C# JniHandleOwnership类代码示例

		public MainApp(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
		{
			// Catch unhandled exceptions
			// Found at http://xandroid4net.blogspot.de/2013/11/how-to-capture-unhandled-exceptions.html
			// Add an exception handler for all uncaught exceptions.
			AndroidEnvironment.UnhandledExceptionRaiser += AndroidUnhandledExceptionHandler;
			AppDomain.CurrentDomain.UnhandledException += ApplicationUnhandledExceptionHandler;

			// Save prefernces instance
			Main.Prefs = new PreferenceValues(PreferenceManager.GetDefaultSharedPreferences(this));

			// Get path from preferences or default path
			string path = Main.Prefs.GetString("filepath", Path.Combine(global::Android.OS.Environment.ExternalStorageDirectory.AbsolutePath, "WF.Player"));

			try {
				if (!Directory.Exists (path))
					Directory.CreateDirectory (path);
			}
			catch {
			}

			if (!Directory.Exists (path))
			{
				AlertDialog.Builder builder = new AlertDialog.Builder (this);
				builder.SetTitle (GetString (Resource.String.main_error));
				builder.SetMessage(String.Format(GetString(Resource.String.main_error_directory_not_found), path));
				builder.SetCancelable (true);
				builder.SetNeutralButton(Resource.String.ok,(obj,arg) => { });
				builder.Show ();
			} else {
				Main.Path = path;
				Main.Prefs.SetString("filepath", path);
			}
		}

        public D3Calc(IntPtr javaReference, JniHandleOwnership transfer)
            : base(javaReference, transfer)
        {
            RegisterPcl.Register();

            D3Api.ApiKey = ApiKey;
        }

 public MainApplication(IntPtr javaReference, JniHandleOwnership transfer)
     : base(javaReference, transfer)
 {
     var builder = new ContainerBuilder();
     builder.Register(x => this).As<IApplicationLifecycle>();
     builder.Update(ViewLocator.Instance.Container);
     RegisterReceiver(new NetworkInformation(), new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE"));
 }

        public CreateLoginUserApplication(IntPtr intPtr, JniHandleOwnership jho)
            : base(intPtr, jho)
        {
            // TODO: Go to http://dev.buddyplatform.com to get an app ID and app key.
            Buddy.Init ("\Your App ID", "\Your App Key");

            CreateLoginUserLibrary.ActivtyBase.HomeActivityType = typeof(CreateLoginUserSample.ViewUserActivity);
        }

        public Application(IntPtr javaReference, JniHandleOwnership transfer)
            : base(javaReference, transfer) {


            //TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;
            AndroidEnvironment.UnhandledExceptionRaiser += AndroidEnvironment_UnhandledExceptionRaiser;
            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
        }

 public CustomApplication(IntPtr handle, JniHandleOwnership ownerShip)
     : base(handle, ownerShip)
 {
     Iconics.RegisterFont(new Meteoconcs());
       Iconics.RegisterFont(new Octicons());
       Iconics.RegisterFont(new CommunityMaterial());
       Iconics.RegisterFont(new CustomFont());
 }

        public AlbumsApplication(IntPtr intPtr, JniHandleOwnership jho)
            : base(intPtr, jho)
        {
            // TODO: Go to http://dev.buddyplatform.com to get an app ID and app password.
            Buddy.Init ("", "");

            CreateLoginUserLibrary.ActivtyBase.HomeActivityType = typeof(AlbumsSample.AlbumsActivity);
        }

 /// <summary>
 /// The constructor of the application class.
 /// </summary>
 /// <param name="javaReference"></param>
 /// <param name="transfer"></param>
 public Application(IntPtr javaReference, JniHandleOwnership transfer)
     : base(javaReference, transfer)
 {
     if (Default != null)
     {
         Default = this;
     }
 }

	    protected ZXingSurfaceView(IntPtr javaReference, JniHandleOwnership transfer) 
            : base(javaReference, transfer) 
        {
            lastPreviewAnalysis = DateTime.Now.AddMilliseconds(options.InitialDelayBeforeAnalyzingFrames);

            this.surface_holder = Holder;
            this.surface_holder.AddCallback(this);
            this.surface_holder.SetType(SurfaceType.PushBuffers);

            this.tokenSource = new System.Threading.CancellationTokenSource();
	    }

		public MainApplication (IntPtr handle, JniHandleOwnership transfer)
			: base (handle, transfer)
		{
			BaseAppContext.Init();

			//platform specific mappings
			DI.MapClassToInterface<GetContactsDelegate, IGetContactsDelegate> ();

			GetContactsDelegate.ABook = new Xamarin.Contacts.AddressBook (this.ApplicationContext);
		
		}

        public static ICollection FromJniHandle(IntPtr handle, JniHandleOwnership transfer)
        {
            if (handle == IntPtr.Zero)
                return null;

            IJavaObject inst = Java.Lang.Object.PeekObject (handle);
            if (inst == null)
                inst = new JavaCollection (handle, transfer);
            else
                JNIEnv.DeleteRef (handle, transfer);

            return (ICollection) inst;
        }

        internal static Stream FromNative(IntPtr handle, JniHandleOwnership transfer)
        {
            if (handle == IntPtr.Zero)
                return null;

            IJavaObject inst = Java.Lang.Object.PeekObject (handle);

            if (inst == null)
                inst = Java.Interop.TypeManager.CreateInstance (handle, transfer);
            else
                JNIEnv.DeleteRef (handle, transfer);

            return new OutputStreamInvoker ((Java.IO.OutputStream)inst);
        }

		public QmunicateApplication (IntPtr handle, JniHandleOwnership transfer)
			: base (handle, transfer)
		{
			App.Version = AppVersionNumber (this);

            // Create the broadcast receiver and bind the event handler
            // so that the app gets updates of the network connectivity status
            var _broadcastReceiver = new NetworkStatusBroadcastReceiver();
            _broadcastReceiver.ConnectionStatusChanged += OnNetworkStatusChanged;

            // Register the broadcast receiver
            global::Android.App.Application.Context.RegisterReceiver(_broadcastReceiver,
                new IntentFilter(ConnectivityManager.ConnectivityAction));
        }

		public Throwable (IntPtr handle, JniHandleOwnership transfer)
			: base (_GetMessage (handle), _GetInnerException (handle))
		{
			if (GetType () == typeof (Throwable))
				is_generated = true;

			// Check if handle was preset by our java activation mechanism
			if (this.handle != IntPtr.Zero) {
				needsActivation = true;
				handle          = this.handle;
				if (handle_type != 0)
					return;
				transfer        = JniHandleOwnership.DoNotTransfer;
			}

			SetHandle (handle, transfer);
		}

        public MainApplication(IntPtr handle, JniHandleOwnership transfer)
            : base(handle, transfer)
        {
            _logger = new Logger();

            Insights.Initialize(Settings.XamarinInsightsApiKey, ApplicationContext);

            AndroidEnvironment.UnhandledExceptionRaiser += (sender, args) =>
            {
                args.Handled = false;
                _logger.Log(args.Exception as Exception, LogType.ERROR);
            };
            AppDomain.CurrentDomain.UnhandledException += (s, e) =>
            {
                _logger.Log(e.ExceptionObject as Exception, LogType.ERROR);
            };
        }