Re: [mono-android] Nothing being passed back from a webservice
At a guess, it's to do with timing.
You could be returning your list f from your function before the Async
network call has occurred.
To get around this, change your method from:
private List DoThis()
to:
private void DoThisAndCallMeBack(Action> callback)
And then modify the return statements to callback calls:
List f = new List();
if (checkForNetwork(true) != true)
{
f.Add("No network available");
callback(f);
return;
}
List tableData = new List();
POHWS.webservice.Service1 Service3 = new
POHWS.webservice.Service1();
try
{
Service3.BeginGetUpcoming(**track, delegate(IAsyncResult
iar)
{
tableData = Service3.EndGetUpcoming(iar).**ToList();
Android.App.Application.**
SynchronizationContext.Post(**delegate
{
if (tableData.Count == 0)
{
tableData[0].PostTime = "No data from the
webservice";
}
f.Add(tableData[0].PostTime);
Console.WriteLine("f[0] = {0}", f[0]);
callback (f);
}, null);
}, null);
}
catch (Exception oe)
{
f.Add(oe.ToString());
callback(f);
}
You might also need to marshall the callback calls on to the UI thread
Hope that works and helps
Stuart
On 2 March 2012 02:29, Paul Johnson wrote:
> Hi,
>
> This is probably down to me being a klutz, but can anyone spot why nothing
> is being returned? The Console.WriteLine is showing that something is being
> added to the list. I'm guessing a scope problem...
>
> (calling routine)
> case 1:
>List race = new List();
>currentview.**SetBackgroundDrawable(**
> Resources.GetDrawable(**Resource.Drawable.Back_**BobMoore));
>text.Text = Resources.GetString(Resource.**
> String.ComingSoon);
>webservice_user getRace = new webservice_user();
>race = getRace.getUpcomingRaces("**
> fairmeadowsUpcoming");
>races = race.ToArray();
>break;
>
> (webservice)
> List f = new List();
>if (checkForNetwork(true) != true)
>{
>f.Add("No network available");
>return f;
>}
>else
>{
>List tableData = new List();
>POHWS.webservice.Service1 Service3 = new
> POHWS.webservice.Service1();
>
>try
>{
>Service3.BeginGetUpcoming(**track,
> delegate(IAsyncResult iar)
>{
>tableData = Service3.EndGetUpcoming(iar).**
> ToList();
>Android.App.Application.**
> SynchronizationContext.Post(**delegate
>{
>if (tableData.Count == 0)
>{
>tableData[0].PostTime = "No data from the
> webservice";
>}
>
>f.Add(tableData[0].PostTime);
>Console.WriteLine("f[0] = {0}", f[0]);
>}, null);
>}, null);
>}
>catch (Exception oe)
>{
>f.Add(oe.ToString());
>return f;
>}
>return f;
>}
>
> Not sure, it could also be the
> Android.App.Application.**SynchronizationContext.Post
> code.
>
> Any help here would be appreciated. Thanks
>
> Paul
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[mono-android] Multiple proj configurations
Hi! I would like to have different project configuration for different architectures. This way I could build the proj separately for x86/arm/whatever... Is it possible? I could not manage to save this setting for the conf. -- View this message in context: http://mono-for-android.1047100.n5.nabble.com/Multiple-proj-configurations-tp5530720p5530720.html Sent from the Mono for Android mailing list archive at Nabble.com. ___ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
Re: [mono-android] Nothing being passed back from a webservice
Hi,
That's getting me a good bit further, but there is still something not quite
right. The new code looks like this
private string rTrack;
public ListgetUpcomingRaces(string track)
{
Listf = new List();
rTrack = track;
f = getUpcomingRacesCallBack(cb);
return f;
}
private List
getUpcomingRacesCallBack(Action> callback)
{
List f = new List();
if (checkForNetwork(true) != true)
{
f.Add("No network available");
callback(f);
}
else
{
List tableData = new
List();
POHWS.webservice.Service1 Service3 = new
POHWS.webservice.Service1();
try
{
Service3.BeginGetUpcomingRacesList(rTrack,
delegate(IAsyncResult iar)
{
tableData =
Service3.EndGetUpcomingRacesList(iar).ToList();
Android.App.Application.SynchronizationContext.Post(delegate
{
if (tableData.Count == 0)
{
tableData[0].PostTime = "No Upcoming Races
Found within the next 7 days";
}
else
{
for (int i = 0; i < tableData.Count; ++i)
f.Add(tableData[i].PostTime);
}
callback(f);
//return f;
}, null);
callback(f);
}, null);
}
catch (Exception oe)
{
f.Add(oe.ToString());
callback(f);
//return f;
}
}
return f;
}
I have tried this code and it returns nothing (much as before). Now, if I
change the 2nd method to a void, how can I then propogate List to
return it to the caller?
