Task.Run（）有什么区别，在Xamarin表单上调用异步void AAA（）？

Question

As far as I know, there are three ways to call async method. (I'm sure there are much more)

• 1> Task.Run(async () = {...}).
• 2> Just calling AAA();

and AAA should be looks like

async void AAA()
{
...
}

• 3> Device.InvokeMainThread(async () => {...});

I know If I use option 1( Task.run ) process will go on background thread and option 3 is not.

What about option 2? It's on main thread if I called from OnAppearing() ?
First of all, Is there not any problem to use like that?

And option2 and 3 are same?

Answer 1

1. Executes AAA on a thread pool thread.
2. Executes AAA on the calling thread.
3. Executes AAA on the main thread.

As an aside, you should avoid async void methods .