Intersoft Community - Crosslight - How to Pull-to-Refresh?

How to Pull-to-Refresh?

Arief — Thu, 18 Jun 2015 01:44:26 GMT

Hi Zhou Wanghua

I think your MachineTimeViewModel view model is already right.

That error caused because you are not yet created activity (Android) or view controller (iOS), you must link your view model to your activity (android) or view controllor (iOS) here is the example:

If you not yet define your view model there, that error can be happened.

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Wed, 17 Jun 2015 09:23:41 GMT

When I am through “ this.NavigationService.Navigate<MachineTimeViewModel>();”The navigation view ，not find "MachineTimeViewModel"。"DataListViewModelBase" Can be achieved by "this.NavigationService.Navigate<>"navigation ?

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Wed, 17 Jun 2015 09:20:47 GMT

namespace MyInventory.ViewModels{
    public class MachineTimeViewModel: DataListViewModelBase<Item, IItemRepository>
    {
        private ItemQueryDefinition _queryDefinition = null;

        public MachineTimeViewModel()
        {
            // configure data behaviors
            this.EnableRefresh = true;
            this.EnableIncrementalRefresh = true;
            this.EnableIncrementalLoading = true;
            this.EnableAsyncFilter = true;
            this.IncrementalLoadingSize = 20;

            // commands
            this.LoadIncrementalCommand = new DelegateCommand(ExecuteLoadIncrementalCommand,
                                                           CanExecuteLoadIncrementalCommand);
        }

        public DelegateCommand LoadIncrementalCommand
        {
            get;
            set;
        }

        public override string TitleText
        {
            get
            {
                if (this.Items != null)
                    return "Inventories (" + this.Items.Count() + ")";
                return "Inventories";
            }
        }

        protected override IQueryDefinition ViewQuery
        {
            get
            {
                if (_queryDefinition == null)
                    _queryDefinition = new ItemQueryDefinition();
                return _queryDefinition;
            }
        }

        private bool CanExecuteLoadIncrementalCommand(object paramater)
        {
            return this.EnableIncrementalLoading;
        }

        private void ExecuteLoadIncrementalCommand(object parameter)
        {
            LoadDataIncremental();
        }
    }
}

How to Pull-to-Refresh?

Arief — Wed, 17 Jun 2015 01:55:04 GMT

Hi Zhou Wanghua

your constructor is wrong it should be: public MachineTimeViewModel(){}

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Tue, 16 Jun 2015 16:11:32 GMT

namespace MyInventory.ViewModels{
    public class MachineTimeViewModel: DataListViewModelBase<Item, IItemRepository>
    {
        private ItemQueryDefinition _queryDefinition = null;

        public ItemListViewModel()
        {
            // configure data behaviors
            this.EnableRefresh = true;
            this.EnableIncrementalRefresh = true;
            this.EnableIncrementalLoading = true;
            this.EnableAsyncFilter = true;
            this.IncrementalLoadingSize = 20;

            // commands
            this.LoadIncrementalCommand = new DelegateCommand(ExecuteLoadIncrementalCommand,
                                                           CanExecuteLoadIncrementalCommand);
        }

        public DelegateCommand LoadIncrementalCommand
        {
            get;
            set;
        }

        public override string TitleText
        {
            get
            {
                if (this.Items != null)
                    return "Inventories (" + this.Items.Count() + ")";
                return "Inventories";
            }
        }

        protected override IQueryDefinition ViewQuery
        {
            get
            {
                if (_queryDefinition == null)
                    _queryDefinition = new ItemQueryDefinition();
                return _queryDefinition;
            }
        }

        private bool CanExecuteLoadIncrementalCommand(object paramater)
        {
            return this.EnableIncrementalLoading;
        }

        private void ExecuteLoadIncrementalCommand(object parameter)
        {
            LoadDataIncremental();
        }
    }
}

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Tue, 16 Jun 2015 16:09:44 GMT

When I am through “ this.NavigationService.Navigate<MachineTimeViewModel>();”The navigation view ，not find "MachineTimeViewModel"

In the following error As shown in figure

How to Pull-to-Refresh?

Arief — Tue, 16 Jun 2015 09:05:52 GMT

Hi Zhou Wanghua,

What Platform did you use? iOS/Android/WinPhone

did you already use this code in your binding provider? your binding provider lack this code:
this.AddBinding("TableView", BindableProperties.RefreshCommandProperty, "RefreshCommand");

Can you show me the screenshot/error log of the error?

Here is our working samples: http://git.intersoftpt.com/projects/CROS/repos/samples/browse/MyInventory_WebApi

Also sorry i give your wrong link, here is the how to link: http://developer.intersoftpt.com/display/crosslight/Enabling+Pull+to+Refresh

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Mon, 15 Jun 2015 15:29:54 GMT

Binding times wrong data 。

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Mon, 15 Jun 2015 15:28:32 GMT

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Mon, 15 Jun 2015 15:23:00 GMT

This is my project ，To regenerate the there is a problem 。I want to achieve, drag load data ，To an unknown error 。I use “DataListViewModelBase”implementation 。Can you give me one Run the example 。Thank you very much 。I have been learning for a long time Hasn't been made 。

How to Pull-to-Refresh?

zhouwanghua@zwotechnology.com — Sun, 14 Jun 2015 17:53:06 GMT

Pull-to-Refresh Always an error ,

Would please advise . thanks.