Main : Unanswered Threads - Java ME

KXML problem on sony ericsson

developerworldwatch@kpi-consulting.net — Fri, 20 Nov 2009 21:59:48 GMT

Hi,

i'm using KXML to parse a XML file. On other devices (e.g. nokia) it works perfectly but on Sony Ericsson (e.g. K550) i get an parsing error with the same code.

XML structure:

<Plan version="1">
    <task name="Call Marry" type="1">
        <description>The description about the call</description>
        <field name="Answers"></field>
    </task>
    <task name="Buy food" type="1">
        <description>The description about buying food</description>
        <field name="Problems"></field>
    </task>
    <task name="Meeting with John" type="2">
        <description>The description about the meeting</description>
        <field name="Topics"></field>
        <field name="Notes"><(field>
    </task>
</Plan>

Parsing Code:

do {
      if (parser.getAttributeValue(POSITION_TYPE).equals(TYPE_ONE_FIELD)) { 
                String name = parser.getAttributeValue(FIRST_VALUE);
                String type = parser.getAttributeValue(Second_VALUE);
                parser.nextTag();
                String description = parser.nextText();
                parser.nextTag();
                String textfieldname = parser.getAttributeValue(FIRST_VALUE);           
                parser.nextTag();
                parser.nextTag();
                parser.nextTag();
                TypeOnefield t = new TypeOnefield(name, type, description, textfieldname);
                tasks.addElement(t);
     else if(parser.getAttributeValue(POSITION_TYPE).equals(TYPE_TWO_FIELD)){
                String name = parser.getAttributeValue(FIRST_VALUE);
                String type = parser.getAttributeValue(Second_VALUE);
                parser.nextTag();
                String description = parser.nextText();
                parser.nextTag();
                String textfieldname1 = parser.getAttributeValue(FIRST_VALUE);
                parser.nextTag();
                parser.nextTag();
                String textfieldname2 = parser.getAttributeValue(FIRST_VALUE);
                parser.nextTag();
                parser.nextTag();
                parser.nextTag();
                TypeTwofield t = new TypeTwofield(name, type, description, textfieldname1, textfieldname2);
                tasks.addElement(t);
     }
} while (!parser.getName().equals("Plan"));

With the parser i get the information out of the XML file and store it in the tasks vector. I return the vector later on to the view class and there it will be displayed on the phone (or not if i get a empty vector back...).

When i run it in the Sony Ericsson emulator it works..but on the phones i get a Nullpointerexception (because the view gets no data from the parser...). But whats wrong with my parser code and why does it work on some other brands?

I hope you can help me...I'm running out of ideas.

Thanks!

Matze

Questions regarding MMAPI Documentation and Implementation

developerworldwatch@kpi-consulting.net — Fri, 20 Nov 2009 10:39:15 GMT

In the standard Java™ Platform, Micro Edition, CLDC – MIDP 2 documentation on page's 72 and 73 with paragraph : Playing media files with MMAPI using progressive download I read the following sentences :

To make use of progressive download in a player application, the createPlayer method must be

invoked with a file scheme locator string as parameter, for example:

Manager.createPlayer(file:///c:/sounds/song.mp3);

Unfortunately I haven't found any documentation giving a good example of this, I did found an article on this site itself with some code snippets and some global explanation. Is there any chance that "tutorial" will be expanded into something more usefull ?

Also, is my understanding correct that you can use one single Player connected to an audio file and in the meantime downloading and expanding this same file ? Or are multiple sound files and Players involved ? That I cannot establish from the aforemntioned "tutorial" and/or the documentation...

Also the next sentence is used in the documentation :

Note: from JP-7 phones, progressive download according to 3GPP TS 26.234 45.3.0 is supported both
for http download and InputStream via JSR-135.

Ok, so an InputStream or a http adress can be used instead of the "file" locator... But, is this only valid for 3GPP (so no MP3, or AAC)... So actually this is more of a video stream than an audio stream right ?

As a last point, is there any SE MMAPI implementation which can play AAC streams ?

Thanks in advance for any help, tips or pointers !

Set the width/height of video on SE Satio

developerworldwatch@kpi-consulting.net — Fri, 20 Nov 2009 08:55:17 GMT

Is there any way to set the video width and height when playing a video on a Canvas?

This is a fairly simple task on other phones:
videoControl.setDisplaySize(width,height);

But SE Satio seems to ignore it.

Anybody else has similar difficulties?

