CustomCommand.cs

namespace Mobile.Commands
{
    public class CustomCommand<T> : ICommand
    {
        private Action _action;
        private Action<object> _newAction;
        private string _activityName;
        private bool _canExecute;
        private readonly Func<T, Task> _executeTask;

        public event EventHandler CanExecuteChanged;

        public CustomCommand(string activityName, Func<T, Task> executeTask)
        {
            _executeTask = executeTask;
            _activityName = activityName;
            _canExecute = true;
        }

        public bool CanExecute(object parameter)
        {
            return _canExecute;
        }

        public void Execute(object parameter)
        {
            Analytics.TrackEvent($"Perforced action : {_activityName}");
            _executeTask.Invoke((T)parameter);
        }
    }

    public class CustomCommand : ICommand
    {
        private Action _action;
        private Action<object> _newAction;
        private string _activityName;
        private bool _canExecute;

        public event EventHandler CanExecuteChanged;

        public CustomCommand(string activityName, Action action)
        {
            _activityName = activityName;
            _action = action;
            _canExecute = true;
        }

        public CustomCommand(string activityName, Action<object> action)
        {
            _activityName = activityName;
            _newAction = action;
            _canExecute = true;
        }

        public bool CanExecute(object parameter)
        {
            return _canExecute;
        }

        public void Execute(object parameter)
        {
            Analytics.TrackEvent($"Perforced action : {_activityName}");
            _action();
        }
    }
}