Therefore, the collection defines a single pending intent template which can then be customized for each item in the view using a fill-in intent. It's a common behavior for a user to click on an item in a collection view, but it's not common for them to click on every single item in the collection. Typically, a pending intent is used to contain an action that a user is likely to take from an outside component. However, this behavior isn't allowed for collection views. Normally, when setting click events for remote views, you'd use a pending intent for each different view that you wanted to click on. When registering this component in the manifest, be sure to give this service the "_REMOTEVIEWS" permission so that it can bind to your collection view in order to supply the returned view factory. Also, because this is a type of service, you must register this service in the manifest in order for it to be started. There is only one required method override, onGetViewFactory(), and all you need to do in this method is return a RemoteViewsFactory. The RemoteViewsService is a type of service that is used specifically to generate a RemoteViewsFactory and connect it to a collection widget. All adapter functionality would take place in this class. This interface has methods that are very similar to adapters such as getCount() to return the number of items in the collection, and getViewAt() which is similar to getView() in an adapter, just with remote views instead of a regular view. Collection Widget Components RemoteViewsFactoryĪ RemoteViewsFactory is a special type of adapter-like class used to populate an AdapterView inside of a collection widget.
On top of the elements needed for a regular information or control widget, we need a few extra components to show our collection. Creating a collection widget is very similar to creating any other widget, with a few additions of course. Public class DataProvider implements RemoteViewsService.Collection widgets are used to show a list, grid, or stack of data. Import static android.R.layout.simple_list_item_1 To help keep your hybrid widgets lightweight, it’s recommended that you identify your widget’s primary category, develop it according to that category, and then add a few elements from the widget’s secondary category.Ĭode Copy Text import If you do decide to mix and match, then don’t get carried away! Widgets tend to deliver the best user experience when they provide easy access to a small amount of timely, relevant information or a few commonly-used features. For example, if you’re developing a control widget for a music application then you can provide Play, Pause and Skip controls, but you may also decide to display some information, such as the song’s title and artist. Sometimes you may be able to deliver a better user experience by combining elements from multiple categories. Apps that play media, such as podcasts or music, often have control widgets that allow the user to trigger Play, Pause, and Skip actions directly from their homescreen. These widgets act as a remote control that enables users to interact with your application, without having to bring it to the foreground. Collection widgets are usually backed by a data source, such as a database or an Array. This is a scrollable widget that displays a set of related data, formatted as a ListView, GridView, StackView, or an AdapterViewFlipper.
This is a non-scrollable widget that displays some information, such as today’s weather forecast or the date and time.
#ANDROID STUDIO LISTVIEW WIDGET FOR ANDROID#
Widgets for Android can provide a range of content, but generally fall into one of the following categories:
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