Merge branch 'WJC' into wxr7

wxr

2021-08-28 ea8f01fd99a2ef85bf96623c1bf90e84128cbe5c

 HDL_ON/UI/UI2/4-PersonalCenter/AddFunction/AddDevciePage.cs

@@ -70,7 +70,14 @@
                }
                finally
                {
                    Application.RunOnMainThread(() => { waitPage.Hide(); });
                    Application.RunOnMainThread(() =>
                    {
                        if (waitPage != null)
                        {
                            waitPage.RemoveFromParent();
                            waitPage = null;
                        }
                    });
                }
            })
            { IsBackground = true }.Start();