可自定义动效的卡片切换视图安卓源码

可自定义动效的卡片切换视图

截屏

Gradle引用

compile 'com.bakerj:infinite-cards:1.0.1'

参数

• animType : 动效展示类型
  • front : 将点击的卡片切换到第一个
  • switchPosition : 将点击的卡片和第一张卡片互换位置
  • frontToLast : 将第一张卡片移到最后，后面的卡片往前移动一个
• cardRatio : 卡片宽高比
• animDuration : 卡片动效时间
• animAddRemoveDelay : 卡片组切换时，添加与移出时，相邻卡片展示动效的间隔时间
• animAddRemoveDuration : 卡片组切换时，添加与移出时，卡片动效时间

使用

xml布局

<com.bakerj.infinitecards.InfiniteCardView
        android:id="@+id/view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        infiniteCard:animDuration="1000"
        infiniteCard:cardRatio="1"/>

设置Adapter

直接继承BaseAdapter

class MyAdapter extends BaseAdapter{
  ...
}
mAdapter = new MyAdapter(resId);
mCardView.setAdapter(mAdapter);

动效的转换和插值

默认

默认情况下可以不设置，或者设置为各种Default

mCardView.setAnimInterpolator(new LinearInterpolator());
mCardView.setTransformerToFront(new DefaultTransformerToFront());
mCardView.setTransformerToBack(new DefaultTransformerToBack());
mCardView.setZIndexTransformerToBack(new DefaultZIndexTransformerCommon());

自定义

通过设置转换器与插值器，根据回调中的参数自定义动画效果

mCardView.setTransformerToBack(new AnimationTransformer() {
    @Override
    public void transformAnimation(View view, float fraction, int cardWidth, int cardHeight, int fromPosition, int toPosition) {
        int positionCount = fromPosition - toPosition;
        float scale = (0.8f - 0.1f * fromPosition) + (0.1f * fraction * positionCount);
        ViewHelper.setScaleX(view, scale);
        ViewHelper.setScaleY(view, scale);
        if (fraction < 0.5) {
            ViewCompat.setRotationX(view, 180 * fraction);
        } else {
            ViewCompat.setRotationX(view, 180 * (1 - fraction));
        }
    }

    @Override
    public void transformInterpolatedAnimation(View view, float fraction, int cardWidth, int cardHeight, int fromPosition, int toPosition) {
        int positionCount = fromPosition - toPosition;
        float scale = (0.8f - 0.1f * fromPosition) + (0.1f * fraction * positionCount);
        ViewHelper.setTranslationY(view, -cardHeight * (0.8f - scale) * 0.5f - cardWidth * (0.02f *
                fromPosition - 0.02f * fraction * positionCount));
    }
});
mCardView.setZIndexTransformerToBack(new ZIndexTransformer() {
    @Override
    public void transformAnimation(CardItem card, float fraction, int cardWidth, int cardHeight, int fromPosition, int toPosition) {
        if (fraction < 0.4f) {
            card.zIndex = 1f + 0.01f * fromPosition;
        } else {
            card.zIndex = 1f + 0.01f * toPosition;
        }
    }

    @Override
    public void transformInterpolatedAnimation(CardItem card, float fraction, int cardWidth, int cardHeight, int fromPosition, int toPosition) {

    }
});

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