Archived:Using createImage to mirror certain PNGs causes phone crash on S60 3rd Edition (Known Issue)

Comments

You say: certain PNGs. So it is not any PNG file but some special files with some special characteristics. Can you identify those files more precisely?

Could you please define the "crash"? Is is that the phone hits a wall, another phone or a moving car ? :) Or are we talking about a worm reset?

ltomuta

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This known issue was originally created by Ed welch and has been verified by Nokia Developer.

Article Metadata

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Tested with

Devices(s): All

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Compatibility

Platform(s): S60 3rd Edition

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Article

Created: ed_welch (03 Sep 2007)

Last edited: hamishwillee (28 Jun 2012)

Description

This problem only occurs with 8-bit PNG images with dimensions 31 x [an odd number of pixels] and have transparent pixels. It happens when you use Image.createImage to transform an image as follows:

  Image mirror = Image.createImage(image, 0, 0, 
        image.getWidth(), image.getHeight(), Sprite.TRANS_MIRROR);
        g.drawImage(mirror, 80, 80, Graphics.HCENTER|Graphics.TOP);

When you draw the image, it will be shown with the transparent pixels of the right-hand side replaced with white pixels. If you try drawing the image several times, the phone will eventually crash.

Solution

Do not use bitmaps with dimensions of 31 x [an odd number of pixels].