blackberry

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . how to get a field press event in blackberry。 I write a component extends Field class , want to get a press event( press down still not press up ) . please help me. 回答1: You can override this method: protected

问题 I know we Alert is used as Pop up box in j2me but can I create a pop up as good looking as dialog box of Blackberry using pure j2me packages? Or I need to customize using Canvas class? Is there a dialog box in j2me? if yes can I get an example? 回答1: Dude, Just create one canvas with background image transparent and use another images for same like dialog box(images create from adobe Photoshop) , so this canvas you can use it anywhere in application. thanks 回答2: use d.show(); show method is

问题 I have an XML handler being used in the following fashion: SAXParserFactory.newInstance().newSAXParser().parse(new ByteArrayInputStream(response.getBytes()), myXMLHandler); My target platform is the 4.5 JRE in order to cover a majority of the market. For some reason, this parser works on 4.5 but doesn't work on any later version of the OS. I get a Malformed UTF-8 exception generated by the parser. Any ideas as to what would cause the different behavior? Are there characters that aren't kosher

问题 I heard this term recently. What are subscription applications(for a mobile platform). Does this term fall under standard usage? Are there any examples of such a mobile application? Thanks. 回答1: In subscription application you pay for right to use software for some period of time. E.g. application could cost for example $5 per month and as long as you keep paying, you can use the application. I think that this is rather common term. I don't know about mobile apps but one example subscription

问题 I am getting JSON response from the server..Inside that JSON string i am having HTML content which i need to display in a field.. Can anyone help.. 回答1: You can just eval the JSON response, though for better security adding JSON parsing support is fairly simple, try the json2.js library. Then just use normal JS notation to extract your HTML string and insert it into your text field. Note that: The Blackberry browser didn't support XMLHttpRequest until 4.6, for example the Curve 8310 does not

问题 I am a newbie in Blackberry Development and has got stuck on a very complex thing. I have to make an application which should be support all O.S 6 and 0.S 7 based mobile phones. Now I have different screen resolutions for different handsets in BB OS 6 and 7. Now how can i manage my background images, and its button positions to be synced on all size of devices. I have created an images for the screen size of 640x480 and according to it I have placed some button on x,y positions. now if i

问题 I am displaying a double to the user, but it is printed as 1.00000000001 However, I need only two digits after the decimal point. 回答1: There's a class called Formatter that can do the trick. Here's a code snippet: double value = 1.24790000001; Formatter formatter = new Formatter(); String formatted = formatter.formatNumber(value, 2); And, here's a link to the JavaDoc: javax.microedition.global.Formatter 回答2: Have you looked at String.format e.g. String x = String.format("%.2f", number); http:

问题 I am using the built in field manager from RIM. (SDK 7.0) Yet the effects are shocking. The layout is dreadful, and Ive no idea how to customise it. You can see the difference to my app against facebook app. Did they use the built in stuff, if so how? and if not how do I do similar? How would I go about making my forms look so much better. Ive tried modifying the Styles parameter in many ways. Current code: final BasicEditField UserID = new BasicEditField( "User ID:", "example"); final

问题 I am writing an application in BlackBerry, where I want to do some custom painting at the top portion of the screen in the paint method of FullScreen and at the same time, I want a RichtextField positioned at the lower portion of the screen. I tried using setPosition methods in the Field class, but to no avail. So how do I set the position of the RichtextField that is added to the FullScreen class? 回答1: You can use a SpacerField for that purpose: class SpacerField extends Field { int

问题 I developed a Blackberry application using Eclipse. The application is working fine in the simulator. By using Blackberry desktop software, I tested the application in Blackberry mobile and it's working fine; but when I am using Progressbar screen, I am getting an error like this "Error starting Applicationname : Module 'ApplicationName' attempts to access a secure API." How do I avoid this error? 回答1: you need to sign your application. read this article. Blackberry application signing 来源：