title: ZXingScannerView scan area full screen
body: <p>I am scanning QR codes in my app, using ZXingScannerView. By default, the scan area is small, with a border. I want it fullscreen. Is there any way to do it?</p>
  
  <p>This is my code:</p>
  
  <pre><code>&lt;RelativeLayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_below="@+id/toolbar_top"&gt;
  
      &lt;Button
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:id="@+id/backbutton"
          android:layout_alignParentBottom="true"
          android:background="@drawable/buttonshape"
          android:text="@string/back"
          android:textColor="@color/white"/&gt;
  
      &lt;me.dm7.barcodescanner.zxing.ZXingScannerView
          android:id="@+id/scanview"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:layout_above="@+id/backbutton"
          barcodescanner:shouldScaleToFill="true"/&gt;
  
  
  
  &lt;/RelativeLayout&gt;
  
  protected void onCreate(@Nullable Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.scan_layout);
      scannerView=findViewById(R.id.scanview);
      //scannerView.setLaserColor(getColor(android.R.color.transparent));
      scannerView.setLaserEnabled(false);
      scannerView.setShouldScaleToFill(true);
      (...)
  }
  </code></pre>
  
  <p>As you can see, I tried setShoulScaleToFill(true); but it does not work.</p>
  
  <p>Is there any way to do it?</p>
  
  <p>Thank you.</p>