我正在使用(IOS and Android)开发一个Xamarin Forms应用程序。
我正在尝试运行我的应用程序Android版本但不幸的是，应用程序在启动画面后崩溃。
我尝试过Emulator以及physical device(Moto G3)。
我已使用最新Xamarin studio版本更新了stable。我已尝试更改工作solution directory，但同样的问题仍然存在。
我已将断点保留在SplashActivity OnCreate()中，但调试器未出现在此行中。
IDE - Xamarin Studio 6.1.1（版本17）
操作系统 - Mac OS 10.11.5
Xamarin.Android -7.0.1.3
SplashActivity.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Util;
using Android.Views;
using Android.Widget;
namespace SampleApp.Droid
{
[Activity(Label = "SampleApp",Theme = "@style/MyTheme.Splash", MainLauncher = true)]
public class signup : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
}
protected override void OnResume()
{
base.OnResume();
Task startupWork = new Task(() =>
{
//Log.Debug(TAG, "Performing some startup work that takes a bit of time.");
Task.Delay(5000); // Simulate a bit of startup work.
//Log.Debug(TAG, "Working in the background - important stuff.");
});
startupWork.ContinueWith(t =>
{
//Log.Debug(TAG, "Work is finished - start Activity1.");
StartActivity(new Intent(Application.Context, typeof(MainActivity)));
}, TaskScheduler.FromCurrentSynchronizationContext());
startupWork.Start();
}
}
}
MainActivity.cs
using System;
using Android.App;
using Android.Content;
using Android.Content.PM;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using Acr.UserDialogs;
using Xamarin.Forms;
using Plugin.Toasts;
using XLabs.Platform.Services;
using XLabs.Platform.Device;
using XLabs.Platform.Services.Media;
using XLabs.Ioc;
namespace SampleApp.Droid
{
[Activity(Label = "SampleApp.Droid", Icon = "@drawable/icon", Theme = "@style/MyTheme", MainLauncher = false, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
UserDialogs.Init(this);
SetXLabsInitialization();
LoadApplication(new App());
}
private void SetXLabsInitialization()
{
var container = new SimpleContainer();
container.Register<IDevice>(t => AndroidDevice.CurrentDevice)
.Register<IPhoneService>(t => t.Resolve<IDevice>().PhoneService)
.Register<IAudioStream>(t => t.Resolve<IDevice>().Microphone)
.Register<INetwork>(t => t.Resolve<IDevice>().Network)
.Register<IDependencyContainer>(container);
Resolver.SetResolver(container.GetResolver());
}
}
}
应用输出
Forwarding debugger port 8883
Detecting existing process
> am start -n "com.excelblaze.SampleApp/md51642ab35ccd81a05989cf18bf9b46112.signup"
> Starting: Intent { cmp=com.excelblaze.SampleApp/md51642ab35ccd81a05989cf18bf9b46112.signup }
Loaded assembly: SampleApp.Droid.dll
Loaded assembly: Mono.Android.Export.dll [External]
Loaded assembly: Xamarin.Android.Support.v4.dll [External]
Loaded assembly: Xamarin.Android.Support.Vector.Drawable.dll [External]
Loaded assembly: Xamarin.Android.Support.Animated.Vector.Drawable.dll [External]
Loaded assembly: Xamarin.Android.Support.v7.AppCompat.dll [External]
Loaded assembly: Xamarin.Android.Support.v7.RecyclerView.dll [External]
Loaded assembly: Xamarin.Android.Support.Design.dll [External]
Loaded assembly: Xamarin.Android.Support.v7.CardView.dll [External]
Loaded assembly: Xamarin.Android.Support.v7.MediaRouter.dll [External]
Loaded assembly: Xamarin.Forms.Platform.Android.dll [External]
Loaded assembly: FormsViewGroup.dll [External]
Loaded assembly: Xamarin.Forms.Core.dll [External]
Loaded assembly: Xamarin.Forms.Xaml.dll [External]
Loaded assembly: Xamarin.Forms.Platform.dll [External]
Loaded assembly: AndHUD.dll [External]
Loaded assembly: Splat.dll [External]
Loaded assembly: Acr.Support.Android.dll [External]
Loaded assembly: Acr.UserDialogs.dll [External]
Loaded assembly: Acr.UserDialogs.Interface.dll [External]
Loaded assembly: Newtonsoft.Json.dll [External]
Loaded assembly: Rg.Plugins.Popup.dll [External]
Loaded assembly: Rg.Plugins.Popup.Droid.dll [External]
Loaded assembly: Xamarin.GooglePlayServices.Basement.dll [External]
Loaded assembly: Xamarin.GooglePlayServices.Base.dll [External]
Loaded assembly: Xamarin.GooglePlayServices.Maps.dll [External]
Loaded assembly: Xamarin.Forms.Maps.Android.dll [External]
Loaded assembly: Xamarin.Forms.Maps.dll [External]
Loaded assembly: Toasts.Forms.Plugin.Abstractions.dll [External]
Loaded assembly: Toasts.Forms.Plugin.Droid.dll [External]
Loaded assembly: ExifLib.dll [External]
Loaded assembly: XLabs.Core.dll [External]
Loaded assembly: XLabs.Platform.dll [External]
Loaded assembly: XLabs.Platform.Droid.dll [External]
Loaded assembly: XLabs.Ioc.dll [External]
Loaded assembly: SampleApp.dll
Loaded assembly: XamForms.Controls.Calendar.dll [External]
Loaded assembly: Plugin.Geolocator.Abstractions.dll [External]
Loaded assembly: Plugin.Geolocator.dll [External]
Loaded assembly: Mono.Android.dll [External]
Loaded assembly: Java.Interop.dll [External]
Loaded assembly: System.dll [External]
Loaded assembly: System.Core.dll [External]
错误/警告 - 构建输出
Build started 10/31/2016 7:20:04 PM.
