Merge remote-tracking branch 'origin/newBranch1' into WJC

JLChen

2021-08-28 299f4b1218c0d3721aa92bf091950d6708942583

 HDL_ON/UI/UI2/4-PersonalCenter/AddDevice/SenesorEnvironment/AddSensorEnvironmentPage.cs

@@ -177,7 +177,14 @@
                        }
                        finally
                        {
                            Application.RunOnMainThread(() => { waitPage.Hide(); });
                            Application.RunOnMainThread(() =>
                            {
                                if (waitPage != null)
                                {
                                    waitPage.RemoveFromParent();
                                    waitPage = null;
                                }
                            });
                        }
                    })
                    { IsBackground = true }.Start();