android.app.AlertDialog.Builder.create C# (CSharp) Метод

            public virtual global::android.app.AlertDialog create()
            {
                return global::MonoJavaBridge.JavaBridge.CallObjectMethod(this, global::android.app.AlertDialog.Builder.staticClass, "create", "()Landroid/app/AlertDialog;", ref global::android.app.AlertDialog.Builder._m0) as android.app.AlertDialog;
            }

        public static global::System.Windows.Forms.DialogResult Show(string text, string caption)
        {

            // or are we called on a background thread? 
            // for java, we can block a worker thread until ui is shown. for javascript cannot do it without async?
            // assume we are activity based..
            var context = ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext as Activity;
            var ui = context.getMainLooper() == Looper.myLooper();
            Console.WriteLine("enter MessageBox.Show " + new { ui });

            var value = default(global::System.Windows.Forms.DialogResult);
            var thread0 = Thread.CurrentThread;
            var sync = new AutoResetEvent(false);

            context.runOnUiThread(
                a =>
                {
                    //thread0 = Thread.CurrentThread;
                    //sync0ui.Set();

                    // X:\jsc.svn\examples\java\android\forms\FormsMessageBox\FormsMessageBox\Library\ApplicationControl.cs
                    // https://sites.google.com/a/jsc-solutions.net/backlog/knowledge-base/2014/201410/20141025
                    // X:\jsc.svn\examples\java\android\Test\TestAlertDialog\TestAlertDialog\ApplicationActivity.cs


                    var alertDialog = new AlertDialog.Builder(context);

                    alertDialog.setTitle(caption);

                    if (!string.IsNullOrEmpty(caption))
                    {
                        alertDialog.setMessage(text);
                    }

                    // https://sites.google.com/a/jsc-solutions.net/backlog/knowledge-base/2014/201410/20141026


                    alertDialog.setPositiveButton("OK",
                            new xDialogInterface_OnClickListener
                            {
                                yield = delegate
                                {
                                    Console.WriteLine(" alertDialog.setPositiveButton");
                                    value = global::System.Windows.Forms.DialogResult.OK;
                                    //sync.Set();
                                }
                            }
                        );

                    // skip icons?
                    //alertDialog.setIcon(android.R.drawable.star_off);
                    var dialog = alertDialog.create();

                    dialog.setOnDismissListener(
                        new xDialogInterface_OnDismissListener
                        {
                            yield = delegate
                            {
                                Console.WriteLine("  dialog.setOnDismissListener");
                                sync.Set();

                                if (ui)
                                    throw null;
                            }
                        }
                    );

                    dialog.show();


                    // http://stackoverflow.com/questions/13974661/runonuithread-vs-looper-getmainlooper-post-in-android
                    // http://developer.android.com/reference/android/os/Looper.html



                    //sync.Set();
                }
            );




            // need to poll? discard?


            if (ui)
            {
                try
                {
                    // loop until we throw null
                    // where is it thrown?
                    android.os.Looper.loop();
                }
                catch
                {
                }
            }
            else
            {
                sync.WaitOne();
            }

            Console.WriteLine("exit MessageBox.Show " + new { ui, value });
            return value;
        }