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Problem with getImage

asked 2010-01-05 07:22:10 +0800

andij62 gravatar image andij62
301 1 6

Hallo all,

if i check a Button whether it has an image with follow code

if (bt.getImage().equals("/img/xxx.png"))
...

and the Button has no Image set then occurs an error "NullPointerException".

Any idea whats wrong?

Best Regards

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answered 2010-01-05 09:35:47 +0800

mjablonski gravatar image mjablonski
1284 3 5
http://www.jease.org/

Simple trick:

"/img/xxx.png".equals(bt.getImage())

Explanation: if getImage() delivers null (as no image is attached with the button), there's no #equals() defined on null (nor any other method). Turning the order around your comparing your string to (maybe) null, which is false.

HTH, Maik

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Asked: 2010-01-05 07:22:10 +0800

Seen: 294 times

Last updated: Jan 05 '10

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