title: How to make layout have the same height?
body: <p>Below is my layout xml code:  </p>
  
  <pre><code>        &lt;LinearLayout
              android:id="@+id/c"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="vertical" &gt;
  
              &lt;RelativeLayout
                  android:id="@+id/a"
                  android:layout_width="match_parent"
                  android:layout_height="fill_parent"
                  android:layout_weight="1"
                  android:orientation="vertical" &gt;
              &lt;/RelativeLayout&gt;
  
              &lt;RelativeLayout
                  android:id="@+id/b"
                  android:layout_width="match_parent"
                  android:layout_height="fill_parent"
                  android:layout_weight="1"
                  android:orientation="vertical" &gt;
              &lt;/RelativeLayout&gt;
          &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>I have 2 RelativeLayout, a and b, in the LinearLayout c.<br>
  The a and b may different height.<br>
  I want to make the two RelativeLayout with the same height which the highest one.<br>
  How can I implement it?  </p>