While rotating an image its changing the actual position of the image

Question

I tried to rotate the bitmap using Matrix , its working fine if the angle is 90degrees other than 90 degrees the bitmap position is getting changed.

Code Snippet:

            Matrix matrix = new Matrix();
            matrix.postRotate(90);
            Bitmap map= Bitmap.createBitmap(resizedBitmap, 0, 0,resizedBitmap.getWidth(), resizedBitmap.getHeight(),matrix, true);

can you guys tell me how to rotate the image without changing position of the image?

Thanks.

Answer 1

Hii if you are using ImageView I would suggest to set the matrix for ImageView rather than creating a new bitmap everytime something like this

              Matrix matrix=new Matrix();
     img.setScaleType(ScaleType.MATRIX);   
     int height =  img.arrow.getHeight();
        int width =  img.arrow.getWidth();
    matrix.postRotate((float) angle, width/2,height/2);
     img.setImageMatrix(matrix);