我们开发了Xamarin Forms应用程序，支持Android，iOS和Windows Phone。在Debug模式下部署时，该应用程序可在所有三个OS上正常工作。
在发布模式下部署时，它也可以在Android和iOS上运行。使用发布模式部署时，在Windows Phone 8.1 / 10上显示启动画面后，它立即崩溃，但是奇怪的是，使用调试模式部署时，所有工作正常。
是什么原因？
有没有办法查看应用日志以诊断崩溃原因？
编辑1：
嗨，杰拉尔德/德米特里安，
非常感谢您的回复。请在下面的“输出”窗口中找到内容。没有XamlParseException，但没有其他信息。我还附加了Windows Phone的“ Decuments \ Debug”文件夹中的调试日志。
输出窗口中的内容：
'AgHost.exe' (CoreCLR: DefaultDomain): Loaded 'C:\windows\system32\mscorlib.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Windows.RuntimeHost.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Windows.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Net.ni.dll'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Xml.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\MultiEventsApp.WinPhone.ni.DLL'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\MultiEventsApp.ni.DLL'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Parse.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Parse.Phone.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Xamarin.Forms.Core.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Runtime.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Threading.Tasks.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.Interop.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Core.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\WinMetadata\Windows.winmd'. Cannot find or open the PDB file.
Exception thrown: 'System.ArgumentNullException' in mscorlib.ni.dll
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Xamarin.Forms.Platform.WP8.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\ZXing.Net.Mobile.Forms.WindowsPhone.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\ImageCircle.Forms.Plugin.WindowsPhone.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Xamarin.Forms.Maps.WP8.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\ZXing.Net.Mobile.Forms.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\ZXingNetMobile.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\ZXing.Net.Mobile.Core.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\System.Windows.Interactivity.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\microsoft.phone.controls.toolkit.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Collections.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Resources.ResourceManager.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\ImageCircle.Forms.Plugin.Abstractions.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Xamarin.Forms.Maps.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.Maps.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Runtime.Serialization.ni.dll'. Symbols loaded.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\data\ProgramData\Microsoft\Windows\AppRepository\Packages\MultiEventsApp_1.0.0.0_neutral__74wf2z3scmpey\NI\Xamarin.Forms.Xaml.ni.DLL'. Cannot find or open the PDB file.
'AgHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Diagnostics.Debug.ni.dll'. Symbols loaded.
Exception thrown: 'Xamarin.Forms.Xaml.XamlParseException' in Xamarin.Forms.Xaml.ni.DLL
Exception thrown: 'System.Reflection.TargetInvocationException' in mscorlib.ni.dll
Exception thrown: 'System.Reflection.TargetInvocationException' in Microsoft.Phone.ni.dll
来自Documents \ Debug文件夹的内容：
Dump Summary
------------
Dump File: MultiEventsApp with exception E0434352 on 1-07-2017 17.55.dmp : C:\Users\Pocket_User\Desktop\MultiEventsApp with exception E0434352 on 1-07-2017 17.55.dmp
Last Write Time: 1/7/2017 5:55:50 PM
Process Name: aghost.exe : aghost.exe
Process Architecture: ARM
