Xamarin.ios 从Xcode 12 CarPlay模拟器启动CarPlay parking应用程序时崩溃
我们正在为CarPlay扩展Xamarin.iOS应用程序(由Xamarin.Forms提供)。当打开CarPlay模拟器时,应用程序显示在CarPlay的屏幕上,但从CarPlay模拟器启动时崩溃 以下是Info.plist场景配置:Xamarin.ios 从Xcode 12 CarPlay模拟器启动CarPlay parking应用程序时崩溃,xamarin.ios,carplay,Xamarin.ios,Carplay,我们正在为CarPlay扩展Xamarin.iOS应用程序(由Xamarin.Forms提供)。当打开CarPlay模拟器时,应用程序显示在CarPlay的屏幕上,但从CarPlay模拟器启动时崩溃 以下是Info.plist场景配置: <key>UIApplicationSceneManifest</key> <dict> <key>UISceneConfigurations</key>
<key>UIApplicationSceneManifest</key>
<dict>
<key>UISceneConfigurations</key>
<dict>
<key>CPTemplateApplicationSceneSessionRoleApplication</key>
<array>
<dict>
<key>UISceneClassName</key>
<string>CPTemplateApplicationScene</string>
<key>UISceneConfigurationName</key>
<string>ParkingPlus-Car</string>
<key>UISceneDelegateClassName</key>
<string>ParkingPlus.AppSceneDelegateImp</string>
</dict>
</array>
</dict>
</dict>
当我覆盖AppDelegate.GetConfiguration时,如下所示
public override UISceneConfiguration GetConfiguration(UIApplication application, UISceneSession connectingSceneSession, UISceneConnectionOptions options)
{
...
}
在CarPlay上点击应用程序图标时,将调用该方法。但是当我检查ConnectionSceneSession时,我发现变量成员中存在一些异常。
“CPTemplateApplicationSceneSessionRoleApplication在此平台上没有关联的枚举值”
如果继续,则应用程序将抛出一个异常,该异常似乎表明ScenedLegate未正确加载:
我的环境:
Visual studio for mac 8.7.8版
Xamarin.iOS 14.0.0
Xcode 12.0
绑定ios库时,Xamarin.ios 14似乎遗漏了一些内容。任何人都有类似的问题。我是否做错了什么,或者在Xcode/swift中将移动应用程序保留在Xamarin.Forms/Xamarin.iOS上的同时,是否有其他方法可以通过Xcode/swift实现CarPlay部件功能
感谢您的评论或帮助。在Xamarin.ios团队的帮助下,以下是此问题的完整解决方案:
这种崩溃只发生在iOS 14中吗
绑定ios库时,Xamarin.ios 14似乎丢失了一些内容。
,如果您认为是绑定ios库造成的,可以在Github中使用这些信息打开问题。@JackHua MSFT,谢谢。在我问这个问题之前的一周,我确实提出了一个问题。团队将在Xamarin.iOS上修复该漏洞。我得到了一个建议。当我让它正常工作时,我会在这里回答。太好了+1,你能展示两个AppDelegate(电话/汽车)以及Xamarin是如何加载“主”AppDelegate的吗?它决定加载哪一个?@Suplanus,将调用AppDelegate.GetConfiguration()并确定相应的UI场景(CarPlay或phone)将加载,并返回UISceneConfiguration。在该方法中,在返回UISceneConfiguration之前,必须指定场景代理实现。这就是你所需要做的。上面的代码片段包含所有必需的代码。谢谢。我在这个回购协议中做了一些测试:但它没有按预期工作。@Suplanus,你在info.plist文件中有正确的CarPlay权限和设置吗?我想是的,你可以在回购协议中看到它。我还认为模拟器不需要应用程序的授权(只有设备需要)。
public override UISceneConfiguration GetConfiguration(UIApplication application, UISceneSession connectingSceneSession, UISceneConnectionOptions options)
{
...
}
[DllImport("/usr/lib/libobjc.dylib", EntryPoint = "objc_msgSend")]
public extern static IntPtr IntPtr_objc_msgSend_IntPtr_IntPtr(IntPtr receiver, IntPtr selector, IntPtr arg1, IntPtr arg2);
public static UISceneConfiguration Create(string? name, NSString sessionRole)
{
global::UIKit.UIApplication.EnsureUIThread();
var nsname = NSString.CreateNative(name);
UISceneConfiguration sceneConfig;
sceneConfig = Runtime.GetNSObject<UISceneConfiguration>(IntPtr_objc_msgSend_IntPtr_IntPtr(Class.GetHandle("UISceneConfiguration"), Selector.GetHandle("configurationWithName:sessionRole:"), nsname, sessionRole.Handle));
NSString.ReleaseNative(nsname);
//Because only the CarPlay scene will be here to create a scene configuration
//We need manually assign the CarPlay scene delegate here!
sceneConfig.DelegateType = typeof(AppCarSceneDelegateImp);
return sceneConfig!;
}
[Export("application:configurationForConnectingSceneSession:options:")]
public UISceneConfiguration GetConfiguration(UIApplication application, UISceneSession connectingSceneSession, UISceneConnectionOptions options)
{
UIWindowSceneSessionRole sessionRole;
bool isCarPlaySceneSession = false;
try
{
//When the connecting scene is a CarPlay scene, an expected exception will be thrown
//Under this moment from Xamarin.iOS.
sessionRole = connectingSceneSession.Role;
}
catch (NotSupportedException ex)
{
if (!string.IsNullOrEmpty(ex.Message) &&
ex.Message.Contains("CPTemplateApplicationSceneSessionRoleApplication"))
{
isCarPlaySceneSession = true;
}
}
if (isCarPlaySceneSession && UIDevice.CurrentDevice.CheckSystemVersion(14,0))
{
return Create("Car", CarPlay.CPTemplateApplicationScene.SessionRoleApplication);
}
else
{
//If it is phone scene, we need the regular UIWindow scene
UISceneConfiguration phoneScene = new UISceneConfiguration("Phone", UIWindowSceneSessionRole.Application);
//And assign the scene delegate here.
phoneScene.DelegateType = typeof(AppWindowSceneDelegateImp);
return phoneScene;
}
}
public class AppWindowSceneDelegateImp : UISceneDelegate
{
public override void WillConnect(UIScene scene, UISceneSession session, UISceneConnectionOptions connectionOptions)
{
var windowScene = scene as UIWindowScene;
if (windowScene != null)
{
//Assign the Xamarin.iOS app window to this scene
UIApplication.SharedApplication.KeyWindow.WindowScene = windowScene;
UIApplication.SharedApplication.KeyWindow.MakeKeyAndVisible();
}
}
}