On Feb 20, 2012, at 11:50 AM, Chris Tacke wrote:
> I've moved to something a bit simpler that, from initial tests anyways,
> appears to work. Does this seem reasonable though (I think it assumes that
> the UIInvoker class itself is created on the UI thread):
>
> public class UIInvoker : DisposableBase
> {
> private Activity m_activity = new Activity();
>
> public void Invoke(Delegate method)
> {
> m_activity.RunOnUiThread(delegate
> {
> method.DynamicInvoke(null);
> });
> }
I wouldn't suggest this solution, as this avoids a great deal of Activity
initialization; you have a "half-baked" Activity instance. (For those reading
along at home, Activity.attach() is never invoked; Activity.attach() is called
in android.app.ActivityThread, which requires that you go through the
Context.startActivity() infrastructure, which `new Activity()` obviously
doesn't.)
That said, it works...because Activity.runOnUiThread() doesn't use
Activity.mUiThread for anything except reference comparison, but I have no idea
how long that will be the case.
What I would instead suggest is:
public void Invoke(Delegate method)
{
using (var handler = new
Android.OS.Handler(Android.OS.Looper.MainLooper))
handler.Post(delegate {
method.DynamicInvoker(null);
});
}
- Jon
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