How to get rid of the shadow between AppBarLayout and TabLayout?

Question

I have a layout for a fragment with three tabs. The XML code of the layout is as follows:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout      xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".fragment.PatternAssignmentFragment">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="52dp"
    android:paddingTop="@dimen/appbar_padding_top"
    android:theme="@style/AppTheme.AppBarOverlay"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:layout_editor_absoluteY="8dp">

        <android.support.design.widget.TabItem
            android:id="@+id/tabItem"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tab_text_1" />

        <android.support.design.widget.TabItem
            android:id="@+id/tabItem2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tab_text_2" />

        <android.support.design.widget.TabItem
            android:id="@+id/tabItem3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tab_text_3" />

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

<android.support.v4.view.ViewPager
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/appbar" />


</android.support.constraint.ConstraintLayout>

There is a shadow showing between the AppBarLayout and TabLayout, as can be seen in the image (shadow above the red line):

I have tried various tweaks in the xml to remove it, but nothing seems to be working. Any suggestions would be greatly appreciated!

set app:elevation="0dp" inside AppBarLayout, then clean and rebuild project. I use it for my app. — Amir Dora., Jul 27 '18 at 11:43

score 4 · Accepted Answer · edited Jul 27 '18 at 11:39

4

Use app:elevation="0dp" instead of android:elevation="0dp"

edited Jul 27 '18 at 11:39

AskNilesh

67,701
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answered Jul 27 '18 at 11:38

Neha Chauhan

622
4
12

AskNilesh · Answer 2 · 2018-08-08T08:54:48.510

2

Use app:elevation="0dp" in your AppBarLayout

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="52dp"
    app:elevation="0dp"
    android:paddingTop="@dimen/appbar_padding_top"
    android:theme="@style/AppTheme.AppBarOverlay"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

or Use getSupportActionBar().setElevation(0); in your actvity

edited Aug 08 '18 at 08:54

answered Jul 27 '18 at 10:58

AskNilesh

67,701
16
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163

Thank you so much! Unfortunately this did not work, though it seems like it should work – Nora Jul 27 '18 at 11:23
1

@Nora have you tried `getSupportActionBar().setElevation(0);` – AskNilesh Jul 27 '18 at 11:24
1

Ah no! I saw that now, will try :) hopefully it works! – Nora Jul 27 '18 at 11:24
1

I really appreciate your help. Unfortunately, using getSupportActionBar().setElevation(0) did not work either. Maybe this is because I am working in a fragment and not an activity, so I had to use: ActionBar mActionBar = ((AppCompatActivity) getActivity()).getSupportActionBar(); mActionBar.setElevation(0); – Nora Jul 30 '18 at 06:24
1

@Nora agree with you please post that as an answer so it can help the other user – AskNilesh Jul 30 '18 at 06:29

Shahzad Afridi · Answer 3 · 2018-07-27T11:35:00.050

If android:elevation didn't work then try app:elevation:

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="52dp"
    android:elevation="0dp"
    android:paddingTop="@dimen/appbar_padding_top"
    android:theme="@style/AppTheme.AppBarOverlay"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

Try with CoordinatorLayout instead of Constraintlayout.

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".fragment.PatternAssignmentFragment">


    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="52dp"
        android:paddingTop="@dimen/appbar_padding_top"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:elevation="0dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:layout_editor_absoluteY="8dp">

            <android.support.design.widget.TabItem
                android:id="@+id/tabItem"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/tab_text_1" />

            <android.support.design.widget.TabItem
                android:id="@+id/tabItem2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/tab_text_2" />

            <android.support.design.widget.TabItem
                android:id="@+id/tabItem3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/tab_text_3" />

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

    <android.support.v4.view.ViewPager
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/appbar" />


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

Thank you so much for the reply! Unfortunately none of the two suggestions worked — Nora, Jul 27 '18 at 11:22
sorry no, I tried both app:elevation and android:elevation with no results — Nora, Jul 27 '18 at 11:23

Amir Dora. · Answer 4 · 2018-07-31T07:18:28.647

1

Open app_bar_main.xml and set app:elevation="0dp" inside AppBarLayout, then clean and rebuild project.

<android.support.design.widget.AppBarLayout

... app:elevation="0dp">

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

edited Jul 31 '18 at 07:18

answered Jul 27 '18 at 11:38

Amir Dora.

2,831
4
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How to get rid of the shadow between AppBarLayout and TabLayout?

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