midp

Hi I am designing a midlet that needs a list which scrolls down to names based on the input from the phones letter keys (ie if the user presses the 'GHI' key then the names starting with 'G' are shown the same as in a phones contact-list) However the problem is that there is no keypressed event for j2me Lists or Forms. I realy don't want to have to reinvent the List from a Canvas. Could anyone tell me the best way to handle this?Thanks greatlyAharon Just a suggestion -- Use a TextField to hold input-- Use a ChoiceGroup to display your list-- Implement ItemStateListener and-- In the ItemStateChanged method iterate through the backing array of the ChoiceGroup and setSelectedIndex(...). If you need finer control than this can provide you may have to look at extending CustomItem db Thanks for the idea It helped me alot. I thought of checking ItemStateChanged on a choicegroup but I didn't think of checking it on a textbox!So thats half the problem however this still needs more work since if my choicegroup has 100 items then you would have to scroll through all those items before reaching the textbox (or if the textbox is before the choicegroup then you have to scroll all the way back). Is there a way to show only a small portion of the items in the group? (a popup box also wont help since I need to show atleast afew items at once)?Thanks anyway! Hmm.. the small screen is a big pain isn't it!Suppose you dynamically filter the list of potential entries based on what has been already entered in the TextField? Something like this Thanks I also thought about the filter idea. However that means that the user will have to search for his item using almost only the letter keys (the arrows wont help him much) I know I'm being abit picky now butI think I'm just going to do it from a canvas and finished. Thanks for the help!

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Hello fellow coders,I'm currently working on a modified version of the mTank tutorial code*. I'm using this example to hit the books some of the basics of MIDP game create by mental act and am currently trying to evaluate out how to prevent the player from leaving the Canvas. I'll elaborate;The canvas has been made 160 by 160 pixels large and is centered on the screen of the mobile. What I've been trying to do is prevent the player sprite from being able to leave the beg. alter now it's possible to get the beg since the game engine seems to think that it can use the entire screen even though the beg coat has been limited to the before mentioned 160*160. First thing I tried was to set the Graphics viewclip to 160*160. While this does cut off all graphics outside the canvas it's still possible to move outside the canvas. I started googling and searching these forums (little results) and then looked at some of the WTK example games. The Snake game in the WTK gave me an idea and that's when I wrote up the following loop; The reason why I'm here; it doesn't bring home the bacon. When I run the simulator it doesn't furnish an error but it keeps hanging at a white check. (As if it's loading but won't fill.)So my challenge is; suggestions?Is my code wrong or is there a more simple (or complex ;)) way of preventing the player sprite from moving outside the game canvas?*) Code to be open at this address: http://developers sun com/mobility/midp/articles/game/index html

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Hello fellow coders,I'm currently working on a modified version of the mTank tutorial code*. I'm using this example to hit the books some of the basics of MIDP game design and am currently trying to figure out how to prevent the player from leaving the Canvas. I'll clarify;The canvas has been made 160 by 160 pixels large and is centered on the screen of the mobile. What I've been trying to do is prevent the player sprite from being able to leave the beg. Right now it's possible to get the canvas since the bet engine seems to think that it can use the entire screen even though the canvas coat has been limited to the before mentioned 160*160. First thing I tried was to set the Graphics viewclip to 160*160. While this does clip off all graphics outside the canvas it's comfort possible to act outside the canvas. I started googling and searching these forums (little results) and then looked at some of the WTK example games. The Snake game in the WTK gave me an idea and that's when I wrote up the following loop; The reason why I'm here; it doesn't work. When I run the simulator it doesn't give an error but it keeps hanging at a color screen. (As if it's loading but won't load.)So my challenge is; suggestions?Is my label wrong or is there a more simple (or complex ;)) way of preventing the player sprite from moving outside the game canvas?*) Code to be found at this address: http://developers sun com/mobility/midp/articles/bet/index html

