IllegalArgumentException in getPixels() method

Question

I am setting this bitmap on canvas and getting this IllegalArgumentException while using getPixels() method:

java.lang.IllegalArgumentException: x + width must be <= bitmap.width() in the line

bitmap.getPixels(pixels, 0,bitmap.getWidth(), 1, 1, bitmap.getWidth(), bitmap.getHeight());

How to fix this?

Simple _bitmap.getWidth()_ returns _0_ – Piyush Jun 06 '16 at 07:58 — Piyush, Jun 06 '16 at 07:58
The bitmap.getWidth() returns a non-zero value. – zek54 Jun 06 '16 at 08:02 — zek54, Jun 06 '16 at 08:02

Senbazuru · Accepted Answer · 2016-08-10T08:15:48.800

the exception already tells you your error

x + width must be <= bitmap.width()

your x and y start at 1 instead of 0, so the method calculates x + width = (1+ width) which is out of bounds. set your x and y values to 0 or if you really want to skip the first pixel in each row and column set your bitmap.getWidth and bitmap.getHeight() to "bitmap.getWidth-1" and "bitmap.getHeight()-1".

for a better explanation see the doc

https://developer.android.com/reference/android/graphics/Bitmap.html#getPixels(int[], int, int, int, int, int, int)

IllegalArgumentException in getPixels() method

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