Animates a component (using pre-defined animation kinds). - Android Animation

Android examples for Animation:Animation Creation

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Description

Animates a component (using pre-defined animation kinds).

Demo Code

// Copyright 2009-2011 Google, All Rights reserved
//package com.java2s;

import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.TranslateAnimation;

public class Main {
    /**//  w ww  .  j  a  va 2s.c  om
     * Animates a component (using pre-defined animation kinds).
     *
     * @param view  component to animate
     * @param animation  animation kind
     */
    public static void ApplyAnimation(View view, String animation) {
        // TODO(user): These string constants need to be extracted and defined somewhere else!
        // TODO(user): Also, the endless else-if is inefficient
        if (animation.equals("ScrollRightSlow")) {
            ApplyHorizontalScrollAnimation(view, false, 8000);
        } else if (animation.equals("ScrollRight")) {
            ApplyHorizontalScrollAnimation(view, false, 4000);
        } else if (animation.equals("ScrollRightFast")) {
            ApplyHorizontalScrollAnimation(view, false, 1000);
        } else if (animation.equals("ScrollLeftSlow")) {
            ApplyHorizontalScrollAnimation(view, true, 8000);
        } else if (animation.equals("ScrollLeft")) {
            ApplyHorizontalScrollAnimation(view, true, 4000);
        } else if (animation.equals("ScrollLeftFast")) {
            ApplyHorizontalScrollAnimation(view, true, 1000);
        } else if (animation.equals("Stop")) {
            view.clearAnimation();
        }
    }

    private static void ApplyHorizontalScrollAnimation(View view,
            boolean left, int speed) {
        float sign = left ? 1f : -1f;
        AnimationSet animationSet = new AnimationSet(true);
        animationSet.setRepeatCount(Animation.INFINITE);
        animationSet.setRepeatMode(Animation.RESTART);

        TranslateAnimation move = new TranslateAnimation(
                Animation.RELATIVE_TO_PARENT, sign * 0.70f,
                Animation.RELATIVE_TO_PARENT, sign * -0.70f,
                Animation.RELATIVE_TO_PARENT, 0,
                Animation.RELATIVE_TO_PARENT, 0);
        move.setStartOffset(0);
        move.setDuration(speed);
        move.setFillAfter(true);
        animationSet.addAnimation(move);
        view.startAnimation(animationSet);
    }
}

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