Hai all
I am trying an application like rotating image with motion sensor....My
problem is that the image does not rotate about centre properly....And my
angle range is 0 to 90 and 0 to -90..
And below is my code.....
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
Bitmap arrow =
BitmapFactory.decodeResource(getResources(),R.drawable.arrow);
int arrowW = arrow.getWidth();
int arrowH = arrow.getHeight();
float scaleWidth = 1;
float scaleHeight = 1;
int centrex = arrowW/2;
int centrey = arrowH/2;
int X=108;
int Y=100;
int angle=0;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
matrix.postRotate(angle, X+centrex , Y+centrey );
Bitmap resizedBitmap = Bitmap.createBitmap(arrow, 0, 0,
arrow.getWidth(), arrow.getHeight(), matrix, true);
canvas.save();
canvas.drawBitmap(resizedBitmap, X, Y, null);
invalidate();
}
I am getting the angle values from onCreate method.....Using orientation
sensor(roll values)..
But When I rotate the screen my image is rotating but not exactly around
the image centre.....
Thanks......
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