[mono-android] TabView not responding as it should

[Tomasz Cielecki]

Also how does your main_original layout look. Does it have a TabHost
and a TabView?

On Mon, Feb 27, 2012 at 1:20 PM, Tomasz Cielecki <tomasz at ostebaronen.dk> wrote:
> It is because they Views were not destroyed. So OnCreate is not called
> again. Take a look at the Activity life cycle:
> http://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle
>
> This will explain it to you.
>
> On Fri, Feb 24, 2012 at 1:59 AM, Paul Johnson
> <paul at all-the-johnsons.co.uk> wrote:
>> Hi,
>>
>> I have a tabview app in development which on the face of it looks to work,
>> but it isn't.
>>
>> The event for changing the tab works, but the new view isn't showing. If I
>> click on another tab, that fires. If I go back to the first tab, nothing
>> fires. The code below explains it...
>>
>> [Activity]
>>    public class HomeTab : Activity
>>    {
>>        protected override void OnCreate(Bundle savedInstanceState)
>>        {
>>            base.OnCreate(savedInstanceState);
>>            Console.WriteLine("in home");
>>            SetContentView(Resource.Layout.main_original);
>>        }
>>    }
>>    [Activity]
>>    public class CalendarTab : Activity
>>    {
>>        protected override void OnCreate(Bundle savedInstanceState)
>>        {
>>            base.OnCreate(savedInstanceState);
>>            Console.WriteLine("in calendar");
>>            SetContentView(Resource.Layout.five_buttons);
>>        }
>>    }
>> //
>>   [Activity(Label = "OQHRA", MainLauncher = true,
>> Theme="@android:style/Theme.NoTitleBar", Icon = "@drawable/icon")]
>>    public class Activity1 : TabActivity
>>    {
>>        public int screenNo = -1; // quick hack
>>        protected override void OnCreate(Bundle bundle)
>>        {
>>            base.OnCreate(bundle);
>>            SetContentView(Resource.Layout.main_original);
>>            ListView listView = FindViewById<ListView>(Resource.Id.listView);
>>            string[] falco =
>> Resources.GetStringArray(Resource.Array.frontpage);
>>            listView.Adapter = new ArrayAdapter<string>(this,
>> Resource.Layout.listview_layout, falco);
>>            listView.ItemClick +=new
>> EventHandler<ItemEventArgs>(listView_ItemClick);
>>            ImageView image = FindViewById<ImageView>(Resource.Id.imgBack);
>>            image.Focusable = true;
>>            image.Clickable = true;
>>            image.Click += image_Click;
>>            TabHost.TabSpec spec;
>>            Intent intent;
>>            intent = new Intent(this, typeof(HomeTab));
>>            intent.AddFlags(ActivityFlags.NewTask);
>>            spec = TabHost.NewTabSpec("tabHome");
>>            spec.SetIndicator("Home",
>> Resources.GetDrawable(Resource.Drawable.ic_tabs_home));
>>            spec.SetContent(intent);
>>            TabHost.AddTab(spec);
>>            intent = new Intent(this, typeof(CalendarTab));
>>            intent.AddFlags(ActivityFlags.NewTask);
>>            spec = TabHost.NewTabSpec("tabCalendar");
>>            spec.SetIndicator("Calendar",
>> Resources.GetDrawable(Resource.Drawable.ic_tabs_cal));
>>            spec.SetContent(intent);
>>            TabHost.AddTab(spec);
>>            intent = new Intent(this, typeof(RaceTab));
>>            intent.AddFlags(ActivityFlags.NewTask);
>>            spec = TabHost.NewTabSpec("tabRaceInfo");
>>            spec.SetIndicator("Race Info",
>> Resources.GetDrawable(Resource.Drawable.ic_tabs_race));
>>            spec.SetContent(intent);
>>            TabHost.AddTab(spec);
>>            intent = new Intent(this, typeof(NewsTab));
>>            intent.AddFlags(ActivityFlags.NewTask);
>>            spec = TabHost.NewTabSpec("tabNews");
>>            spec.SetIndicator("News",
>> Resources.GetDrawable(Resource.Drawable.ic_tabs_news));
>>            spec.SetContent(intent);
>>            TabHost.AddTab(spec);
>>            TabHost.CurrentTab = 0;
>>        }
>>
>> When you click a tab, it puts in the console which tab has been pressed - if
>> I click on the first tab, home is printed, second gives calendar and so on.
>> Go to any tab and back to home, nothing is printed.
>>
>> Any ideas why the contentview isn't showing or why the event only fires
>> once?
>>
>> Thanks
>>
>> Paul
>>
>>
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>
>
>
> --
> Med Venlig Hilsen / With Best Regards
> Tomasz Cielecki
> http://ostebaronen.dk



-- 
Med Venlig Hilsen / With Best Regards
Tomasz Cielecki
http://ostebaronen.dk