QuickAF中的下拉刷新

{% asset_img RefreshLayout.png %}

QuickAF使用RefreshLayout控件进行下拉刷新和上拉加载，通过在布局中定义app:ptr_content和app:ptr_empty或api中设置内容layout和错误view。 RefreshLayout的特点如下：

• 支持任意Layout的下拉刷新和上拉加载，默认支持VScrollView,RecyclerView, ListView, GridView上拉/下拉，还可以通过registerDetector来支持更多的Layout;
• 支持自定义EmptyView，一个EmptyView包含loading, empty, error三个子view
• 支持empty view的下拉刷新
• 支持FooterView，FooterView一般在Adapter中定义

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使用示例

请参考QuickAF中的BaseListFragment.java

public abstract class BaseListFragment<T> extends BaseFragment implements RefreshLayout.OnRefreshListener {
    protected RefreshLayout mRefreshLayout;
    protected RefreshRecyclerHelper mRefreshHelper;
    protected RecyclerView mListView;
    protected AfRecyclerAdapter<T> mAdapter;

    @Override
    protected int getContentLayout() {
        return R.layout.base_refresh_recycler;
    }

    @Override
    protected void initContentView(View view) {
        super.initContentView(view);

        mRefreshLayout = (RefreshLayout) view.findViewById(R.id.refresh);
        mRefreshLayout.setOnRefreshListener(this);
        mRefreshLayout.setMode(RefreshLayout.REFRESH_MODE_BOTH);
        mListView = (RecyclerView) mRefreshLayout.findViewById(R.id.rv);

        mRefreshHelper = generateRefreshHelper();
        mAdapter = generateAdapter();
        mRefreshHelper.setAdapter(mAdapter);
    }

    @Override
    public void onRefresh() {
        load(false);
    }

    @Override
    public void onLoadMore() {
        load(false);
    }

    protected void load(boolean needCache) {
    }

    protected RefreshRecyclerHelper generateRefreshHelper() {
        AppRefreshRecyclerHelper helper = new AppRefreshRecyclerHelper(mRefreshLayout);
        return helper;
    }

    protected abstract AfRecyclerAdapter<T> generateAdapter();
}

布局 ```xml base_refresh_recycler.xml <?xml version="1.0" encoding="utf-8"?>

ptr_content布局
```xml base_rv.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/rv"
    style="@style/base_rv">

</android.support.v7.widget.RecyclerView>

关于

QuickAF是一个Android平台上的app快速开发框架，欢迎读者在github star或fork。本人写作水平有限，欢迎广大读者指正，如有问题，可与我直接联系或在我的官方博客中给出评论。

参考

QuickAF: https://github.com/Jamling/QuickAF