20210103:增加安卓后退按键

wei

2021-01-04 5c25f9546d0954befb202910540a5ac59af1adfe

 HDL-ON_Android/Application.cs

@@ -59,6 +59,31 @@
            BaseActivity.KeepScreenON = false;
            //隐藏迪拜虚拟按键
            BaseActivity.IsHideVirualButtons = true;
            //实现安卓返回按键
            BaseActivity.BackKeyAction = () => {
                MainPage.Log($"android后退");
                try
                {
                    var result = MainPage.LoadEvent_BackAction();
                    switch (result)
                    {
                        case 0:
                            break;
                        case 1:
                        case 2:
                            BaseActivity.VerifyDateTime = DateTime.MaxValue;
                            break;
                        default:
                            BaseActivity.VerifyDateTime = DateTime.MaxValue;
                            break;
                    }
                }
                catch (System.Exception ezx)
                {
                    Console.WriteLine(ezx.Message);
                }
            };

            init();
            BaseActivity.OnCreateActoin += (activity, application) =>
            {