Cannot remove Padding from Tabs when using Custom views with Tab Layout

Question

I have added a Relative Layout in Custom View and have added this in Tab Layout. I am using a white background for tabs and have not applied any padding in tabs custom layou

Answer 1

I know this is an old question but this can help someone else. Padding start and padding end is not removing space between tabs. Solution is :

android:clipToPadding="true"

<android.support.design.widget.TabLayout
    android:id="@+id/tab_layout"
    android:layout_width="match_parent"
    android:layout_height="80dp"
    android:background="@color/colorGrayBackground"
    app:tabGravity="fill"
    app:tabPaddingStart="0dp"
    app:tabPaddingEnd="0dp"
    app:tabContentStart="0dp"
    app:tabIndicatorHeight="0dp"
    android:clipToPadding="true"
    app:tabMode="fixed" />

Then you can set paddings to "0dp". Hope it helps someone.

Answer 2

I create TabLayout from code and me help only this

for (int position = 0; position < mTabLayout.getTabCount(); position++) {
    TabLayout.Tab tab = mTabLayout.getTabAt(position);
    if (tab != null) {
        ViewCompat.setPaddingRelative(tab.view, 0, 0, 0, 0); 
    }
}

Answer 3

In case you have tried many things and none of them did work, here is what I ended up doing: just setting

android:layout_height="20dp

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <androidx.viewpager.widget.ViewPager
        android:layout_width="match_parent"
        android:layout_gravity="bottom"
        android:layout_height="130dp"/>

    <com.google.android.material.tabs.TabLayout
        android:layout_height="20dp"
        android:layout_width="match_parent"
        android:layout_gravity="bottom"
        app:tabBackground="@drawable/tab_selector"
        app:tabGravity="center"
        app:tabIndicatorHeight="0dp"/>

</FrameLayout>

Answer 4

<android.support.design.widget.TabLayout
    android:id="@+id/tabview"
    app:layout_constraintTop_toBottomOf="@+id/ivpromo"
    android:layout_width="0dp"
    app:tabMode="scrollable"
    app:tabIndicatorHeight="0dp"
    app:tabContentStart="0dp"
    android:clipToPadding="true"
    app:tabMaxWidth="45dp"
    app:tabGravity="fill"
    app:tabPaddingStart="0dp"
    app:tabPaddingEnd="0dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:tabIndicatorColor="@android:color/transparent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintLeft_toRightOf="@+id/tvcode"
    android:layout_height="40dp"/>

Answer 5

It worked for me:

In your TabLayout you have to set tabPaddingEnd and tabPaddingStart to 0dp.

In your custom view you have to set the layout_width and layout_height to match_parent in order to fill all space with your custom color.

The TabLayout:

<android.support.design.widget.TabLayout
    android:id="@+id/tl_dashboard"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:layout_alignParentBottom="true"
    app:tabGravity="fill"
    app:tabIndicatorColor="@color/colorRed"
    app:tabMode="fixed"
    app:tabPaddingStart="0dp"
    app:tabPaddingEnd="0dp"/>

And custom view:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
     <!--Your widgets-->        
</RelativeLayout>

Answer 6

I solved this by setting the margin & padding of your custom view's parent to zero, when adding new tabs to tab layout.

LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lp.setMargins(0,0,0,0);
    
TabLayout.Tab newTab = mTabsBottom.newTab().setCustomView(R.layout.view_custom_tab);
setupTabParentLayout(newTab.getCustomView(), lp);
..
..
..
private void setupTabParentLayout(View customView, LinearLayout.LayoutParams lp) {
    LinearLayout tabParent = (LinearLayout) customView.getParent();
    tabParent.setLayoutParams(lp);
    tabParent.setPadding(0,0,0,0);
}

Trick here was to use LinearLayout.LayoutParams for custom view's parent.