Using ViewFlipper in a widget with Xamarin

Question

I am building a widget that has several pages of information. Only one page will be displayed at a time, and when a user taps on the widget, the next page will be displayed. I would like to create this functionality by using a ViewFlipper, however I can not find any documentation on how to implement it for a widget.

Here is skeleton code I am using while trying to get the ViewFlipper to work.

I have widget (DivisionStandings ) that has the content inserted into the layout (mainLayout) with a service (UpdateService).

When running the widget, I initially see the text for header1 set to "Updated Header" as intended. Touching the widget however does nothing.

[BroadcastReceiver (Label = "aaWdiget")]
[IntentFilter (new string [] { "android.appwidget.action.APPWIDGET_UPDATE" })]
[MetaData ("android.appwidget.provider", Resource = "@xml/divisionstandings")]
public class DivisionStandings : AppWidgetProvider
{
    public override void OnUpdate (Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
    {
    context.StartService (new Intent (context, typeof (UpdateService)));
    }
}


[Service]
public class UpdateService : Service
{
    public override void OnStart (Intent intent, int startId)
    {
        RemoteViews mainView= new RemoteViews (this.PackageName, Resource.Layout.mainLayout);;
        ComponentName thisWidget = new ComponentName (this,  "mlbstandings.DivisionStandings");
        AppWidgetManager manager = AppWidgetManager.GetInstance (this);

       mainView.SetTextViewText(Resource.Id.header1, "Updated Header");

        ViewFlipper flipper = (ViewFlipper)Resource.Id.viewFlipper1;
        flipper.Touch += (object sender, View.TouchEventArgs e) => { 
            flipper.ShowNext(); 
        };

        manager.UpdateAppWidget (thisWidget, mainView);
    }


<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mainLayout" >
    <ViewFlipper
        android:id="@+id/viewFlipper1">
        <TextView
            android:id="@+id/header1"
            android:text="---Header" />
        <TextView
            android:id="@+id/header2"
            android:text="Other Header" />       
    </ViewFlipper>
</LinearLayout>

score 2 · Answer 1 · edited May 23 '17 at 12:15

2

Problem probably is in ViewFlipper flipper = (ViewFlipper)Resource.Id.viewFlipper1; 'Resource.Id.viewFlipper1' is int not ViewFlipper

~~So you need to get you view by id like that:~~

ViewFlipper flipper = mainView.FindViewById<ViewFlipper> (Resource.Id.viewFlipper1)

Update since it looks like there is no method to access directly to views you need to use mainView.SetOnClickPendingIntent and than do yor action in OnRecive() method.

Here is some more information in Java

edited May 23 '17 at 12:15

Community

1
1

answered Jul 22 '14 at 13:02

ad1Dima

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FindViewById is not available to the Service class. – Mason240 Jul 22 '14 at 18:29
@Mason240 it must be available for View class. So I call it from mainView. Or it's not View? – ad1Dima Jul 23 '14 at 03:32
@ad1Dima - since this is a Widget, it's a RemoteViews, which does not have a `findViewById()` – Bryan Herbst Jul 23 '14 at 21:29
1

@Mason240 you're right. So I updated my answer with some new information. – ad1Dima Jul 24 '14 at 04:49

Using ViewFlipper in a widget with Xamarin

1 Answers1