title: How to make bottom Tab in Android?(Xamarin.Forms)
body: <p>I am developing on a project using Xamarin.Forms.</p>
  
  <p>In TabbedPage, I would like to display the tab bar at the bottom of the screen in Android.</p>
  
  <p>So we created a CustomRenderer as shown in the sample code on the following page. </p>
  
  <p><a href="https://stackoverflow.com/questions/38446426/bottom-tabs-for-xamarin-android-in-xamarin-forms-app">Bottom Tabs for Xamarin.Android (in Xamarin.forms app)</a></p>
  
  <p>In addition, View was created as follows.</p>
  
  <pre><code>&lt;BottonTabbedPage xmlns= ...&gt;
      &lt;BottonTabbedPage.Children&gt;
          &lt;NavigationPage Title="tab1"&gt;
              &lt;x:Arguments&gt;
                  &lt;local:Tab1Page /&gt;
              &lt;/x:Arguments&gt;
          &lt;/NavigationPage&gt;
          &lt;NavigationPage Title="tab2"&gt;
              &lt;x:Arguments&gt;
                  &lt;local:Tab2Page /&gt;
              &lt;/x:Arguments&gt;
          &lt;/NavigationPage&gt;
          &lt;NavigationPage Title="tab3"&gt;
              &lt;x:Arguments&gt;
                  &lt;local:Tab3Page /&gt;
              &lt;/x:Arguments&gt;
          &lt;/NavigationPage&gt;
          &lt;NavigationPage Title="tab4"&gt;
              &lt;x:Arguments&gt;
                  &lt;local:Tab4Page /&gt;
              &lt;/x:Arguments&gt;
          &lt;/NavigationPage&gt;
      &lt;/BottonTabbedPage.Children&gt;
  &lt;/BottonTabbedPage&gt;
  </code></pre>
  
  <p>I set hide the toolbar on the TabbedPage.
  And the toolbar of TabPage1 to TabPage4 was set to display.</p>
  
  <p>As a result, it looks like the image below.</p>
  
  <p><a href="https://i.stack.imgur.com/wiku7.png" rel="nofollow noreferrer">image1</a></p>
  
  <p>The tool bar got out of the screen, and the tab bar is floated.
  I thought that designation of padding written in the sample code was incorrect and fixed it.</p>
  
  <p><a href="https://stackoverflow.com/questions/38446426/bottom-tabs-for-xamarin-android-in-xamarin-forms-app">Bottom Tabs for Xamarin.Android (in Xamarin.forms app)</a></p>
  
  <pre><code>// viewPager.SetPadding(0, -tabLayout.MeasuredHeight, 0, 0);
  viewPager.SetPadding(0, 0, 0, 0);
  </code></pre>
  
  <p>As a result, the toolbar was displayed, but the tab bar was not corrected while floating.</p>
  
  <p><a href="https://i.stack.imgur.com/VQvff.png" rel="nofollow noreferrer">image2</a></p>
  
  <p>How can I move the tab bar to the bottom of the screen?</p>
  
  <p>I do not want to use the library for move down the tab bar.
  Just want to move the tab bar down by just modifying the CustomRenderer.</p>