title: Window doesn't fill all screen
body: <p>I'm a beginner with Xamarin and this is my first App. I'm doing just the first steps: create a view. My problem is that it doesn't fill all the screen. I deleted the view and then, I created a Window with the same problem. </p>
  
  <p>This is the XIB:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="no"?&gt;
  &lt;document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES"&gt;
      &lt;dependencies&gt;
          &lt;plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204"/&gt;
      &lt;/dependencies&gt;
      &lt;objects&gt;
          &lt;placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="LoginView"&gt;
              &lt;connections&gt;
  
                &lt;outlet property="window" destination="7" id="176-fQ-JAJ"/&gt;
              &lt;/connections&gt;
          &lt;/placeholder&gt;
          &lt;placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/&gt;
          &lt;window opaque="NO" clearsContextBeforeDrawing="NO" contentMode="scaleToFill" id="7"&gt;
              &lt;rect key="frame" x="0.0" y="0.0" width="320" height="568"/&gt;
              &lt;color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/&gt;
              &lt;simulatedStatusBarMetrics key="simulatedStatusBarMetrics"/&gt;
              &lt;simulatedScreenMetrics key="simulatedDestinationMetrics" type="retina4"/&gt;
              &lt;point key="canvasLocation" x="-0.2000008" y="20.2"/&gt;
              &lt;subviews&gt;
                  &lt;label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" text="Label" lineBreakMode="tailTruncation" minimumFontSize="10" id="8" translatesAutoresizingMaskIntoConstraints="NO" fixedFrame="YES"&gt;
                      &lt;rect key="frame" x="139" y="33" width="42" height="21"/&gt;
                      &lt;color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/&gt;
                      &lt;fontDescription key="fontDescription" type="system" pointSize="17"/&gt;
                      &lt;color key="textColor" cocoaTouchSystemColor="darkTextColor"/&gt;
                      &lt;nil key="highlightedColor"/&gt;
                  &lt;/label&gt;
              &lt;/subviews&gt;
          &lt;/window&gt;
      &lt;/objects&gt;
      &lt;resources&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_120x120.png" width="120" height="120"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_152x152.png" width="152" height="152"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_180x180.png" width="180" height="180"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_29x29.png" width="29" height="29"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_40x40.png" width="40" height="40"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_58x58.png" width="58" height="58"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_76x76.png" width="76" height="76"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_80x80.png" width="80" height="80"/&gt;
          &lt;image name="Media.xcassets/AppIcons.appiconset/ic_launcher_87x87.png" width="87" height="87"/&gt;
      &lt;/resources&gt;
  &lt;/document&gt;
  </code></pre>
  
  <p>What am I doing wrong? Thanks in advance.</p>
  
  <p>Edit. </p>
  
  <pre><code> public partial class LoginView : BaseView&lt;LoginViewModel&gt;
      {
          public LoginView() : base("LoginView", null)
          {
          }
  
          public override void DidReceiveMemoryWarning()
          {
              base.DidReceiveMemoryWarning();
  
              // Release any cached data, images, etc that aren't in use.
          }
  
          public override void ViewDidLoad()
          {
              base.ViewDidLoad();
  
              NavigationController.NavigationBarHidden = true;
              // Perform any additional setup after loading the view, typically from a nib.
          }
  
      }
  </code></pre>
  
  <p>BaseView:</p>
  
  <pre><code> public abstract class BaseView&lt;TViewModel&gt; : MvxViewController, IView&lt;TViewModel&gt; where TViewModel : IViewModel
      {
          private IConfigurationService configurationService;
          private IGlobalizationService globalizationService;
  
          public BaseView(string nibName, NSBundle bundle) : base(nibName, bundle)
          { }
  
          public IConfigurationService ConfigurationService
          {
              get
              {
                  if (this.configurationService == null)
                  {
                      this.configurationService = Mvx.Resolve&lt;IConfigurationService&gt;();
                  }
  
                  return this.configurationService;
              }
          }
          public IGlobalizationService GlobalizationService
          {
              get
              {
                  if (this.globalizationService == null)
                  {
                      this.globalizationService = Mvx.Resolve&lt;IGlobalizationService&gt;();
                  }
  
                  return this.globalizationService;
              }
          }
          public new TViewModel ViewModel
          {
              get { return (TViewModel)base.ViewModel; }
              set { base.ViewModel = value; }
          }
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/huSKg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/huSKg.png" alt="This is how the view is shwoing"></a></p>