Simple Notification

Example:

                                    
                                        <?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout 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:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:padding="16dp" 
    tools:context=".MainActivity"> 

    <Button 
        android:id="@+id/simple_notification" 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        android:text="Simple Notification" 
        android:textColor="@android:color/white" 
        android:backgroundTint="@color/colorPrimary" 
        android:textAllCaps="false" 
        android:layout_centerInParent="true"/> 

</RelativeLayout>