Exception Code: 0xE0434352
Exception Information:
Heap Information: Present
System Information
------------------
OS Version: 10.0.14393
CLR Version(s): 4.5.22926.0
Modules
-------
Module Name Module Path Module Version
----------- ----------- --------------
aghost.exe aghost.exe 10.0.14393.576
ntdll.dll ntdll.dll 10.0.14393.576
KERNELBASE.dll KERNELBASE.dll 10.0.14393.576
combase.dll combase.dll 10.0.14393.576
ucrtbase.dll ucrtbase.dll 10.0.14393.576
RPCRT4.dll RPCRT4.dll 10.0.14393.576
kernel32legacy.dll kernel32legacy.dll 10.0.14393.576
bcryptPrimitives.dll bcryptPrimitives.dll 10.0.14393.576
msvcrt.dll msvcrt.dll 7.0.14393.576
kernel.appcore.dll kernel.appcore.dll 10.0.14393.576
OLEAUT32.dll OLEAUT32.dll 10.0.14393.576
shcore.dll shcore.dll 10.0.14393.576
AgHostSvcs.dll AgHostSvcs.dll 10.0.14393.576
TaskHostCore.dll TaskHostCore.dll 10.0.14393.576
msvcp_win.dll msvcp_win.dll 10.0.14393.576
wintypes.dll wintypes.dll 10.0.14393.576
OnDemandBrokerClient.dll OnDemandBrokerClient.dll 10.0.14393.576
advapi32legacy.dll advapi32legacy.dll 10.0.14393.576
sechost.dll sechost.dll 10.0.14393.576
CoreUIComponents.dll CoreUIComponents.dll 0.0.0.0
CoreMessaging.dll CoreMessaging.dll 10.0.14393.576
EMCLIENT.dll EMCLIENT.dll 10.0.14393.576
TASKHOSTSVCS.dll TASKHOSTSVCS.dll 10.0.14393.576
WpPortingLibrary.dll WpPortingLibrary.dll 0.0.0.0
SspiCli.dll SspiCli.dll 10.0.14393.576
minuser.dll minuser.dll 0.0.0.0
win32u.dll win32u.dll 10.0.14393.576
gdi32.dll gdi32.dll 10.0.14393.576
modernapiexthost.dll modernapiexthost.dll 0.0.0.0
SecRuntime.dll SecRuntime.dll 0.0.0.0
gdi32min.dll gdi32min.dll 10.0.14393.576
WpCoreUtil.DLL WpCoreUtil.DLL 0.0.0.0
msvcp110_win.dll msvcp110_win.dll 10.0.14393.576
storageusage.dll storageusage.dll 10.0.14393.576
procthreadexthost.dll procthreadexthost.dll 0.0.0.0
ntmarta.dll ntmarta.dll 10.0.14393.576
CoreApplicationShim.dll CoreApplicationShim.dll 0.0.0.0
twinapi.appcore.dll twinapi.appcore.dll 10.0.14393.576
bcrypt.dll bcrypt.dll 10.0.14393.576
PsmApp.dll PsmApp.dll 10.0.14393.576
AppModelProxy.dll AppModelProxy.dll 0.0.0.0
pacmantileshim.dll pacmantileshim.dll 10.0.14393.576
VEEventDispatcher.dll VEEventDispatcher.dll 10.0.14393.576
ActXPrxy.dll ActXPrxy.dll 10.0.14393.576
pacmanclient.dll pacmanclient.dll 10.0.14393.576
RMClient.dll RMClient.dll 10.0.14393.576
mrmcorer.dll mrmcorer.dll 10.0.14393.576
windows.ui.dll windows.ui.dll 10.0.14393.576
dcomp.dll dcomp.dll 10.0.14393.576
inputhost.dll inputhost.dll 0.0.0.0
textinputframework.dll textinputframework.dll 10.0.14393.576
CRYPTBASE.dll CRYPTBASE.dll 10.0.14393.576
npctrl.dll npctrl.dll 0.0.0.0
PROPSYS.dll PROPSYS.dll 7.0.14393.576
agcore.dll agcore.dll 4.1.60221.0
SL_InterprocDll.dll SL_InterprocDll.dll 0.0.0.0
WS2_32.dll WS2_32.dll 10.0.14393.576
CRYPT32.dll CRYPT32.dll 10.0.14393.576
d3d11.dll d3d11.dll 10.0.14393.576
WININET.dll WININET.dll 11.0.14393.576
ole32_wp.dll ole32_wp.dll 10.0.14393.576
urlmon.dll urlmon.dll 11.0.14393.576
PlatformInterop.dll PlatformInterop.dll 0.0.0.0
MSASN1.dll MSASN1.dll 10.0.14393.576
dxgi.dll dxgi.dll 10.0.14393.576
iertutil.dll iertutil.dll 11.0.14393.576
shlwapi.dll shlwapi.dll 10.0.14393.576
cfgmgr32.dll cfgmgr32.dll 10.0.14393.576
dsclient.dll dsclient.dll 10.0.14393.576
Windows.Storage.dll Windows.Storage.dll 10.0.14393.576
powrprof.dll powrprof.dll 10.0.14393.576
profapi.dll profapi.dll 10.0.14393.576
coreclr.dll coreclr.dll 4.5.22926.0
CRYPTSP.dll CRYPTSP.dll 10.0.14393.576
werapiexthost.dll werapiexthost.dll 0.0.0.0
mscorlib.ni.dll mscorlib.ni.dll 4.5.22926.0
