I have used an very easy solution for this problem.
Whenever I need to do some output to the console (hint: you should only do this for you own purpose, later on you should Logging with respective logging levels in you app!) I do it the following way:
In the "App" class i have created a new method called "WriteLine" and there I use a dependency service call to execute some native java code on the android device:
public static void WriteLine(String line)
{
DependencyService.Get().WriteLine(line);
}
If you need help for using the DependencyService please look into further tutorials on that!
In the Implementation of the interface IOutput you just need the following code:
public void WriteLine(string line)
{
Console.WriteLine(line);
}
Like this you use the java "Console" class and you get the output at least one time less.