Thanks
Paul
--
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Re: [mono-android] Problem Connection Sqlserver in Release Mode
Just wanted to know, how that problem got solved, We are also facing the same problem. Also, is there some other way for database conection, like Client Server architechture. -- View this message in context: http://mono-for-android.1047100.n5.nabble.com/Problem-Connection-Sqlserver-in-Release-Mode-tp4912877p5530220.html Sent from the Mono for Android mailing list archive at Nabble.com. ___ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
Re: [mono-android] Nothing being passed back from a webservice
Passing in an Action is an asynchronous programming trick - I think
this is "functional programming" (and someone will hopefully correct me if
I'm wrong.
Basically you would declare your method like:
private void
getUpcomingRaces(Action> callback) { ... }
Then you would call it with:
private void SomeMethod()
{
getUpcomingRaces((list) => {
Console.WriteLine("list received of size " + list.Count);
foreach (var line in list)
{
Console.WriteLine(line);
}
});
}
Or you could pass in a method group instead of an anonymous method if you
prefer - e.g.:
private void SomeMethod()
{
getUpcomingRaces(ListProcessor);
}
private void ListProcessor(List list)
{
Console.WriteLine("list received of size " + list.Count);
foreach (var line in list)
{
Console.WriteLine(line);
}
}
On 2 March 2012 13:43, nodoid wrote:
> Hi,
>
> That's getting me a good bit further, but there is still something not
> quite
> right. The new code looks like this
>
>private string rTrack;
>
>public ListgetUpcomingRaces(string track)
> {
>Listf = new List();
> rTrack = track;
>f = getUpcomingRacesCallBack(cb);
>return f;
>}
>
>private List
> getUpcomingRacesCallBack(Action> callback)
> {
>List f = new List();
>if (checkForNetwork(true) != true)
>{
>f.Add("No network available");
>callback(f);
>}
> else
>{
>List tableData = new
> List();
> POHWS.webservice.Service1 Service3 = new
> POHWS.webservice.Service1();
>
>try
>{
> Service3.BeginGetUpcomingRacesList(rTrack,
> delegate(IAsyncResult iar)
>{
>tableData =
> Service3.EndGetUpcomingRacesList(iar).ToList();
>
> Android.App.Application.SynchronizationContext.Post(delegate
>{
>if (tableData.Count == 0)
>{
> tableData[0].PostTime = "No Upcoming Races
> Found within the next 7 days";
>}
>else
>{
>for (int i = 0; i < tableData.Count; ++i)
>f.Add(tableData[i].PostTime);
>}
>callback(f);
>//return f;
>}, null);
>callback(f);
> }, null);
>}
>catch (Exception oe)
>{
>f.Add(oe.ToString());
>callback(f);
> //return f;
>}
>}
>return f;
>}
>
> I have tried this code and it returns nothing (much as before). Now, if I
> change the 2nd method to a void, how can I then propogate List to
> return it to the caller?
>
> Thanks
>
> Paul
>
> --
> View this message in context:
> http://mono-for-android.1047100.n5.nabble.com/Nothing-being-passed-back-from-a-webservice-tp5529892p5531003.html
> Sent from the Mono for Android mailing list archive at Nabble.com.
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[mono-android] Android compatibility pack
Hi, I would like to use fragments API in my app. The problem is, my app should also support Android 2.2/2.3. In java you can use Android Compatibility Pack to access fragments even on Android 1.6. In M4A , AFAIK, it won't be possible since there is no way to inherit java types defined in third party jar (or maybe there is a way?). So, the question is, when can I expect better support for third party jars? Is there a chance M4A binding for compatibility pack will be shipped in near future, as it happened recently with google maps jar? Thanks, Piotr ___ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
Re: [mono-android] Android compatibility pack
On Mar 2, 2012, at 4:44 PM, Piotr Kryger wrote: > In M4A , AFAIK, it won't be possible since there is no way to inherit java > types defined in third party jar (or maybe there is a way?). There is a way, it's just very painful. Proper docs haven't been published, but there is a sample that shows manual binding: https://github.com/xamarin/monodroid-samples/blob/master/SanityTests/Adder.java https://github.com/xamarin/monodroid-samples/blob/master/SanityTests/ManagedAdder.cs The upcoming 4.2 series will include tooling to automate much of the binding drudgery; if possible, I'd suggest waiting. The 4.2 release will also contain bindings for the compatibility libraries. - Jon ___ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
[mono-android] UI threading problem
Hi,
This could possibly be down to my current state of needing sleep but then
again, it could be something else. I've searched for examples on how to fix
the problem below, but can't seem to find what I need and it's starting to
drive me potty!
