performance - Resize the images according screen resolution Android

Question

I have a background image in body. What I want to achieve is that:

1) - Calculate the visitor screen resolution.
2) - based on that resolution I want to resize my background image.

I know get the screen resolution as a

Display display = getWindowManager().getDefaultDisplay();
width_screen = display.getWidth();
height_screen = display.getHeight();

But I don't know how to resize the images according screen resolution of user.

Can anyone help? Thanks..

Answer 1

Put a ImageView in your layout file and set

    android:layout_width="match_parent"
    android:layout_height="match_parent"

If you want to keep the aspect use:

    android:scaleType="centerInside"

If you dont care about the aspect ratio use:

    android:scaleType="fitXY"