Removing line or divider between action bar and main screen in Android

Question

How can I remove line or divider between action bar and main screen? How can I change the color of this divider in android? Thanks in advance.

Solution 1

Simply insert the attribute windowContentOverlay to your theme. It's way too simple this way.

<style name="AppTheme" parent="android:Theme.Holo.Light">
    <!-- Customize your theme here. -->
    <item name="android:windowContentOverlay">@null</item>
</style>

Solution 2

On Kotlin, you can use supportActionBar?.elevation = 0f to remove the shadow of the ActionBar.

Add this code to the onCreate() function of the desired activity. For example:

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Hide ActionBar shadow
        supportActionBar?.elevation = 0f
    }

The ?. operator controls Null Pointer Exception if you have no ActionBar on this Activity.

Note: If you are not using AppCompat, call actionBar?.elevation = 0f instead.

Solution 3

None of these solutions worked for me. I ended up adding this code to the onCreate() event of my MainActivity:

actionBar = getSupportActionBar();
actionBar.setElevation(0);

Solution 4

If you use AppCompat you need set parent="Theme.AppCompat", not "Theme.AppCompat.Light" (the same stands for ActionBar) :)

For example: @style/MyActionBar true @style/MyActionBar true

<style name="MyActionBar" parent="Base.Widget.AppCompat.ActionBar">
    <item name="android:background">@android:color/transparent</item>
    <!--For compatibility-->
    <item name="background">@android:color/transparent</item>
</style>

Solution 5

This worked for me:

I just added the following line of code to the onCreate() method

 getSupportActionBar().setElevation(0);

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Comments

[yahya]

This removes only the shadow, not the line