-
自定义View学习
作者：BakerJQ
项目地址：
https://github.com/BakerJQ/Android-InfiniteCards
效果：
使用
build.gradle中引用
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
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) {
}
});
https://mp.weixin.qq.com/s/zbZJwDMqr0kRfAo4I-IVxw