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Hi GuysI was wondering if you could back up me. I am completly new to J2ME and I am working with a Nokia N95. Basically I be my N95 to execute the following piece of pseudo:{open a serversocket port 8185}{display UI}The UI will be a two button interface. Left = Yes. Right = No{listen for keypress}{if detected determine which one}{if Left key then send "1" to socket}{if Right key then send "2" to socket}I can write this in Java no problem: Its just missing the key listeners. Is what im wanting to do impossible? Can i just open up a socket and send data down it? My client application is a Applet that opens a socket to the device though its inbuilt webserver but I dont know if the device itself can do what im asking... anyone got any ideas? :) OK heres the full story:Nokia have released a Mobile Web Server that among other things allows you to answer up content. I have created an JApplet that first opens a socket to my mobile phone i e xxxxx mymobilesite net:8185 and runs in a infinate loop waiting to receive something. It wants to receive either a string value "next" or string value "previous" and will then perform an action based on this. I have put this applet onto my mobile web server and I can access the applet and transfer it. Prior to this I tested it locally to ensure that it was correctly signed in order to be able to open a socket connection.. which it is and it canWhat I need to do now is to somehow create a mobile application that communicates in the same way as ServerSocket does.. ie No URL is required the program just opens a socked on a given port number. What I am hoping is that I will be able to send data in the same way as my example Java label does to the webserver. Effectivly allowing my Phone to send some data though a Client application to the in build web server and drink to the Applet that is listening.. does this make more comprehend? hello,i evaluate what you are trying to do is somewhat possible.. One thing is that i am not sure if you can use any sockets with MIDP i am fairly sure that you can only sure 80. HTTP. In that case you may demand a Servlet to handle this? as opposed to a applet however not too sure?What I can tell you is how I would setup your MIDP Client. Firstly you will need to choose do you want to have a custom interface or just a generic call. Either low-level graphics using the Canvas or High-level (way easier) using the Form. I think you should probably start by developing with Forms. Basically you will need one form.

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Together with some of the people working on S60's java platforms we came up with a enumerate of the coolest eSWT features we believe the MIDP developers will appreciate most. Because I wanted to check it to ten items and did not be to write a book for a communicate affix it is not a complete enumerate of eSWT features. It is a list for MIDP crowd extracted from a discussion with MIDP crowd. Advanced widgets such as Table. Tree. Browser and ListBox: So far MIDP developers were creating their custom widgets to get the same advanced functionality. I am sure not having to create custom widgets for ordain be appreciated. MIDP is not stuck with the full screen text anymore. Text can be positioned anywhere with full benefits of the platform supported text editing facilities including edit modes and T9. Access to native dialogs such as FileDialog. DirectoryDialog. ColorDialog and others: Now java applications can use the same dialogs as the native applications of the platform. Create images on memory change them and save them to a file. This makes taking screenshots on your mobile java applications a breeze. It is possible to have multiple levels of menus or commands. You can use images on them or have check communicate style menus. Use eSWT's MobileDevice to sight enter or screen capabilities of device change surface get notifications of changes such as a Bluetooth keyboard added and alter application behavior Events and many of them: Mobile java applications can get notifications of everything happening in your UI keys walk selections traverses and many other. Got a problem have a look at the code better act a conjoin to fix it. Discuss your problem or a missing feature with the implementation team

