In my project, I need to create a list of feeds, something like:
I think to create a XAML content view, but how can use it as a cell?
Is it a good approach?
I think the best way to go is to choose Data Template Selector. If you use Data Template Selector, You can Choose a DataTemplate (view) at runtime based on the value of a data-bound property. Lets say, In your case, your List view might have 3/4 or any number of different kind of ViewCell. Based on the type of cell you want to display different view cell.
There is a nice tutorial on Xamarin doc, you can read at https://learn.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/templates/data-templates/selector
Read this one after that (this is a example for Chat App using ViewCell) https://blog.xamarin.com/customizing-list-view-cells-xamarin-forms-datatemplateselector/
Let me know if you need any specific help after reading that.
Related
I have two autocompleteinputs but i want them to use same listview to look nicer. The app i am developing looks like lyft in lyft they use two text inputs in destination selection screen. How i can create autocompleteinput with custom list view?
I have readed the react-native-google-places-autocomplete documents. But didn't manage to find good solution.
What is the best practice in MVC (for testing, SOC and scaffolding) for setting texts (for exemple page title, h1,h2..)
Is it better to do it in the controlle, fill a viewmodel and send it to the view
or directly typing texts in the view?
Also I will propably use ressouces files for global texts (like button text, menu texts) and local ressouces for view specific texts.
The view is merely to present the output to the user. Depending on your requirement you can either:
1) Type the text in the view directly <h2>Hello World</h2> (for static content that will not change)
The latter two options are for ideal for dynamic content, where the content could be received from a database or some additional input.
2) Use the ViewBag to pass information to the view (in which case you would set it in the controller ie. ViewBag.HelloWorld = "Hello World" : <h2>#ViewBag.HelloWorld</h2>
3) Use a model to pass the information to your view. This should be your preferred option where possible. In your specific case you could use the controller to retrieve the content from your global resources, bind it to the model and pass it to the view.
The logic on where to get the data should come from the controller and the View's function should be to merely display it.
I recommend binding properties on the viewModel to the UI.
This is not only more testable, but it's also more flexible. It makes it easier to implement features like mult language support etc.
I recommend avoiding hard coding text in the markup if you can
I'm currently developing a Windows 8 Store app that uses a Grouped GridView in the HubPage showing Highlights for some Categories. So far, when clicking the Header you see More Highlights for this Category.
Now i want to add a control at the end of every Group leading the User to the "non-highlight" Category site, where just all the Items of this category are displayed.
Is there an easy and elegant way to do this - propably with a Template is suppose.
( i think the latest Bing-News-App has a similar feature )
Thanks in advance for every help.
There are a couple of ways you can do this.
You can add an arbitrary object to the end of your group, then use a DataTemplateSelector to style it.
You can create your own VariableSizedWrapGrid with the control added to the end in the constructor (slash "Arrange"). You can then add an arbitrary click handler as a dependency property and only show the button if the click handler is set, so you can reuse this on other pages, etc.
You can change the GroupStyle to include something similar at the end of the group, but it likely won't animate with the other items in the group (if that's important to you).
The easiest one to do is probably the first one. If your group is a list of SampleItems then make a subclass of the SampleItem class called something similar to TerminalSampleItem. Create a template for it (like you've made other data templates). Make an ItemTemplateSelector that has two properties, NonTerminalDataTemplate and TerminalDataTemplate (assuming you only have two data templates). Have the SelectTemplateOverride function check for (item is TerminalSampleItem);
I am trying to create a tabbed property view as per given article : The Eclipse Tabbed Properties View
As per article, org.eclipse.ui.views.properties.tabbed.propertyTabs extension point can be used to add new tabs.
<extension point="org.eclipse.ui.views.properties.tabbed.propertyTabs">
<propertyTabs contributorId="mview.views.SampleView">
<propertyTab
category="sample"
id="mview.ButtonTab"
label="Button"/>
<propertyTab
afterTab="mview.ButtonTab"
category="sample"
id="mview.AdvancedTab"
label="Advanced"/>
</propertyTabs>
</extension>
However in my case the tabs of property view vary depending on the item selected in view. So I have to add the tabs dynamically into extension depening on the item selected.
Please suggest how to do so.
Update:
One of the way to do so (I am not sure if its adviced) is using IExtensionRegistry.addContribution() method. Here I provided an inputstream object containing desired extension details. This added tabs to property view at run time. However with change in selection of item in list viewer, the property view is not updated. Please suggest if this is the right approach to do so.
Ok, I got the solution Its a two step process. Using this one can dyanamically add tabs (and their sections):
Step 1: Associate a tab descriptor provider with the view.
Add an extension point - org.eclipse.ui.views.properties.tabbed.propertyContributor to the view (if not already added). In the propertyContributor section, add a class for tabDescriptorProvider item. This class will implement ITabDescriptorProvider interface.
Step 2: Provide Tabs and Sections:
TabDescriptor provider will return array of TabDescriptors when its getTabDescriptor() method is called. Each TabDescriptor return a list of SectionDecriptors and each SectionDescriptor is linked to a Section. Finally it is the Section class that contains widgets to be displayed on screen. Each widget in Section class has a modify listner which updates the properties of selected items.
While the answer from Viral may not match the specific needs of the OP, the provided answer is likely acceptable to many.
If a tab does not have any sections to display, the default TabbedPropertySheetPage will not show that tab. Thus, if the problem domain is specified in terms of IFilter implementing classes, "dynamic" tabs may be achieved.
Tabs will be added or be removed as the selection changes depending upon whether any sections are present. A visible tab may have one or more sections present on it, and the number of sections on a visible tab may change from selection to selection.
As I came across this page with the same basic issue, I was a bit disappointed that I would need to intervene in the way the OP suggested. After some experimentation, I was able to achieve what I needed purely through the IFilter approach as suggested by Viral.
A tutorial is provided at http://www.eclipse.org/articles/Article-Tabbed-Properties/tabbed_properties_view.html
You need to define a new YourPropertySection derived fromAbstract PropertySection . Also define a filter derived from IFilter and override the select method to return true only for the desired type of selection. Then in plugin.xml write an extension point which would map your PropertySection to the required PropertyTab and will also associate your filter. So this section & tab will only show when your filter returns true.
I'm looking for a solution for a problem...
I need a Sharepoint Field wich contains multiple link, stored in a simple way (like ';' separation).
Does anybody know if there are project 'bout custom field with multiple link and Asset picker to choose the link?
I'd like to use the Asset Picker to choose a single link, and then catch the result and append it to my custom field value.. I googled a lot looking for "how" call the asset picker from code... I hope is something like a simple dialog, but i cannot understand how to do it!
Thanks for any suggestion (about projects similar to this or how to use the asset picker)!!