private void HandleMethodCall(FlutterMethodCall call, FlutterResult callback)
{
// Return an error if Flutter is invoking method calls through method channel
// when bridge is configured for WebSocket communication
if (Mode == FlutnetBridgeMode.WebSocket)
{
callback(ConstantsEx.FlutterMethodNotImplemented);
return;
}
// Extract target method information from MethodCall.Method
FlutnetMethodInfo methodInfo;
NSObject dartReturnValue;
try
{
methodInfo = JsonConvert.DeserializeObject <FlutnetMethodInfo>(call.Method, FlutterInterop.JsonSerializerSettings);
dartReturnValue = FlutterInterop.ToMethodChannelResult(0);
}
catch (Exception ex)
{
callback(FlutterError.Create(FlutnetErrorCode.OperationNotImplemented.ToString(), ex.Message, null));
return;
}
// Send an empty - successful - response to immediately free Flutter thread
callback(dartReturnValue);
nint[] taskId = new nint[1];
taskId[0] = UIApplication.SharedApplication.BeginBackgroundTask(() =>
{
FlutnetException error = new FlutnetException(FlutnetErrorCode.OperationCanceled);
MainThread.BeginInvokeOnMainThread(() => SendError(methodInfo, error));
UIApplication.SharedApplication.EndBackgroundTask(taskId[0]);
});
// Run the call in Background
Task.Run(() =>
{
BackgroundHandleMethodCall(methodInfo, call);
UIApplication.SharedApplication.EndBackgroundTask(taskId[0]);
});
}
private void HandleMethodCallTest(FlutterMethodCall call, FlutterResult callback)
{
if (call.Method == "FlutnetBridgeMode")
{
switch (Mode)
{
case FlutnetBridgeMode.PlatformChannel:
callback(NSObject.FromObject("PlatformChannel"));
break;
case FlutnetBridgeMode.WebSocket:
callback(NSObject.FromObject("WebSocket"));
break;
}
}
else
{
// Right now this handler is called just once at application startup
// when Flutter module tries to detect if it's running
// embedded into a native Xamarin app or as a standalone app
callback(NSObject.FromObject("ok"));
}
}
