单击按钮时屏幕冻结（Xamarin.forms）

Question

I'm trying to make a page where when I click on a button, it retrieves data and shows an activity indicator while it waits.

But when click on the button, it freezes. I binded the isVisible Property of the button and set him to false when clicked. When it's done, it sets the isVisible to true, but the screen still freezes.

And then i try with this code

Device.BeginInvokeOnMainThread (() => {
  VidljivoDugmePretrazi = false;
});

But didnt work, and the same situation on login page and work. Can someone help me, or have someone experience with this situation? Thank you.

Answer 1

You need to call your asynchronous method from the main thread and then update your isVisible Property in your viewmodel.

Device.BeginInvokeOnMainThread(YourAsyncMethod);
private async void YourAsyncMethod()
{
    //...
    VidljivoDugmePretrazi = true;
    try
    {
      await GetDataAsync();
    }
    catch (Exception e) 
    {
      //...
    }
    finally
    {
       VidljivoDugmePretrazi = false;
    }
}