Tab Not Taking Full Width on Tablet Device [Using Android.Support.Design.Widget.Tablayout]

Tab not taking full width on Tablet device [Using android.support.design.widget.TabLayout]

A "simpler" answer borrowed from Kaizie would just be adding app:tabMaxWidth="0dp" in your TabLayout xml:

<android.support.design.widget.TabLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabMaxWidth="0dp"
            app:tabGravity="fill"
            app:tabMode="fixed" />

How to make TabLayout take up full width of the screen?

Try below snippet

<android.support.design.widget.TabLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabMaxWidth="0dp"
            app:tabGravity="fill"
            app:tabMode="fixed" />

tab icons not filling full width

Usefixed tabMode instead of scrollable

app:tabMode="fixed"

Android one tab TabLayout with full width not working at first

I faced exactly the same issue and managed to solve it by setting the tabMaxWidth attribute to a high value rather (e.g. 500dp) than to 0dp as suggested in some answers.

<android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabMaxWidth="500dp" />

Tabs in TabLayout not filling up entire ActionBar

You can refer to the TabLayout.

GRAVITY_CENTER Gravity used to lay out the tabs in the center of the TabLayout.

GRAVITY_FILL Gravity used to fill the TabLayout as much as possible.

MODE_FIXED Fixed tabs display all tabs concurrently and are best used with content that benefits from quick pivots between tabs.

MODE_SCROLLABLE Scrollable tabs display a subset of tabs at any given moment, and can contain longer tab labels and a larger number of tabs.

Set this in your code or your layout xml.

app:tabGravity="center"
app:tabMode="fixed"

or

tabLayout.setTabGravity(TabLayout.GRAVITY_CENTER);
tabLayout.setTabMode(TabLayout.MODE_FIXED);    

Generally, using the code like blow can work without setting tabGravity and tabMode.

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
        app:layout_scrollFlags="scroll|enterAlways" />

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

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

TabLayout not filling width when tabMode set to 'scrollable'

I guess this is the simpliest way to achieve what you want.

public class CustomTabLayout extends TabLayout {
    public CustomTabLayout(Context context) {
        super(context);
    }

    public CustomTabLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomTabLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        try {
            if (getTabCount() == 0)
                return;
            Field field = TabLayout.class.getDeclaredField("mTabMinWidth");
            field.setAccessible(true);
            field.set(this, (int) (getMeasuredWidth() / (float) getTabCount()));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Tablayout height not working in tablet

The problem was with the parent of the tablayout. The tablayout was ok. Here is the code for parent item.

    <RelativeLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/default_app_white"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        >
        <android.support.design.widget.TabLayout
            android:id="@+id/tablayout_add"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabMaxWidth="0dp"
            android:minHeight="0dp"
            android:layout_gravity="bottom"
            android:layout_below="@+id/relativeLayout"
            app:tabGravity="fill"
            app:tabBackground="@drawable/tab_color_selector"
            app:tabIndicatorColor="@color/sea_green"
            app:tabIndicatorHeight="2dp"
            app:tabMode="fixed"
            android:clickable="false"/>
</RelativeLayout> 

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