java-me

问题 I am debugging an application in Eclipse. It works fine but at some methods, for example enterEventDispatcher() , it shows me source not found. Which source files should be attached to avoid this problem? I am not getting it clearly. 回答1: It sounds like you are trying to debug into the RIM BB OS code. As far as I am aware, RIM does not provide the source code for their API, so there is no source to attach. 来源： https://stackoverflow.com/questions/5949532/debugging-blackberry-application-in

问题 In Blackberry application I want to check what type of network connection is being used on particular phone, whether it is BES/MDS,BIS-B or Direct Tcp. Is there any way to find out this? Many applications like Jive,Opera and many more are doing this kind of check. Please help. 回答1: Your question springs from an incorrect assumption. A Blackberry could be communicating over any or all of those channels simultaneously. In fact any application may as well. At any particular time you can

问题 I am interested in developing apps for feature phones, since a large percentage of mobile phones are feature phones in both developed and developing countries. I have read about the fragmentation issues caused by the various feature phone devices on the market. I have some questions: 1 . What development tools do I need if I want to develop for most of the various feature phones on the global market? (I've read about vendor-specific tools such as those from Nokia and Samsung, and I've also

问题 This might seem like a very trivial problem but I have spent quite some time on this without finding a viable solution. Nokia devices have a central select button,which allows us to assign soft keys to it. According to my requirement, I need to assign a specific command as the soft key. For instance it might be "Play" on one screen and "Select" on other. Note that I have a default select command already set using: setDefaultCommand((Command) v.elementAt(v.size() - 1)); which is always the

问题 I have written simple j2me program with LWUIT package.I have added one Form in my MIDLET class file. Suppose,user press a key then I want to show another Form .But I couldn't be able to capture key event in my LWUIT Form . This is my code snippt import javax.microedition.midlet.*; import com.sun.lwuit.*; import com.sun.lwuit.events.*; public class MultipleForm extends MIDlet implements ActionListener{ private Form mFirstForm, mSecondForm; public void startApp() { if (mFirstForm == null) {

问题 I want to create a simple j2me application for a start which links with facebook For this , I downloaded the facebook api from http://kenai.com/projects/facebookapime/downloads Then i followed this site for tutorials http://j2megroup.blogspot.in/2011/06/facebook-api-me-10-tutorial.html But then for first i got 2 problems 1) I did not get Browser class ( it gives a compilation error in eclipse even after adding the external library ) 2) I did not got what to put in Redirect uri (i got first 2

问题 I want to write an application like a Flashlight (with the help of the camera LED). Player player = javax.microedition.media.Manager.createPlayer("capture://video?encoding=video/3gpp"); player.realize(); VideoControl videoControl = (VideoControl) player.getControl("VideoControl"); if(videoControl != null) { videoField = (Field)videoControl.initDisplayMode( VideoControl.USE_GUI_PRIMITIVE, "net.rim.device.api.ui.Field" ); try { videoControl.setDisplaySize(1, 1); } catch(Exception e) { PGLogUtil

问题 I am writing a custom archive format in JAVA (J2ME to be precise). The archiver works OK, however I have little problems with de-archiving. How could I know how many bytes have been read when reading a UTF8 string thorough the readUTF method? I know that the first two bytes of a string saved using writeUTF are a short value of the string's length, but I'd like a nicer solution. Or is there any way to know how many bytes are left till the end of the DataInputStream (the available method doesn

问题 I been looking around and at sources like this one they say that a Midlet can invoke another if they are in the same suite, or if they are in the same namespace and in the same jar file. I do not understand what a Midlet-Suite is? Also after searching through the web I did not find any documentation or code examples for One Midlet invoking another Midlet. 回答1: The other replies are pretty much taking care of your questions about MIDlet Suites but I would suggest reading the MIDP specification

问题 I wrote a function which returns a string. And there is a Thread implementation the function, like follows, and I am calling [metaDataTrimmed = getMetaData(url);] this function and store the return value to a string value. My problem is the the function immediately returns the null string, which is its initial value. And I checked my function works properly. So I try for a Thread.sleep() method using a dirtybit and also tried for Thread.join(). Is there any standard method in BlackBerry to