Gradient effect in android tutorial

Step 1 : Go to Theme Setting change App Theme to  NoActionbar.

Theme.AppCompat.Light.NoActionBar

Step 2 : Create a Tollbar

android:id="@+id/toolbar"

android:layout_height="56dp"

android:background="@color/black"

android:layout_width="match_parent" />

Step 3 : 

private Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);

toolbar.setTitle("abc");

toolbar.setTitleTextColor(getResources().getColor(R.color.white));

setSupportActionBar(toolbar);

Step 4 : 

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" > <gradient android:angle="270" android:endColor="#0000" android:startColor="@color/black" /> </shape>

Step 5 :  back to your toolbar , adding background .

<android.support.v7.widget.Toolbar

android:id="@+id/toolbar"

android:layout_height="56dp"

android:background="@drawable/blackgradient"

android:layout_width="match_parent" />

That's it .Happy Coding.