MyLayoutAnimationHelper.java 文件源码

/**
 * 从左侧进入，并带有弹性的动画
 *
 * @return
 */
public static AnimationSet getAnimationSetFromLeft() {
    AnimationSet animationSet = new AnimationSet(true);
    TranslateAnimation translateX1 = new TranslateAnimation(RELATIVE_TO_SELF, -1.0f, RELATIVE_TO_SELF, 0.1f,
            RELATIVE_TO_SELF, 0, RELATIVE_TO_SELF, 0);
    translateX1.setDuration(300);
    translateX1.setInterpolator(new DecelerateInterpolator());
    translateX1.setStartOffset(0);

    TranslateAnimation translateX2 = new TranslateAnimation(RELATIVE_TO_SELF, 0.1f, RELATIVE_TO_SELF, -0.1f,
            RELATIVE_TO_SELF, 0, RELATIVE_TO_SELF, 0);
    translateX2.setStartOffset(300);
    translateX2.setInterpolator(new DecelerateInterpolator());
    translateX2.setDuration(50);

    TranslateAnimation translateX3 = new TranslateAnimation(RELATIVE_TO_SELF, -0.1f, RELATIVE_TO_SELF, 0f,
            RELATIVE_TO_SELF, 0, RELATIVE_TO_SELF, 0);
    translateX3.setStartOffset(350);
    translateX3.setInterpolator(new DecelerateInterpolator());
    translateX3.setDuration(50);

    AlphaAnimation alphaAnimation = new AlphaAnimation(0.5f, 1.0f);
    alphaAnimation.setDuration(400);
    alphaAnimation.setInterpolator(new AccelerateDecelerateInterpolator());


    animationSet.addAnimation(translateX1);
    animationSet.addAnimation(translateX2);
    animationSet.addAnimation(translateX3);
    //animationSet.addAnimation(alphaAnimation);
    animationSet.setDuration(400);

    return animationSet;
}