how to capture key status with j2me midp

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I'm studying J2ME and I have a problem in capturing key status in class GameCanvas.
When I write my own class, which extends from GameCanvas class, I want to know which key is pressed at a moment.
But I can use keyStates() method but I can't use keyPressed() method.
I search on the Internet and some people said that the problem is caused of my constructor, so I changed my constructor. First, I used statement super(false); and then I used super(true);. Unfortunately, both cases seem to be useless, keyPressed() method still can't get the key information.
Hope someone will give me a solution.
P/s: My compiler is Eclipse 3.5 Galileo

Posted 2-Nov-10 0:04am

Duc Huy Nguyen

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Fredrik Bornander · Answer 1 · 2010-11-02T06:00:00

Solution 1

You can have a look at this project, J2ME for beginners[^], it uses the keyPressed() and it works as expected.

Hope this helps,
Fredrik

Posted 2-Nov-10 6:00am

Fredrik Bornander

Duc Huy Nguyen · Answer 2 · 2010-11-02T19:01:00

I saw the article you gave carefully. In this example, the author used Canvas class and the code did well.
Now I'm using a GameCanvas class. GameCanvas extends from Canvas class, so everyone hopes keyPressed() still works. But, in my situation, this method doesn't work.
Anywway, thanks alot Fredrik

Fredrik Bornander · Answer 3 · 2010-11-02T22:29:00

Solution 3

Sorry, gave you the wrong link, try this[^] instead. It's part 2 of the tutorial and it uses the GameCanvas with working keyPressed.

Apologies for sending the wrong link,
Fredrik

Posted 2-Nov-10 22:29pm