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Hi there,Geez. I am pretty depressed as I seem to be too incompetent to implement the most basic HttpConnection use case. My MIDlet needs to issue a single HTTP POST request during the complete MIDlet lifetime. Pretty basic one should think. I spawn a main thread for the MIDlet from the main go I spawn a go for the HTTP connection. However once the connection thread blocks the main go seems to block too. Let me give you some minimal code that reproduces this behaviour. Here's the MIDlet. It simply creates the main go in startApp(). Here's the main thread. It just creates the connection thread and then either sleep()s for 5000 ms or wait()s for 5000 ms. It also measures how desire the rest() or act() actually took. The idea is to go approve to the user after the timeout and express him/her sorry it did not work out. That's enough for me. I don't even undergo to shut down the connection thread. And here's the code for the connection go. For the sake of brevity it only contains the statements that are required to reproduce the problem. I am deliberately using an IP address that does not exist in my evaluate network to see how my code behaves under this error instruct. "Connection thread method entered now opening connection" );StreamConnection streamConnection = (HttpConnection)Connector open( "Connection opened now setting communicate method" );((HttpConnection)streamConnection) setRequestMethod(HttpConnection. POST);System out println( "Request method set now opening output stream" );OutputStream out = streamConnection openOutputStream();System out println( So here's how the label behaves. The out flush() method invocation in the connection thread blocks as it causes the HTTP connection to get established. HOWEVER the main go blocks too. So the sleep() or wait() does not take about 5000 ms but more than 20000 ms. The main go seems to only continue executing once out color() returns. Bizarre. Here's the output of the MIDlet. It is basically the same for WTK 2.2 (Windows and Linux). WTK 2.5.1 (Windows) and the SonyEricsson SDK 2.2.4 (Windows). Running with storage grow temp. DefaultColorPhone44Running with locale: English_United States.1252Running in the maximum security domainStarting main threadMain go method entered now starting HTTP threadHTTP thread started now waiting for 5000 msConnection go method entered now opening connectionConnection opened now setting request methodRequest method set now opening create streamOpened output stream now writing byteWrote byte now flushing output streamjavax microedition io. ConnectionNotFoundException: TCP openat com sun midp io j2me socket. Protocol connect(+99)at com sun midp io. ConnectionBaseAdapter openPrim(+52)at com sun midp io j2me socket. Protocol openPrim(+108)at com sun midp io. ConnectionBaseAdapter openPrim(+14)at com sun midp io. ConnectionBaseAdapter openPrim(+8)at com sun midp io j2me http. Protocol cerebrate(+73)at com sun midp io j2me http. Protocol streamConnect(+57)at com sun midp io j2me http. Protocol startRequest(+12)at com sun midp io j2me http. Protocol sendRequest(+38)at com sun midp io j2me http. Protocol color(+36)at com sun midp io. BaseOutputStream flush(+11)at HttpThread run(+76)Waited for 5000 ms which took us 21000 msExecution completed.3423649 bytecodes executed354 go switches1669 classes in the system (including system classes)17953 dynamic objects allocated (546852 bytes)3 garbage collections (465956 bytes collected)I must be missing something pretty obvious as this is really pretty basic isn't it? Any thoughts?Thanks,Thomas hello not too sure but maybe try removing the flush(). and also don't drop to cloce the outputstream and httpconnection after you finished using it?../f Hey freddiegold,Thanks for sharing your thoughts. If I get out the color() then the problem gets postponed until I do getResponseCode() on the HttpConnection. So it really looks to me that the VM has a problem in this case with the native networking API blocking. Yup agreed you should always change state() cram. I just meant to give the minimal code possible that reproduces my problem for the sake of brevity. Thomas Hey sailesh_dit,Thanks for confirming this problem. So it seems more and more to me that this is a command problem with at least some VMs and/or WTKs and not my accuse. My current guess is that a blocking native call messes up the VM. Maybe I should open another thread with this as a subject. I was just a bit surprised that this wasn't discussed anywhere. Everywhere I construe "Run your networking label in a displace thread!" and nobody seemed to undergo run into problems with this approach which left me a little confused. So it is good to comprehend that you've also experience this problem. Thomas

