Android-PullToRefresh代码分析

github 地址：https://github.com/hgl888/Android-PullToRefresh

工程分为 library，PullToRefreshListFragment, PullToRefreshViewPage和LauncherActivity四部分，library是基础

其中PullToRefreshAdapterViewBase是基类，主要实现onScroll，onScrollStateChange，等操作

PullToRefreshListView继承PullToRefreshAdapterViewBase， 主要实现

setOnRefreshListener

setOnLastItemVisibleListener

等监听，同时还可以根据状态类型，添加声音声音事件，代码如下：

/**

* Add Sound Event Listener

*/

SoundPullEventListener<ListView> soundListener = new SoundPullEventListener<ListView>(this);

soundListener.addSoundEvent(State.PULL_TO_REFRESH, R.raw.pull_event);

soundListener.addSoundEvent(State.RESET, R.raw.reset_sound);

soundListener.addSoundEvent(State.REFRESHING, R.raw.refreshing_sound);

mPullRefreshListView.setOnPullEventListener(soundListener);

app  从 LauncherActivity启动，通过ListAdapter添加到界面中