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#SIMPLE ANDROID APP SAMPLE HELLO WORLD DOWNLOAD HOW TO#
#SIMPLE ANDROID APP SAMPLE HELLO WORLD DOWNLOAD UPDATE#
#SIMPLE ANDROID APP SAMPLE HELLO WORLD DOWNLOAD MANUAL#

I hope I showed you the simplest way to create a very basic app widget. That’s all there is to it, we now have met our requirements to create a very simple Android App Widget! From here on out you can take more steps to configure the widget to your needs. On the OnReceive-method from the Widget we’ll need to check if this was the actual Indent we just clicked. We’ll need to define a static Tag and add that to the Indent. If (AnnouncementClick.Equals(intent.Action))Īs you can see, this step is a little bit more complex. Check if the click is from the "Announcement" button Public override void OnReceive(Context context, Intent intent) Return PendingIntent.GetBroadcast(context, 0, intent, 0) Private PendingIntent GetPendingSelfIntent(Context context, string action) GetPendingSelfIntent(context, AnnouncementClick)) WidgetView.SetOnClickPendingIntent(Resource.Id.widgetAnnouncementIcon, Private static string AnnouncementClick = "AnnouncementClickTag""" To take this one step further is being able to click on a button in the widget and act on that, for example: open up another app.

#SIMPLE ANDROID APP SAMPLE HELLO WORLD DOWNLOAD UPDATE#

Now each time the background gets clicked, the OnUpdate-method gets called again which results in an update of the Layout. WidgetView.SetOnClickPendingIntent(Resource.Id.widgetBackground, piBackground) Var piBackground = PendingIntent.GetBroadcast(context, 0, intent, PendingIntentFlags.UpdateCurrent) Register click event for the Background Intent.PutExtra(AppWidgetManager.ExtraAppwidgetIds, appWidgetIds) Intent.SetAction(AppWidgetManager.ActionAppwidgetUpdate) Var intent = new Intent(context, typeof(AppWidget)) Private void RegisterClicks(Context context, int appWidgetIds, RemoteViews widgetView) We’ll need to bind this to the background from the layout. We’ll need to use an Intent to get that to work with a specific action.

#SIMPLE ANDROID APP SAMPLE HELLO WORLD DOWNLOAD MANUAL#

Now we’ll need to register the manual clicks on the widget. At this point, we already have a very basic version of a app widget that we can use and change text on! But let’s take it one step further and add some click-events. The second one is more dynamic and is being updated to the last updated time of the widget (manually by click or automatically by the updatePeriodMillis.

", DateTime.Now)) Īs you can see, the first text is just static. Simply create a class in your solution (in my example: AppWidget.cs) which has the following content: Luckily, since we’re using Xamarin, this can be done for our using the correct attributes above our classes. When developing for (native) Android, we would have to add stuff to our Manifest to tell Android there is an App Widget available. Now that we have our metadata defined, let’s dive into the next step to add more functionality to make it work. I just set my value lower, since the user can overrule this value manually by clicking on the widget and forcing it to refresh. Sadly you can’t set this to a value that’s too low, otherwise the widget will drain too much battery.

updatePeriodMillis : This is how often Android should update the widget.

previewImage : This is the image that you’ll see when selecting the widget in the widget overview (in my example, the Xamarin logo).

initialLayout : The layout location for the widget that we defined in our previous step.

This is a crucial part of turning it into an widget, so let’s briefly go over the most important attributes: In this example, I’ve added an appwidgetprovider.xml to the /Resources/XML/ folder. To create this metadata, simply create an XML file with the appwidget-provider-element. As defined in the documentation: The AppWidgetProviderInfo defines the essential qualities of an App Widget, such as its minimum layout dimensions, its initial layout resource, how often to update the App Widget, and (optionally) a configuration Activity to launch at create-time. The first step into turning this into an actual app widget, is to add the appwidget-provider-metadata. Now that we have our layout, let’s continue in turning it into an widget. It simply is an LinearLayout containing the background, which it it place contains the icon and two TextViews. Here we’ll define the layout – I’ve stripped away any not important parts for now. So to do this, simply create an AXML file in your /Layouts/ folder of your solution (in my example it’s called Widget.xaml). You can add this on a later stage as well, I just find it easier to explain if we start with the layout.

The layoutĪssuming you already have your whole app solution up and running, let’s add a layout which will represent the app widget.

#SIMPLE ANDROID APP SAMPLE HELLO WORLD DOWNLOAD HOW TO#

As you can see, it’s a pretty simple example but it just shows you the first steps on how to create an App Widget.