Essentially, I have a race condition whereby the webservice is finishing way
after return has been given to the UI, so the UI is not displaying anything
at all.
Here's the code. The webservice does actually get the correct data which is
the pain of it all! The generateNewScreen method comes as a result of
clicking some text on a ListView area
(calling routine)
private void generateNewScreen(int t)
{
string[] races = new string[] { };
View currentview =
FindViewById(Resource.Id.relLayout);
TextView text =
FindViewById(Resource.Id.textTitle);
ListView listView =
FindViewById(Resource.Id.listView);
ImageView image =
FindViewById(Resource.Id.imgBack);
image.Visibility = ViewStates.Visible;
Console.WriteLine("t = {0}, addFactor = {1}", t,
addFactor);
switch (addFactor)
{
case 0:
switch (t)
{
case 0: races =
listviewInfo(Resource.Array.RaceTracks,
Resource.Drawable.Back_RaceHorsePlace, Resource.String.Tracks);
addFactor = 10;
break;
case 1: List
race = new List();
currentview.SetBackgroundDrawable(Resources.GetDrawable(Resource.Drawable.Back_BobMoore));
text.Text =
Resources.GetString(Resource.String.ComingSoon);
webservice_user
getRace = new webservice_user();
race =
getRace.getUpcomingRaces("RP");
races =
race.ToArray();
addFactor = 20;
break;
}
if (t < 6 || t == 7)
listView.Adapter = new
ArrayAdapter(this, Resource.Layout.listview_layout, races);
break;
}
(webservice)
private string rTrack;
public List getUpcomingRaces(string track)
{
List f = new List();
rTrack = track;
getUpcomingRacesCallBack((list) =>
{
f = list;
});
return f;
}
private void getUpcomingRacesCallBack(Action>
callback)
{
List f = new List();
if (checkForNetwork(true) != true)
{
f.Add("No network available");
callback(f);
}
else
{
List tableData = new
List();
POHWS.webservice.Service1 Service3 = new
POHWS.webservice.Service1();
try
{
Service3.BeginGetUpcomingRacesList(rTrack,
delegate(IAsyncResult iar)
{
tableData =
Service3.EndGetUpcomingRacesList(iar).ToList();
Android.App.Application.SynchronizationContext.Post(delegate
{
if (tableData.Count == 0)
{
f.Add("No Upcoming Races Found within
the next 7 days");
callback(f);
}
else
{
for (int i = 0; i < tableData.Count;
++i)
f.Add(tableData[i].PostTime);
callback(f);
}
}, null);
}, null);
}
catch (Exception oe)
{
f.Add(oe.ToString());
callback(f);
}
}
}
Is it possible
Re: [mono-android] Error Emulator OpenTk
No problem, I've found a workaround. Another topic. I'm not sure it's a real issue, but sometimes when the AndroidGameView renders graphics stuff, like textures, but for some reason there is a drop of FPS (app is running slow for a bit), I can cleary notice some sort of flikering. All textures appears messed up. Is it normal? Am I doing something wrong? There's a way to fix it? I'm having the same behavior with the iPhoneOSGameView either on simulator or devices (iPhone, iPad). -- View this message in context: http://mono-for-android.1047100.n5.nabble.com/Error-Emulator-OpenTk-tp5432528p5531685.html Sent from the Mono for Android mailing list archive at Nabble.com. ___ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
[mono-android] Version 4.0.4, Compatibility.v4.dll, and Fragments
I notice version 4.0.4 has Mono.Android.Compatibility.v4.dll in it's list of API Changes. Does this contain support for Fragments for pre Honeycomb versions of android? I installed the 4.0.5 beta, but cannot find the compatibility stuff anywhere. -Jeff Weber -- View this message in context: http://mono-for-android.1047100.n5.nabble.com/Version-4-0-4-Compatibility-v4-dll-and-Fragments-tp5532063p5532063.html Sent from the Mono for Android mailing list archive at Nabble.com. ___ Monodroid mailing list Monodroid@lists.ximian.com UNSUBSCRIBE INFORMATION: http://lists.ximian.com/mailman/listinfo/monodroid
