Java Development

[Sakberry]

Hi

i am working on the torch simulator. the getwidth method return 360 which i know is correct but the getwidth returns 1073741823. Isnt it supposed to return 480??

can anyone tell me why does this happen and how can i resolve it?

Thanks

[mtatro]

In my experience this generally happens on controls that have not been laid out yet. If you want the height of the screen, not the control, then call Display.getHeight()

[jkoorts]

yup thats the value of the height of the field BEFORE layout. call childlayout(field, getPreferredWidth(), getPreferredHeight())  then check the height again - it should be something more sensible.

Note you have to override getPreferredWith() and getPreferredHeight() as well

[sonicboomboy]

well, if you manager has USE_ALL_HEIGHT style, then it might return that value.

[arkadyz · Accepted solution]

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Sakberry wrote:

Hi

i am working on the torch simulator. the getwidth method return 360 which i know is correct but the getwidth returns 1073741823. Isnt it supposed to return 480??

can anyone tell me why does this happen and how can i resolve it?

Thanks

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You are asking the wrong question. The question you should be asking is "Where can I fit the field which is 0x3FFFFFFF=Integer.MAX_VALUE >> 1 high?" Of course, not anywhere on the screen. So what entity might think it's got that much height available for displaying something? And the answer is "A vertically scrolling manager". Where did you get that manager from? Read this knowledge base article to find out:

MainScreen explained

So there is either nothing to "resolve" (because it's not a problem - it is a perfectly valid behaviour) or a simple NO_VERTICAL_SCROLL flag to add to your MainScreen.

[sonicboomboy]

@arkadyz
great explanation, man!

[swap_chau]

I think you can use getHeight(). It will only work if the button is already drawn.