rsaenh.dll rsaenh.dll 10.0.14393.576
System.Windows.RuntimeHost.ni.dll System.Windows.RuntimeHost.ni.dll 2.0.6.0
System.Windows.ni.dll System.Windows.ni.dll 4.7.50915.0
System.Net.ni.dll System.Net.ni.dll 4.7.50915.0
System.ni.dll System.ni.dll 4.5.22926.0
System.Xml.ni.dll System.Xml.ni.dll 4.5.22926.0
appchromeapi.dll appchromeapi.dll 0.0.0.0
qcdx11um8612.dll qcdx11um8612.dll 9.18.2074.0
MSVCR120.dll MSVCR120.dll 12.0.21005.1
qcdx11compiler8612.dll qcdx11compiler8612.dll 1.0.2074.0
MSVCP120.dll MSVCP120.dll 12.0.21005.1
ShellChromeAPI.dll ShellChromeAPI.dll 0.0.0.0
MultiEventsApp.WinPhone.ni.DLL MultiEventsApp.WinPhone.ni.DLL 1.0.0.0
Microsoft.Phone.ni.dll Microsoft.Phone.ni.dll 0.0.0.0
MultiEventsApp.ni.DLL MultiEventsApp.ni.DLL 1.0.0.0
Parse.ni.DLL Parse.ni.DLL 1.7.0.0
Parse.Phone.ni.DLL Parse.Phone.ni.DLL 1.7.0.0
Xamarin.Forms.Core.ni.DLL Xamarin.Forms.Core.ni.DLL 2.0.0.0
System.Runtime.ni.dll System.Runtime.ni.dll 4.5.22926.0
System.Threading.Tasks.ni.dll System.Threading.Tasks.ni.dll 4.5.22926.0
Microsoft.Phone.Interop.ni.dll Microsoft.Phone.Interop.ni.dll 0.0.0.0
phoneinfo.dll phoneinfo.dll 0.0.0.0
System.Core.ni.dll System.Core.ni.dll 4.5.22926.0
wpnapps.dll wpnapps.dll 10.0.14393.576
XmlLite.dll XmlLite.dll 10.0.14393.576
Windows.ni.winmd Windows.ni.winmd 0.0.0.0
Windows.winmd Windows.winmd 0.0.0.0
StorageProxy.dll StorageProxy.dll 0.0.0.0
Windows.Storage.ApplicationData.dll Windows.Storage.ApplicationData.dll 10.0.14393.576
YPerfHealthLogger.dll YPerfHealthLogger.dll 0.0.0.0
dwrite.dll dwrite.dll 10.0.14393.576
Xamarin.Forms.Platform.WP8.ni.DLL Xamarin.Forms.Platform.WP8.ni.DLL 2.0.0.0
ZXing.Net.Mobile.Forms.WindowsPhone.ni.DLL ZXing.Net.Mobile.Forms.WindowsPhone.ni.DLL 2.1.47.0
ImageCircle.Forms.Plugin.WindowsPhone.ni.DLL ImageCircle.Forms.Plugin.WindowsPhone.ni.DLL 1.8.1.8
Xamarin.Forms.Maps.WP8.ni.DLL Xamarin.Forms.Maps.WP8.ni.DLL 2.0.0.0
ZXing.Net.Mobile.Forms.ni.DLL ZXing.Net.Mobile.Forms.ni.DLL 2.1.47.0
ZXingNetMobile.ni.DLL ZXingNetMobile.ni.DLL 2.1.47.0
ZXing.Net.Mobile.Core.ni.DLL ZXing.Net.Mobile.Core.ni.DLL 2.1.47.0
System.Windows.Interactivity.ni.DLL System.Windows.Interactivity.ni.DLL 3.0.30924.0
microsoft.phone.controls.toolkit.ni.DLL microsoft.phone.controls.toolkit.ni.DLL 8.0.1.0
System.Collections.ni.dll System.Collections.ni.dll 4.5.22926.0
System.Resources.ResourceManager.ni.dll System.Resources.ResourceManager.ni.dll 4.5.22926.0
ImageCircle.Forms.Plugin.Abstractions.ni.DLL ImageCircle.Forms.Plugin.Abstractions.ni.DLL 1.8.1.8
Xamarin.Forms.Maps.ni.DLL Xamarin.Forms.Maps.ni.DLL 2.0.0.0
Microsoft.Phone.Maps.ni.dll Microsoft.Phone.Maps.ni.dll 3.0.30701.2350
System.Runtime.Serialization.ni.dll System.Runtime.Serialization.ni.dll 4.5.22926.0
Xamarin.Forms.Xaml.ni.DLL Xamarin.Forms.Xaml.ni.DLL 2.0.0.0
System.Diagnostics.Debug.ni.dll System.Diagnostics.Debug.ni.dll 4.5.22926.0
errorhandlingext.dll errorhandlingext.dll 10.0.10011.16384
mintdh.dll mintdh.dll 10.0.14393.576
编辑2：
我在这个问题上取得了一些进展。在我的情况下，FontFamily属性引起了问题。因此，如果删除fontfamily属性并在“发布”模式下运行该应用程序，则不会再引发异常，但是在设备上呈现屏幕的方式与在“调试”模式下呈现的方式完全不同。
我已经附上了两个屏幕截图。我尝试按照John的指示在Forms.Init中添加第二个选项，但是由于该方法不支持第二个选项，这给了我错误。
调试模式屏幕截图
发布模式屏幕截图
关于上述行为，我有以下问题：
有什么建议么？
终于，我的问题解决了。如果您有相同的问题，请在下面找到解决方案。
逐步重新创建该项目后，发现我的应用程序运行良好，直到我在应用程序中添加了Xamarin.Forms.Maps包。我正在安装最新版本的Maps程序包，该程序会将其从属程序包升级到更高版本。Maps插件导致Xamarin.Forms程序包从2.3.2.127升级到2.3.3.180。因此，当我在发行模式下使用此版本的Xamarin Forms部署应用程序时，这导致了应用程序崩溃和上面我先前的回复中提到的UI问题。
为了解决该问题，我退回到了与2.3a.1.2127版本的Xamarin Forms和voila兼容的Maps的爱好者版本！
似乎Xamarin Forms的2.3.3.180版本中存在错误。
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