title: Android custom button margin
body: <p>I have a custom button layout </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;item android:state_pressed="true"&gt;
          &lt;shape&gt;
              &lt;gradient android:startColor="@color/pres1"
                  android:endColor="@color/pres2" android:angle="270" /&gt;
              &lt;stroke android:width="5dp" android:color="@color/stro3" /&gt;
              &lt;corners android:radius="5dp" /&gt;
              &lt;padding android:left="10dp" android:top="20dp"
                  android:right="10dp" android:bottom="20dp" /&gt;
          &lt;/shape&gt;
      &lt;/item&gt;
      &lt;item android:state_focused="true"&gt;
          &lt;shape&gt;
              &lt;gradient android:endColor="@color/focu1"
                  android:startColor="@color/focu2" android:angle="270" /&gt;
              &lt;stroke android:width="5dp" android:color="@color/stro2" /&gt;
              &lt;corners android:radius="5dp" /&gt;
              &lt;padding android:left="10dp" android:top="20dp"
                  android:right="10dp" android:bottom="20dp" /&gt;
          &lt;/shape&gt;
      &lt;/item&gt;
      &lt;item&gt;
          &lt;shape&gt;
              &lt;gradient android:endColor="@color/norm1"
                  android:startColor="@color/norm2" android:angle="270" /&gt;
              &lt;corners android:radius="5dp" /&gt;
              &lt;padding android:left="10dp" android:top="20dp"
                  android:right="10dp" android:bottom="20dp" /&gt;
          &lt;/shape&gt;
      &lt;/item&gt;
  
  &lt;/selector&gt;
  </code></pre>
  
  <p>And for the below lay out </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:orientation="vertical" android:layout_width="fill_parent"
      android:layout_height="fill_parent" android:background="@color/all_white"&gt;
  
      &lt;TextView android:layout_width="fill_parent"
          android:layout_height="wrap_content" android:text="@string/hello"
          android:textColor="@color/all_red" /&gt;
  
      &lt;Button android:id="@+id/mq_categories" android:layout_width="fill_parent"
          android:layout_height="wrap_content" android:text="Browse Quiz Categories"
          android:background="@drawable/custom_button" /&gt;
      &lt;Button android:id="@+id/mq_random" android:layout_width="fill_parent"
          android:layout_height="wrap_content" android:text="Enter Random Quiz"
          android:background="@drawable/custom_button" /&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>following output is generated</p>
  
  <p><img src="https://i.stack.imgur.com/FESrl.png" alt="alt text"></p>
  
  <p>I need to add some margin between buttons, Any help appreciated..</p>