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stackpagetransformer's Introduction

ViewPager撸成栈

最近有看到一些栈式列表的效果,突然发现ViewPager也能做到较为简易的效果,实在是迫不及待。

效果图

这还是你熟悉的ViewPager么?

stack

使用

很简单就一个类 —— StackPageTransformer.

没有打成jar包,使用时直接复制源码即可:StackPageTransformer

// 默认配置
mViewPager.setPageTransformer(true, new StackPageTransformer(mViewPager));

// 或
mViewPager.setPageTransformer(true, new StackPageTransformer(mViewPager, 0.8f, 0.9f, 5));
0.8f -> // 栈底: 最小页面缩放比
0.9f -> // 栈顶: 最大页面缩放比
5    -> // 栈内页面数

实现

主要依赖ViewPager.PageTransformer.transformPage(View view, float position).

其中的position落在0~mStackCount-1时,进行相应的位移,从而堆成栈的效果.

还有一些渐变过渡的处理比较繁琐,有兴趣的话自行看代码吧.

灵感来源

官方教程 —— Depth Page Transformer

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stackpagetransformer's Issues

StackFromTop

How implement StackPageTransformer from Top? Thanks.

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