Xamarin iOS - MVVMCross：无法使用ViewModel中的命令连接自定义单元格中的按钮

Question

I am using MVVMCross, for my Xamarin iOS project. I am using a button inside the cell. I want to connect it to viewModel through command, but for some reason, I am not able to successfully bind them.

Can someone please have a look and let me know where I am doing wrong or what updates should I make to my code.

View:

public partial class MyCell : MvxCollectionViewCell 
{
        public PostImageCell(IntPtr handle) : base(handle)
        {
            this.DelayBind(() =>
            {
                    var bSet = this.CreateBindingSet<MyCell, SomeViewModel>();
                    bSet.Bind(Btn).To(vm => vm.EditPhotoCommand);
                    bSet.Apply();
            });
        }
}

ViewModel:

public class SomeViewModel : BaseCoreViewModel
{
        public SomeViewModel()
        {
         editPhotoCommand = new BaseMvxCommand(DoShow);
        }

        public ICommand EditPhotoCommand { get { return editPhotoCommand; } }

        private void DoShow()
        { 
          //
        }
}

I kept some breakpoints and realized that when the MyCell constructor is being called, the code inside this.DelayBind() is not being hit, so i tried removing this.DelayBind but still no use. Whenever I click on the button inside the cell, its not binding to the command inside ViewModel

Answer 1

Probably do something like below in your ViewModel and then bind as bSet.Bind(Btn).To(vm => vm.ClickCommand); I have your button is properly set on the view. I have a sample working right now with button on tableviewcell.

    private MvxCommand _clickCommand;
    public ICommand ClickCommand
    {
        get
        {
            _clickCommand = _clickCommand ?? new MvxCommand(Hit);
            return _clickCommand;
        }
    }

    private void Hit()
    {
        System.Diagnostics.Debug.WriteLine("Tapped Click Me");
        //System. .WriteLine ("Tapped Click Me");
    }