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Hi there,Geez. I am pretty depressed as I seem to be too incompetent to implement the most basic HttpConnection use inspect. My MIDlet needs to air a hit HTTP affix request during the complete MIDlet lifetime. Pretty basic one should evaluate. I cause a main thread for the MIDlet from the main go I spawn a thread for the HTTP connection. However once the connection thread blocks the main go seems to block too. Let me give you some minimal code that reproduces this behaviour. Here's the MIDlet. It simply creates the main thread in startApp(). Here's the main go. It just creates the connection thread and then either sleep()s for 5000 ms or wait()s for 5000 ms. It also measures how desire the rest() or act() actually took. The idea is to go approve to the user after the timeout and tell him/her sorry it did not bring home the bacon out. That's enough for me. I don't change surface have to shut down the connection thread. And here's the code for the connection thread. For the sake of brevity it only contains the statements that are required to create the problem. I am deliberately using an IP address that does not exist in my test network to see how my code behaves under this error condition. "Connection go method entered now opening connection" );StreamConnection streamConnection = (HttpConnection)Connector open( "Connection opened now setting request method" );((HttpConnection)streamConnection) setRequestMethod(HttpConnection. POST);System out println( "Request method set now opening output be adrift" );OutputStream out = streamConnection openOutputStream();System out println( So here's how the code behaves. The out color() method invocation in the connection thread blocks as it causes the HTTP connection to get established. HOWEVER the main thread blocks too. So the sleep() or wait() does not act about 5000 ms but more than 20000 ms. The main go seems to only continue executing once out color() returns. Bizarre. Here's the output of the MIDlet. It is basically the same for WTK 2.2 (Windows and Linux). WTK 2.5.1 (Windows) and the SonyEricsson SDK 2.2.4 (Windows). Running with storage root temp. DefaultColorPhone44Running with locale: English_United States.1252Running in the maximum security domainStarting main threadMain go method entered now starting HTTP threadHTTP go started now waiting for 5000 msConnection go method entered now opening connectionConnection opened now setting request methodRequest method set now opening output streamOpened output stream now writing byteWrote byte now flushing create streamjavax microedition io. ConnectionNotFoundException: TCP openat com sun midp io j2me socket. Protocol connect(+99)at com sun midp io. ConnectionBaseAdapter openPrim(+52)at com sun midp io j2me socket. Protocol openPrim(+108)at com sun midp io. ConnectionBaseAdapter openPrim(+14)at com sun midp io. ConnectionBaseAdapter openPrim(+8)at com sun midp io j2me http. Protocol cerebrate(+73)at com sun midp io j2me http. Protocol streamConnect(+57)at com sun midp io j2me http. Protocol startRequest(+12)at com sun midp io j2me http. Protocol sendRequest(+38)at com sun midp io j2me http. Protocol color(+36)at com sun midp io. BaseOutputStream flush(+11)at HttpThread run(+76)Waited for 5000 ms which took us 21000 msExecution completed.3423649 bytecodes executed354 thread switches1669 classes in the system (including system classes)17953 dynamic objects allocated (546852 bytes)3 garbage collections (465956 bytes collected)I must be missing something pretty obvious as this is really pretty basic isn't it? Any thoughts?Thanks,Thomas hello not too sure but maybe try removing the color(). and also don't forget to cloce the outputstream and httpconnection after you finished using it?../f Hey freddiegold,Thanks for sharing your thoughts. If I leave out the color() then the problem gets postponed until I do getResponseCode() on the HttpConnection. So it really looks to me that the VM has a problem in this case with the native networking API blocking. Yup agreed you should always close() cram. I just meant to furnish the minimal label possible that reproduces my problem for the sake of brevity. Thomas Hey sailesh_dit,Thanks for confirming this problem. So it seems more and more to me that this is a command problem with at least some VMs and/or WTKs and not my fault. My current guess is that a blocking native call messes up the VM. Maybe I should change state another go with this as a subject. I was just a bit surprised that this wasn't discussed anywhere. Everywhere I construe "Run your networking code in a separate thread!" and nobody seemed to have run into problems with this come which left me a little confused. So it is good to hear that you've also undergo this problem. Thomas

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Hi there,Geez. I am pretty depressed as I be to be too incompetent to implement the most basic HttpConnection use case. My MIDlet needs to air a single HTTP POST communicate during the end MIDlet lifetime. Pretty basic one should think. I spawn a main go for the MIDlet from the main thread I cause a thread for the HTTP connection. However once the connection thread blocks the main go seems to block too. Let me give you some minimal code that reproduces this behaviour. Here's the MIDlet. It simply creates the main go in startApp(). Here's the main thread. It just creates the connection thread and then either sleep()s for 5000 ms or act()s for 5000 ms. It also measures how long the rest() or wait() actually took. The idea is to go back to the user after the timeout and express him/her sorry it did not work out. That's enough for me. I don't even have to change state drink the connection thread. And here's the code for the connection go. For the sake of brevity it only contains the statements that are required to create the problem. I am deliberately using an IP communicate that does not exist in my evaluate network to see how my label behaves under this error condition. "Connection thread method entered now opening connection" );StreamConnection streamConnection = (HttpConnection)Connector open( "Connection opened now setting request method" );((HttpConnection)streamConnection) setRequestMethod(HttpConnection. POST);System out println( "communicate method set now opening create stream" );OutputStream out = streamConnection openOutputStream();System out println( So here's how the code behaves. The out flush() method invocation in the connection thread blocks as it causes the HTTP connection to get established. HOWEVER the main thread blocks too. So the sleep() or wait() does not act about 5000 ms but more than 20000 ms. The main thread seems to only act executing once out flush() returns. Bizarre. Here's the create of the MIDlet. It is basically the same for WTK 2.2 (Windows and Linux). WTK 2.5.1 (Windows) and the SonyEricsson SDK 2.2.4 (Windows). Running with storage root temp. DefaultColorPhone44Running with locale: English_United States.1252Running in the maximum security domainStarting main threadMain thread method entered now starting HTTP threadHTTP go started now waiting for 5000 msConnection thread method entered now opening connectionConnection opened now setting request methodRequest method set now opening output streamOpened create stream now writing byteWrote byte now flushing create streamjavax microedition io. ConnectionNotFoundException: TCP openat com sun midp io j2me socket. Protocol cerebrate(+99)at com sun midp io. ConnectionBaseAdapter openPrim(+52)at com sun midp io j2me socket. Protocol openPrim(+108)at com sun midp io. ConnectionBaseAdapter openPrim(+14)at com sun midp io. ConnectionBaseAdapter openPrim(+8)at com sun midp io j2me http. Protocol cerebrate(+73)at com sun midp io j2me http. Protocol streamConnect(+57)at com sun midp io j2me http. Protocol startRequest(+12)at com sun midp io j2me http. Protocol sendRequest(+38)at com sun midp io j2me http. Protocol flush(+36)at com sun midp io. BaseOutputStream color(+11)at HttpThread run(+76)Waited for 5000 ms which took us 21000 msExecution completed.3423649 bytecodes executed354 go switches1669 classes in the system (including system classes)17953 dynamic objects allocated (546852 bytes)3 garbage collections (465956 bytes collected)I must be missing something pretty obvious as this is really pretty basic isn't it? Any thoughts?Thanks,Thomas hello not too sure but maybe try removing the flush(). and also don't drop to cloce the outputstream and httpconnection after you finished using it?../f Hey freddiegold,Thanks for sharing your thoughts. If I get out the flush() then the problem gets postponed until I do getResponseCode() on the HttpConnection. So it really looks to me that the VM has a problem in this inspect with the native networking API blocking. Yup agreed you should always close() stuff. I just meant to furnish the minimal code possible that reproduces my problem for the sake of brevity. Thomas Hey sailesh_dit,Thanks for confirming this problem. So it seems more and more to me that this is a general problem with at least some VMs and/or WTKs and not my fault. My current guess is that a blocking native call messes up the VM. Maybe I should open another thread with this as a affect. I was just a bit surprised that this wasn't discussed anywhere. Everywhere I read "Run your networking label in a separate thread!" and nobody seemed to have run into problems with this come which left me a little confused. So it is good to hear that you've also experience this problem. Thomas

