CODEWITHSUNDEEP
java-mecolorspixel
Kermia
Kermia

Reputation: 4221

How to get a pixel color in J2ME?

I have drawn a canvas and i want to know how to get a pixel color of the canvas ?

Upvotes: 1

Views: 1372

Answers (3)

funkybro
funkybro

Reputation: 8671

Create a mutable Image the same size as your Canvas. Then, any operations you perform on your Canvas's Graphics object, perform the same ones on your Image's Graphics object.

Finally, get the pixel data from the Image using getRGB(); it should be the same as the Canvas.

Upvotes: 1

Gorkem Ercan
Gorkem Ercan

Reputation: 3226

If you are targeting a platform that supports the NokiaUI API you can use the DirectGraphics#getPixels to read pixel data. On mobile platforms with graphics accelerator hardware, reading pixels tend to be slower so you should use this very sparingly.

Upvotes: 1

Malcolm
Malcolm

Reputation: 41510

Unfortunately, you can't. Graphics class, which is used to draw to Canvas, is for painitng only, it can't give you any information on the pixels.

Upvotes: 1

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