我是DJ suggested, but the tabBackground should be in the layout file and not inside the style, so it looks like:

res/layout/somefile.xml:

<android.support.design.widget.TabLayout
    ....
    app:tabBackground="@drawable/tab_color_selector"
    ...
    />

and the selector
res/drawable/tab_color_selector.xml:

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

Answer:

You can try this:

<style name="MyCustomTabLayout" parent="Widget.Design.TabLayout">
    <item name="tabBackground">@drawable/background</item>
</style>

In your background xml file:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" android:drawable="@color/white" />
    <item android:drawable="@color/black" />
</selector>

Answer:

Add atribute in xml:

<android.support.design.widget.TabLayout
    ....
    app:tabBackground="@drawable/tab_color_selector"
    ...
    />

And create in drawable folder, tab_color_selector.xml

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

Answer:

Have you tried checking the API?

You will need to create a listener for the OnTabSelectedListener event, then when a user selects any tab you should check if it is the correct one, then change the background color using tabLayout.setBackgroundColor(int color), or if it is not the correct tab make sure you change back to the normal color again with the same method.

Answer:

You can have it in the xml.

<android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        app:tabTextColor="@color/colorGray"
        app:tabSelectedTextColor="@color/colorWhite"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

Answer:

As I found best and suitable option for me and it will work with animation too.

You can use indicator it self as a background.

You can set app:tabIndicatorGravity="stretch" attribute to use as background.

Example:

   <android.support.design.widget.TabLayout
        android:id="@+id/tab_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabIndicatorGravity="stretch"
        app:tabSelectedTextColor="@color/white"
        app:tabTextColor="@color/colorAccent">

        <android.support.design.widget.TabItem
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Chef" />


        <android.support.design.widget.TabItem
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="User" />

    </android.support.design.widget.TabLayout>

Hope it will helps you.

Answer:

You can change the background or ripple color of each Tab like this:

    //set ripple color for each tab
    for(int n = 0; n < mTabLayout.getTabCount(); n++){

        View tab = ((ViewGroup)mTabLayout.getChildAt(0)).getChildAt(n);

        if(tab != null && tab.getBackground() instanceof RippleDrawable){
            RippleDrawable rippleDrawable = (RippleDrawable)tab.getBackground();
            if (rippleDrawable != null) {
                rippleDrawable.setColor(ColorStateList.valueOf(rippleColor));
            }
        }
    }

Answer:

You can change the background color of the tab by this attribute

<android.support.design.widget.TabLayout
android:id="@+id/tabs"
style="@style/CategoryTab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
'android:background="@color/primary_color"/>'

Answer:

After some messing around this is how I got the desired look (at least in the emulator) and it keeps the ripple effect.

tab layout with tab selector with color argument

<com.google.android.material.tabs.TabLayout
    android:id="@+id/tabs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:tabBackground="@drawable/tab_selector"
    app:tabIconTint="@drawable/tab_selector"
    app:tabIconTintMode="src_atop"
    app:tabTextColor="@drawable/tab_selector" />

And the @drawable/tab_selector:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/colorPrimary" android:drawable="@color/colorPrimaryDark" android:state_selected="true" />
    <item android:color="@color/colorPrimaryDark" android:drawable="@color/colorPrimary" />
</selector>

FYI: This is what the emulator showed before I added the color argument to @drawable/tab_selector:

tab layout with tab selector without color argument

Answer:

One of simplest solution is to change colorPrimary from colors.xml file.