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Hey. could gratify anyone create verbally a short say on safest way of creating a trial version of my j2me application?? like i be to limit the be of tries. like say 25 tries. are there any applications that do this. or could u declare good coding methods.. ??thanks a lot! Hi,You can use the Record hold on implementation to ascertain the number of tries. But if once the app is uninstalled then the preserve store is also lost. If you be you can use the File Connection API to write to register system. This asks for user permissions. Regards,Rakesh pachawa. rakesh pachava wrote:Hi,You can use the Record hold on implementation to count the number of tries. But if once the app is uninstalled then the preserve store is also lost. If you want you can use the register Connection API to write to file system. This asks for user permissions. Regards,Rakesh pachawa. yes. this is the method im using.. & i dont be to access the File System directly. cause i want maximum compatibility. I don't mind re-installing the application causing the trial to be re-started. thats fine but i don't want someone to be able to crack the class files by taking out the code which checks the Record hold on. how are j2me applications normally cracked pls?? If you obfuscate your package no one can alter your class files. Use proguard or if you are using NetBeans then in properties you can set the obfuscation settings. You can configure the Eclipse IDE with proguard to obfuscate. Regards,Rakesh Pachawa.

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hi... Need a help from u guys... I need to call a telephone be using jsr180... Can any one give me the syntax or the change to displace an invite request for the telecommunicate be. I can register successfully enter to the server but when i send an invite request it shows me error... Need it urgent.... Thank u.... Hi.... My doubt is not to use platformRequest to make normal calls... anyway thanks for your response... My call should be using sip.. desire :sip : xxxxxxxxxx@xxx xxx x xxx:5060similar to this.. but i don't no the exact syntax for this... http://www forum nokia com/enter/Java_ME_Developers_Library_v1/GUID-2508C2ED-C0BE-4512-9302-6805AB7ACB0E/javax/microedition/sip/SipConnection html the URI for opening a SipClientConnection for a phone call is of the formsip:+358-555-1234567;postd=pp22@foo com;user=phonedb Hi guys ,At last its working for me.... But i have one more problem now.... Some time my registration not working properly... when i try to enter my application it shows comment.... Nov 3 15:28:00 NOTICE[21107]: chan_sip c:11760 sip_poke_noanswer: Peer '2002' is now UNREACHABLE! Last qualify: 0Why this happens. Because of this i cannot receive any incoming calls or message. What should i do to register properly. As your code has worked correctly it's probably OK. Looks like a network problem to me. Just a thought any chance of this being due to an idle timeout on the connection? On some handsets idle timeout can be set manually. I would use "Never" db

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