How do you find out the scale of an graphics matrix in Android

float[] f = new float[9];
matrix.getValues(f);

float scaleX = f[Matrix.MSCALE_X];
float scaleY = f[Matrix.MSCALE_Y];

will probably be what you are looking for. the values given will be as followed:

0 : Scale X

1 : Skew X

2 : Translate X

3 : Scale Y

4 : Skew Y

5 : Translate Y

6 : Perspective 0

7 : Perspective 1

8 : Perspective 2

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