PullToRefreshRecyclerView——帶上拉刷新下拉加載功能的RecyclerView

2019-11-09 15:47:25

字體：大中小

來源：轉(zhuǎn)載

供稿：網(wǎng)友

現(xiàn)在ListView和GridView逐漸被RecyclerView替代，之前基于ListView和GridView的刷新加載框架也已經(jīng)過時，這里介紹基于RecyclerView的刷新加載框架——PullToRefreshRecyclerView，先看效果。

這里寫圖片描述

1. 在Module下的build.gradle中添加依賴

compile 'com.androidkun:pulltorefreshrecyclerview:1.0.4'

2. 在布局文件中添加PullToRefreshRecyclerView控件

<com.androidkun.PullToRefreshRecyclerView android:id="@+id/pullToRefreshRV" android:layout_width="match_parent" android:layout_height="match_parent"/>

3. 初始化PullToRefreshRecyclerView并設(shè)置屬性和回調(diào)

pullToRefreshRV = (PullToRefreshRecyclerView) findViewById(R.id.pullToRefreshRV); LinearLayoutManager layoutManager = new LinearLayoutManager(this); layoutManager.setOrientation(LinearLayoutManager.VERTICAL); pullToRefreshRV.setLayoutManager(layoutManager); adapter = new ModeAdapter(this, R.layout.item_mode,data); pullToRefreshRV.setAdapter(adapter); //設(shè)置是否顯示上次刷新的時間 pullToRefreshRV.displayLastRefreshTime(true); //設(shè)置刷新回調(diào) pullToRefreshRV.setPullToRefreshListener(this); //主動觸發(fā)下拉刷新操作 //pullToRefreshRV.onRefresh();

如果想使用網(wǎng)格列表，則相應(yīng)設(shè)置布局管理者為網(wǎng)格布局管理者就行了

GridLayoutManager gridLayoutManager = new GridLayoutManager(this,2); recyclerView.setLayoutManager(gridLayoutManager);

此外也可以通過 setRefreshingResource（int resId）和setLoadMoreResource（int resId）自定義刷新箭頭和加載的圖標(biāo)。

4.處理刷新加載邏輯

@Override public void onRefresh() { pullToRefreshRV.postDelayed(new Runnable() { @Override public void run() { pullToRefreshRV.setRefreshComplete(); //模擬沒有數(shù)據(jù)的情況 data.clear(); adapter.notifyDataSetChanged(); } }, 3000); } @Override public void onLoadMore() { pullToRefreshRV.postDelayed(new Runnable() { @Override public void run() { pullToRefreshRV.setLoadMoreComplete(); //模擬加載數(shù)據(jù)的情況 int size = data.size(); for (int i = size; i < size + 4; i++) { data.add("" + i + i + i + i); } adapter.notifyDataSetChanged(); } }, 3000); }

框架中提供封裝好的BaseAdapter，減少編寫相同的代碼，提高開發(fā)效率，Demo中的ModeAdapter就是繼承了BaseAdapter，代碼如下：

public class ModeAdapter extends BaseAdapter { public ModeAdapter(Context context, int layoutId, List datas) { super(context, layoutId, datas); } @Override public void convert(ViewHolder holder, Object o) { holder.setText(R.id.textView, (String) o); }}

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