Android: How can I resize an image to be automatically fitted with the View

I have png floor map images. I am using the below code to set the default image size to fit with the view.

imageView is the view inside my ImageSwitcher:

imageView.setImageMatrix(开发者_Go百科createDefaultMatrix());

private Matrix createDefaultMatrix() {
    Matrix matrix = new Matrix();
    matrix.setValues(new float[]{1.136f, 0.0f, -17.204117f,0.0f, 1.136f, 66.24078f,0.0f, 0.0f, 1.0f});
    matrix.postScale(1.1085271f, 1.1085271f, 198.08646f, 304.4192f);
    return matrix;
}

If you have notice, I am using fix values just to fit the image with the view.

Any guidance on how to do it automatically fitted against its View is appreciated.

---

why don't you scale images? try CENTER_INSIDE