title: App Screen is blank when deployed through AppCenter
body: <p>I have a Xamarin.Forms app built for iOS and Android.  The application works fine when tested from Visual Studio (in Debug or Release modes and on the emulator or a device). However, when I try to deploy it through AppCenter, the app works on iOS and on Android, it displays the SplashScreen and then a blank white page.  None of my controls show up at all...on iOS it is working fine, so the Views seem to be correct..</p>
  
  <p>I hooked up the Android Device Monitor, but I do not seem to get any error messages.  I have tried several changes of the project properties (turning ProGuard and MultiDex on and off; changing the Linker settings), but nothing seems to change the behavior. </p>
  
  <p>I am out of ideas to even look for the problem...does anyone have any suggestions?  Has anyone seen this before?  Is there anywhere that lists the differences in build between Visual Studio and AppCenter?</p>
  
  <p><strong>UPDATE:</strong> I have gotten some additional logging from the Device Monitor.  There are additional log entries in the version that works, so it seems that something is not running in the deployed version (maybe associated with Google Maps?).</p>
  
  <p>The version not working has these two lines:</p>
  
  <pre><code>01-09 07:23:04.378: I/Google Maps Android API(11219): Google Play services client version: 11400000
  01-09 07:23:04.709: I/LaunchCheckinHandler(1410): Displayed {my application name}/md582f1e314fc580d8ae4e7bb0d59c62d55.MainActivity,wp,ca,537
  </code></pre>
  
  <p>The version that works has these extra log entries:</p>
  
  <pre><code>01-09 07:28:29.970: I/Google Maps Android API(12443): Google Play services client version: 11400000
  01-09 07:28:31.807: I/SFPerfTracer(735):      triggers: (rate: 0:0) (9563 sw vsyncs) (0 skipped) (121:40138 vsyncs) (123:54057)
  01-09 07:28:32.279: I/SFPerfTracer(735):      triggers: (rate: 6:1097) (compose: 0:0) (post: 0:3) (render: 0:4) (125:27407 frames) (126:32007)
  01-09 07:28:32.279: D/SFPerfTracer(735):        layers: (2:8) (StatusBar#0 (0xaf154000): 4:4927)* (com.android.systemui.ImageWallpaper#0 (0xaf113000): 0:228)* (DimLayerController/Stack=0#0 (0xaf10c000): 0:373)* (animation background stackId=1#0 (0xaf192000): 0:20)* (NavigationBar#0 (0xaf445000): 0:493) (com.android.launcher3/com.android.launcher3.CustomizationPanelLauncher#0 (0xaf424000): 0:14)* (com.android.launcher3/com.android.launcher3.CustomizationPanelLauncher#1 (0xaf2fa000): 0:154)* ({my application name}/md582f1e314fc580d8ae4e7bb0d59c62d55.SplashActivity#0 (0xaf437000): 0:3)
  01-09 07:28:32.514: W/zygote(12443): JNI RegisterNativeMethods: attempt to register 0 native methods for md58432a647068b097f9637064b8985a5e0.ViewRenderer_2
  01-09 07:28:32.652: W/zygote(12443): JNI RegisterNativeMethods: attempt to register 0 native methods for md51558244f76c53b6aeda52c8a337f2c37.ActivityIndicatorRenderer
  01-09 07:28:32.764: I/ThermalEngine(967): Thermal-Server: Thermal received msg from  override
  01-09 07:28:32.764: I/Thermal-Lib(721): Thermal-Lib-Client: Client request sent
  01-09 07:28:32.947: W/zygote(12443): JNI RegisterNativeMethods: attempt to register 0 native methods for md51558244f76c53b6aeda52c8a337f2c37.TableViewRenderer
  01-09 07:28:33.055: W/zygote(12443): JNI RegisterNativeMethods: attempt to register 0 native methods for md51558244f76c53b6aeda52c8a337f2c37.BaseCellView
  01-09 07:28:33.055: W/zygote(12443): JNI RegisterNativeMethods: attempt to register 0 native methods for md51558244f76c53b6aeda52c8a337f2c37.TextCellRenderer_TextCellView
  01-09 07:28:33.083: W/zygote(12443): JNI RegisterNativeMethods: attempt to register 0 native methods for md51558244f76c53b6aeda52c8a337f2c37.CellRenderer_RendererHolder
  01-09 07:28:33.172: W/View(12443): requestLayout() improperly called by md51558244f76c53b6aeda52c8a337f2c37.ScrollViewContainer{3f9ae0f V.E...... ......ID 0,0-1080,1444} during layout: running second layout pass**
  01-09 07:28:33.325: I/LaunchCheckinHandler(1410): Displayed {my application name}/md582f1e314fc580d8ae4e7bb0d59c62d55.MainActivity,wp,ca,3558
  </code></pre>
  
  <p>Can anyone translate these log messages into English so I have some idea where to look for the issue?  IS there something extra that needs to be done with Google Maps when it is deployed versus debug/testing?</p>
  
  <p>Thanks in advance.</p>