Rotate a saved bitmap in android

Question

I am saving an image from the camera that was in landscape mode. so it gets saved in landscape mode and then i apply an overlay onto it that too is in landscape mode. I want to rotate that image and then save. e.g. if i have this

I want to rotate clockwise by 90 degrees once and make it this and save it to sdcard:

How is this to be accomplished?

Answer 1

void rotate(float x)
    {
        Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),R.drawable.tedd);

        int width = bitmapOrg.getWidth();

        int height = bitmapOrg.getHeight();


        int newWidth = 200;

        int newHeight  = 200;

        // calculate the scale - in this case = 0.4f

         float scaleWidth = ((float) newWidth) / width;

         float scaleHeight = ((float) newHeight) / height;

         Matrix matrix = new Matrix();

         matrix.postScale(scaleWidth, scaleHeight);
         matrix.postRotate(x);

         Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0,width, height, matrix, true);

         iv.setScaleType(ScaleType.CENTER);
         iv.setImageBitmap(resizedBitmap);
    }

Answer 2

Check this

public static Bitmap rotateImage(Bitmap src, float degree) 
{
        // create new matrix
        Matrix matrix = new Matrix();
        // setup rotation degree
        matrix.postRotate(degree);
        Bitmap bmp = Bitmap.createBitmap(src, 0, 0, src.getWidth(), src.getHeight(), matrix, true);
        return bmp;
}