private void ScrollRefresh()
{
var refreshView = new PullToRefreshLayout
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = MainScroll,
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding <ScrollModel>(PullToRefreshLayout.IsRefreshingProperty, vm => vm.IsBusy, BindingMode.OneWay);
refreshView.SetBinding <ScrollModel>(PullToRefreshLayout.RefreshCommandProperty, vm => vm.RefreshCommand);
TabGrid.Children.Add(refreshView, 0, 3);
refreshView.RefreshCommand = new Command(() =>
{
refreshView.IsRefreshing = false;
LoadingInitAsync();
});
}
public ListViewPage(bool insideLayout)
{
Title = "ListView (Pull to Refresh)";
BindingContext = new TestViewModel(this);
var listView = new ListView();
//ListView now has a built in pull to refresh!
//You most likely could enable the listview pull to refresh and use it instead of the refresh view
//listView.IsPullToRefreshEnabled = true;
//
//listView.SetBinding<TestViewModel>(ListView.IsRefreshingProperty, vm => vm.IsBusy, BindingMode.OneWay);
//listView.SetBinding<TestViewModel>(ListView.RefreshCommandProperty, vm => vm.RefreshCommand);
listView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, new Binding("Items"));
//ListView now has a built in pull to refresh!
//You most likely could disable the listview pull to refresh and re-enable this
//However, I wouldn't recommend that.
var refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = new StackLayout
{
Spacing = 0,
Children =
{
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
VerticalTextAlignment = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
listView
}
},
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding(PullToRefreshLayout.IsRefreshingProperty, , new Binding("IsBusy", BindingMode.OneWay));
refreshView.SetBinding(PullToRefreshLayout.RefreshCommandProperty, new Binding("RefreshCommand"));
if (insideLayout)
{
Content = new StackLayout
{
Spacing = 0,
Children =
{
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
VerticalTextAlignment = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
refreshView
}
};
}
else
{
Content = refreshView;
}
}
public ScrollViewPage(bool insideLayout)
{
var random = new Random();
Title = "ScrollView (Pull to Refresh)";
BindingContext = new TestViewModel(this);
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
RowSpacing = 0,
ColumnSpacing = 0
};
var scrollView = new ScrollView
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = grid
};
for (int i = 0; i < 20; i++)
{
grid.ColumnDefinitions.Add(new ColumnDefinition {
Width = GridLength.Auto
});
for (int j = 0; j < 20; j++)
{
if (i == 0)
{
grid.RowDefinitions.Add(new RowDefinition {
Height = GridLength.Auto
});
}
grid.Children.Add(new BoxView
{
HeightRequest = 50,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.FromRgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255))
}, i, j);
}
}
var refreshView = new PullToRefreshLayout
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = scrollView,
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding(PullToRefreshLayout.IsRefreshingProperty, new Binding("IsBusy", BindingMode.OneWay));
refreshView.SetBinding(PullToRefreshLayout.RefreshCommandProperty, new Binding("RefreshCommand"));
if (insideLayout)
{
Content = new StackLayout
{
Spacing = 0,
Children =
{
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
VerticalTextAlignment = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
refreshView
}
};
}
else
{
Content = refreshView;
}
}
public ListViewPage(bool insideLayout)
{
Title = "ListView (Pull to Refresh)";
BindingContext = new TestViewModel (this);
var listView = new ListView ();
//ListView now has a built in pull to refresh!
//You most likely could enable the listview pull to refresh and use it instead of the refresh view
//listView.IsPullToRefreshEnabled = true;
//
//listView.SetBinding<TestViewModel>(ListView.IsRefreshingProperty, vm => vm.IsBusy, BindingMode.OneWay);
//listView.SetBinding<TestViewModel>(ListView.RefreshCommandProperty, vm => vm.RefreshCommand);
listView.SetBinding<TestViewModel> (ItemsView<Cell>.ItemsSourceProperty, vm => vm.Items);
//ListView now has a built in pull to refresh!
//You most likely could disable the listview pull to refresh and re-enable this
//However, I wouldn't recommend that.
var refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = new StackLayout
{
Spacing = 0,
Children =
{
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize (NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
XAlign = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
listView
}
},
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding<TestViewModel> (PullToRefreshLayout.IsRefreshingProperty, vm => vm.IsBusy);
refreshView.SetBinding<TestViewModel>(PullToRefreshLayout.RefreshCommandProperty, vm => vm.RefreshCommand);
if (insideLayout)
{
Content = new StackLayout
{
Spacing = 0,
Children =
{
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize (NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
XAlign = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
refreshView
}
};
}
else
{
Content = refreshView;
}
}
public StackLayoutPage(bool insideLayout)
{
var random = new Random();
Title = "StackLayout (Pull to Refresh)";
BindingContext = new TestViewModel(this);
var stack = new StackLayout
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Spacing = 0
};
for (int i = 0; i < 20; i++)
{
stack.Children.Add(new BoxView
{
HeightRequest = 150,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.FromRgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255))
});
}
var refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = stack,
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding <TestViewModel> (PullToRefreshLayout.IsRefreshingProperty, vm => vm.IsBusy, BindingMode.OneWay);
refreshView.SetBinding <TestViewModel>(PullToRefreshLayout.RefreshCommandProperty, vm => vm.RefreshCommand);
if (insideLayout)
{
var activity = new ActivityIndicator();
activity.SetBinding(ActivityIndicator.IsRunningProperty, "IsBusy");
Content = new StackLayout
{
Spacing = 0,
Children =
{
activity,
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
XAlign = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
refreshView
}
};
}
else
{
Content = refreshView;
}
}
public StackLayout CreateScrollableFeedView(List <PostItemStackLayout> PostsContent, string placeholder, string scopeName, string groupid = null)
{
StackLayout stack = new StackLayout();
if (PostsContent != null && PostsContent.Count > 0)
{
Debug.WriteLine("Posts found");
feedPosts = Util.CreateFeed(PostsContent);
ScrollFeed = new ScrollView {
Content = feedPosts
};
refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = ScrollFeed,
RefreshColor = Color.FromHex("#3498db"),
IsPullToRefreshEnabled = true
};
refreshView.SetBinding(PullToRefreshLayout.IsRefreshingProperty, new Xamarin.Forms.Binding()
{
Path = "IsBusy", Mode = BindingMode.OneWay
});
refreshView.SetBinding(PullToRefreshLayout.RefreshCommandProperty, new Xamarin.Forms.Binding()
{
Path = "RefreshCommand"
});
stack = new StackLayout {
Orientation = StackOrientation.Vertical,
Children = { refreshView }
};
}
else
{
Label NoPostsLabel = new Label {
Text = "Be the first to start this secret file!",
TextColor = Color.Silver,
FontSize = Device.GetNamedSize(NamedSize.Medium, typeof(Label)),
VerticalOptions = LayoutOptions.Fill,
HorizontalOptions = LayoutOptions.Fill
};
refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
Content = NoPostsLabel,
RefreshColor = Color.FromHex("#3498db"),
IsPullToRefreshEnabled = true
};
stack = new StackLayout {
Orientation = StackOrientation.Vertical,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Children =
{
refreshView
}
};
}
return(UIBuilder.AddFloatingActionButtonToStackLayout(stack, "ic_add_white_24dp.png", new Command(async() => {
Navigation.PushAsync(new CreatePostPage(refreshHandler, "Add a Secret to " + this.Title, groupname, groupid));
}), Color.FromHex(Values.PURPLE), Color.FromHex(Values.GOOGLEBLUE)));
}
public ScrollViewPage(bool insideLayout)
{
var random = new Random();
Title = "ScrollView (Pull to Refresh)";
BindingContext = new TestViewModel (this);
var grid = new Grid
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
RowSpacing = 0,
ColumnSpacing = 0
};
var scrollView = new ScrollView
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = grid
};
for (int i = 0; i < 20; i++)
{
grid.ColumnDefinitions.Add(new ColumnDefinition{ Width = GridLength.Auto });
for (int j = 0; j < 20; j++)
{
if (i == 0)
{
grid.RowDefinitions.Add(new RowDefinition{ Height = GridLength.Auto });
}
grid.Children.Add(new BoxView
{
HeightRequest = 50,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.FromRgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255))
}, i, j);
}
}
var refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = scrollView,
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding<TestViewModel> (PullToRefreshLayout.IsRefreshingProperty, vm => vm.IsBusy, BindingMode.OneWay);
refreshView.SetBinding<TestViewModel>(PullToRefreshLayout.RefreshCommandProperty, vm => vm.RefreshCommand);
if (insideLayout)
{
Content = new StackLayout
{
Spacing = 0,
Children =
{
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize (NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
XAlign = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
refreshView
}
};
}
else
{
Content = refreshView;
}
}
public StackLayoutPage(bool insideLayout)
{
var random = new Random();
Title = "StackLayout (Pull to Refresh)";
BindingContext = new TestViewModel (this);
var stack = new StackLayout
{
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Spacing = 0
};
for (int i = 0; i < 20; i++)
{
stack.Children.Add(new BoxView
{
HeightRequest = 150,
HorizontalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.FromRgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255))
});
}
var refreshView = new PullToRefreshLayout {
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Content = stack,
RefreshColor = Color.FromHex("#3498db")
};
refreshView.SetBinding<TestViewModel> (PullToRefreshLayout.IsRefreshingProperty, vm => vm.IsBusy, BindingMode.OneWay);
refreshView.SetBinding<TestViewModel>(PullToRefreshLayout.RefreshCommandProperty, vm => vm.RefreshCommand);
if (insideLayout)
{
var activity = new ActivityIndicator();
activity.SetBinding(ActivityIndicator.IsRunningProperty, "IsBusy");
Content = new StackLayout
{
Spacing = 0,
Children =
{
activity,
new Label
{
TextColor = Color.White,
Text = "In a StackLayout",
FontSize = Device.GetNamedSize (NamedSize.Large, typeof(Label)),
BackgroundColor = Color.FromHex("#3498db"),
XAlign = TextAlignment.Center,
HorizontalOptions = LayoutOptions.FillAndExpand
},
refreshView
}
};
}
else
{
Content = refreshView;
}
}
