Button not auto margin when set background

Question

I have problem in create layout android. I use linearlayout to add 4 buttons inside this with

param layout_width="0dp" 

and

layout_weight="1"

All button margin is very good.

<LinearLayout
    android:id="@+id/lnlayout" 
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:orientation="horizontal"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:background="#000000">

    <Button
        android:id="@+id/btnEffectVideo"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="@string/effect_video"
        android:padding="5dp"/>

    <Button
        android:id="@+id/btnDgAddMusic"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:text="@string/add_music" />

    <Button
        android:id="@+id/btnDgMoreText"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:text="@string/more_text" />
    <Button
        android:id="@+id/btnSubmit"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:text="@string/save" />
</LinearLayout>

But when i change background button it not margin.

CustomButton.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:state_pressed="true" >
  <shape>
  <solid
   android:color="#696969" />
  <stroke
   android:width="1dp"
   android:color="#FFFFFF" />
  <corners
   android:radius="3dp" />
  </shape>
 </item>
  <item>
  <shape>
  <gradient
   android:startColor="#F6BF00"
   android:endColor="#992f2f"
   android:angle="270" />
  <stroke
   android:width="1dp"
   android:color="#FFFFFF" />
  <corners
   android:radius="5dp" />
 </shape>
 </item>
</selector>

please help me solve this

Answer 1

just set margin with button like

android:layout_margin="10dp"

It will take all margin from all side :)