Place 3 buttons in a LinearLayout to occupy equal amount of space

Question

i would like to have three buttons taking equal amount of available space horizontally in a row. I used android:layout_gravity. What is the problem?

layout

Answer 1

I have make it pragmatically without weight

 float width = CommonUtills.getScreenWidth(activity);
    int cardWidth = (int) CommonUtills.convertDpToPixel(((width) / 3), activity);

    LinearLayout.LayoutParams params =
        new LinearLayout.LayoutParams(cardWidth,
            LinearLayout.LayoutParams.MATCH_PARENT);

    btnOne.setLayoutParams(params);
    btnTwo.setLayoutParams(params);
    btnThree.setLayoutParams(params);

    public class CommonUtills {
        public static float getScreenWidth(Context context) {
            float width = (float) 360.0;
            DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
            width = displayMetrics.widthPixels / displayMetrics.density;
            return width;
        }
    }