Make activity animate from top to bottom

Question

I am writing an Android app where I want the activity to appear by animating in from the bottom of the screen to the top. I am able to do this with code from here:

Answer 1

In your main xml file. Add id of the root tag and pass this to function. like

/** The Constant ANIM_NO. */
public static final int ANIM_NO = 0;

public static void topToDown(Context context, View target, int type,
        int duration) {

    if (type == UtilityAnimations.ANIM_NO) {
        UtilityAnimations.topToDown(context, target, duration);
    } else {
        final Animation animation = new TranslateAnimation(
                Animation.RELATIVE_TO_SELF, 0.0f,
                Animation.RELATIVE_TO_SELF, 0.0f,
                Animation.RELATIVE_TO_SELF, -1.0f,
                Animation.RELATIVE_TO_SELF, 0.0f);
        animation.setDuration(duration != 0 ? duration
                : UtilityAnimations.DURATION_MEDIAM);
        animation.setInterpolator(UtilityAnimations.getInterpolator(
                context, type));
        target.startAnimation(animation);
    }
}