title: Items in linear layout don't fit properly on screen
body: <p>I am using a linear layout to display image views wrappedh inside a relative layout. I want the image views to appear occupy to the whole width of the screen horizontally with no spaces in between for all screen types.
  However, i still get unwanted spaces between the views. I need help on this.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="@drawable/back_main"
      tools:context="com.example.MainActivity"&gt;
      &lt;LinearLayout
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:orientation="horizontal"
          android:weightSum="1"
          android:layout_alignParentBottom="true"&gt;
  
          &lt;ImageView
              android:layout_width="wrap_content"
              android:layout_height="56dp"
              android:layout_weight="0.25"
              android:src="@drawable/img_audio"/&gt;
  
          &lt;ImageView
              android:layout_width="wrap_content"
              android:layout_height="56dp"
              android:layout_weight="0.25"
              android:src="@drawable/img_event"/&gt;
  
          &lt;ImageView
              android:id="@+id/imageView"
              android:layout_width="wrap_content"
              android:layout_height="56dp"
              android:layout_weight="0.25"
              android:src="@drawable/img_video" /&gt;
  
          &lt;ImageView
              android:layout_width="wrap_content"
              android:layout_height="56dp"
              android:layout_weight="0.25"
              android:src="@drawable/img_more"/&gt;
      &lt;/LinearLayout&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>