[K800i] Player.getDuration() maxed out ?

developerworldwatch@kpi-consulting.net — Tue, 17 Nov 2009 16:19:49 GMT

Hi,

I have been feeding a Player a MP3 chunk :

ByteArrayInputStream is = new ByteArrayInputStream(passedData);
Player newPlayer = Manager.createPlayer(is, "audio/mpeg");

Which is working pretty good, the problem is that when I try to use getDuration() method of the Player class on one of those objects, for example :

long clipLength = playingPlayer.getDuration()/1000; //in milliseconds

I will get a maximum value of 4 seconds...

If I use a 1 second chunk of MP3 data, it will correctly return 1 second...

Same for 2, 3 and 4 seconds... After that it will always return 4 seconds...

Is this some kind of known bug ?

Is there a workaround ?

Am I doing something stupid ?

I have tested it on several nokia's (N95, N97, 5800XM) and also on SE's own emulators and it works fine there

Devices that is possible to get cell id

developerworldwatch@kpi-consulting.net — Tue, 17 Nov 2009 15:56:36 GMT

Hello again,

So...in all the devices that use JP 3, 4, 5,and 6 it's impossible to use:

System.getProperty(cellID)

And in all the devices that use JP 8 it's possible to use this code...

My question is.... In devices that use JP 7... how can i know if the JP is aboce or over 7.3?

Becouse in the tab "Phones -> Java me" i can see only JP 3 4 5 6 7 8 and not 7.3...

Thanks.. and sorry again about my bad english

Get cellid mcc mnc and lac on k750i

developerworldwatch@kpi-consulting.net — Tue, 17 Nov 2009 13:22:20 GMT

Hello,

i'm brazilian... sorry for my bad english...

How can i get this informations from the Sony ericsson K750i?

System.getProperty("com.sonyericsson.net.cellid");

System.getProperty("com.sonyericsson.net.mnc");
System.getProperty("com.sonyericsson.net.mcc");
System.getProperty("com.sonyericsson.net.lac");

this 4 are returning null....

I need to do something before do this commands? like..open an connection?

Thanks!!!

Problem in socket conneciton

developerworldwatch@kpi-consulting.net — Mon, 16 Nov 2009 07:48:31 GMT

Hi all.,

I am trying to connect to my server(java) using sockets. Am able to connect to the server, but am unable to send/Rcv data.

My client (mobile) sample code
.
.
.
String connectString = "socket://example.aeroalias.com:10003";
StreamConnection streamConnection = (StreamConnection) Connector.open(connectString);
OutputStream os = streamConnection.openOutputStream();
Calendar cal = Calendar.getInstance();
String str = cal.getTime() + "";
byte[] toWrite = str.getBytes();
for (int i = 0; i < str.length(); i++) {
os.write(toWrite[i]);
}
.
.

Am unable to send te time to my server.,
My server is running and am able to connect with my emulator.,
Please help me out!!

Satio M3G Benchmark, FPC Bench, framerate cap.

developerworldwatch@kpi-consulting.net — Sun, 15 Nov 2009 14:51:47 GMT

Hi,

I noticed a strange behaviuour with FPC Bench rendering M3G scenes...

I noticed that Satio renders 8 different scenes at the same framerate:

Render 1= 21
Render 2= 21
Render 3= 21
Render 4= 21
Render 5= 19
Render 6= 19
Render 7= 20
Render 8= 19

The first two scene is a simple rotating cube and the others one is m3g scene with different complexity...

It seems that there is some framerate cap, but I can't understand why...

On others phone we have a really different results between various sceens because of the different complexity of the scenes,

why on satio we see this framerate?

Hope to see a good reply...

Thanks for your good piece of work.

Canvas Painting after communication is misbehaving

developerworldwatch@kpi-consulting.net — Fri, 13 Nov 2009 11:59:43 GMT

In some of the sony phone W980, T700, C902, G705 while doing communication with a Midlet applicaiton, after getting response the next screen is not being displayed.

After initializing communication from the Midlet application there is something unusual happens such that the Display object of Midlet gets disturbed. The application can not continue painting using Graphics available from current Display object and hence can not display the next screen.

However

The Display object still responds to the events (That is triggered by key presses on the keyboard).
Only the top of the canvas is redrawn where the network icon is displayed.

When the Midlet application gets callback of showNotify() (after doing mini/maximize application or flip close/open) the Display / Graphics object gets refreshed (corrected) and it is able to display the screen correctly.

collision between mesh?

developerworldwatch@kpi-consulting.net — Fri, 13 Nov 2009 08:14:49 GMT

hi All,im really new to M3G, but i wanna learn it. and i've been having some problems with collision detection between mesh can some1 show me a simple example on how to do this. im using retained mode.

Please, atleast a sample code will do....im trying to do the rayintersection thing, but to no avail.