__________________________________________________
Project "/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/UITests/SampleApp.UITests.csproj" (Build target(s)):
Target PrepareForBuild:
Configuration: Debug Platform: AnyCPU
Target ResolveProjectReferences:
Project "/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj" (GetTargetPath target(s)):
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj: warning : Target '_CopyOutOfDateSourceItemsToOutputDirectory', not found in the project
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj: warning : Target 'XapPackager', not found in the project
Target BclBuildValidateNugetPackageReferences:
: warning : All projects referencing SampleApp.iOS.csproj must install nuget package MSArosoft.Bcl.Build. For more information, see http://go.mSArosoft.com/fwlink/?LinkID=317569.
Done building project "/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj".
Project "/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/Droid/SampleApp.Droid.csproj" (GetTargetPath target(s)):
Target BclBuildValidateNugetPackageReferences:
: warning : All projects referencing SampleApp.Droid.csproj must install nuget package MSArosoft.Bcl.Build. For more information, see http://go.mSArosoft.com/fwlink/?LinkID=317569.
Done building project "/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/Droid/SampleApp.Droid.csproj".
Target GenerateSatelliteAssemblies:
No input files were specified for target GenerateSatelliteAssemblies, skipping.
Target _GenerateTargetFrameworkMonikerAttribute:
Skipping target "_GenerateTargetFrameworkMonikerAttribute" because its outputs are up-to-date.
Target CoreCompile:
Skipping target "CoreCompile" because its outputs are up-to-date.
Done building project "/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/UITests/SampleApp.UITests.csproj".
Build succeeded.
Warnings:
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/UITests/SampleApp.UITests.csproj (Build) ->
/Library/Frameworks/Mono.framework/Versions/4.6.1/lib/mono/xbuild/14.0/bin/MSArosoft.Common.targets (ResolveProjectReferences target) ->
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj (GetTargetPath) ->
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj: warning : Target '_CopyOutOfDateSourceItemsToOutputDirectory', not found in the project
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj: warning : Target 'XapPackager', not found in the project
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/UITests/SampleApp.UITests.csproj (Build) ->
/Library/Frameworks/Mono.framework/Versions/4.6.1/lib/mono/xbuild/14.0/bin/MSArosoft.Common.targets (ResolveProjectReferences target) ->
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/iOS/SampleApp.iOS.csproj (GetTargetPath) ->
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/packages/MSArosoft.Bcl.Build.1.0.21/build/MSArosoft.Bcl.Build.targets (BclBuildValidateNugetPackageReferences target) ->
: warning : All projects referencing SampleApp.iOS.csproj must install nuget package MSArosoft.Bcl.Build. For more information, see http://go.mSArosoft.com/fwlink/?LinkID=317569.
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/UITests/SampleApp.UITests.csproj (Build) ->
/Library/Frameworks/Mono.framework/Versions/4.6.1/lib/mono/xbuild/14.0/bin/MSArosoft.Common.targets (ResolveProjectReferences target) ->
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/Droid/SampleApp.Droid.csproj (GetTargetPath) ->
/Users/umar_shazuli/Documents/Umar/SA/WorkingCode/SA_31_10_2016/Mobile/packages/MSArosoft.Bcl.Build.1.0.21/build/MSArosoft.Bcl.Build.targets (BclBuildValidateNugetPackageReferences target) ->
: warning : All projects referencing SampleApp.Droid.csproj must install nuget package MSArosoft.Bcl.Build. For more information, see http://go.mSArosoft.com/fwlink/?LinkID=317569.
4 Warning(s)
0 Error(s)
Time Elapsed 00:00:00.5679990
---------------------- Done ----------------------
Build: 0 errors, 12 warnings
答案 0 :(得分：1)
如果SplashActivity启动但之后崩溃，我建议你注释掉以下内容。
在OnCreate的MainActivity上缩小问题范围：
可能是其中一个需要不存在的程序集。
如果这些初始化没有破坏它，那么在Xamarin诊断输出日志中查找Xaml错误。