/// <summary>
/// Registers a method call handler on this channel.
/// </summary>
/// <param name="handler">A <see cref="MethodCallHandler"/>, or null to deregister.</param>
public void SetMethodCallHandler(MethodCallHandler handler)
{
async Task <byte[]> binaryHandler(byte[] bytes)
{
MethodCall call = Codec.DecodeMethodCall(bytes);
try
{
return(Codec.EncodeSuccessEnvelope(await handler(call)));
}
catch (FlutterException e)
{
return(Codec.EncodeErrorEnvelope(e.Code, e.Message, e.Details, e.StackTrace));
}
catch (MissingPluginException)
{
return(null);
}
catch (Exception e)
{
return(Codec.EncodeErrorEnvelope("error", e.Message, null, e.StackTrace));
}
}
BinaryMessenger.SetMessageHandler(Name, handler == null ? null : (BinaryMessageHandler)binaryHandler);
}
/// <summary>
/// Registers a method call handler on this channel.
/// </summary>
/// <param name="handler">An asynchronous callback function to handle the <see cref="MethodCall">.</param>
public void SetMethodCallHandler(Func <MethodCall, Task <object> > handler)
{
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
BinaryMessenger.SetMessageHandler(Name, async(byte[] bytes) =>
{
MethodCall call = Codec.DecodeMethodCall(bytes);
try
{
return(Codec.EncodeSuccessEnvelope(await handler(call)));
}
catch (FlutterException e)
{
return(Codec.EncodeErrorEnvelope(e.Code, e.Message, e.Details, e.StackTrace));
}
catch (MissingPluginException)
{
return(null);
}
catch (Exception e)
{
return(Codec.EncodeErrorEnvelope("error", e.Message, null, e.StackTrace));
}
});
}