Android中使用RecyclerView实现下拉刷新和上拉加载

5：最重要的Activity的实现，MainActivity.java，代码含义已经注释

public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
//支持下拉刷新的ViewGroup
private PtrClassicFrameLayout mPtrFrame;
//List数据
private List<String> title = new ArrayList<>();
//RecyclerView自定义Adapter
private RvAdapter adapter;
//添加Header和Footer的封装类
private RecyclerAdapterWithHF mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView) findViewById(R.id.rv_list);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(layoutManager);
adapter = new RvAdapter(MainActivity.this, title);
mAdapter = new RecyclerAdapterWithHF(adapter);
mRecyclerView.setAdapter(mAdapter);
mPtrFrame = (PtrClassicFrameLayout) findViewById(R.id.rotate_header_list_view_frame);
//下拉刷新支持时间
mPtrFrame.setLastUpdateTimeRelateObject(this);
//下拉刷新一些设置 详情参考文档
mPtrFrame.setResistance(1.7f);
mPtrFrame.setRatioOfHeaderHeightToRefresh(1.2f);
mPtrFrame.setDurationToClose(200);
mPtrFrame.setDurationToCloseHeader(1000);
// default is false
mPtrFrame.setPullToRefresh(false);
// default is true
mPtrFrame.setKeepHeaderWhenRefresh(true);
//进入Activity就进行自动下拉刷新
mPtrFrame.postDelayed(new Runnable() {
@Override
public void run() {
mPtrFrame.autoRefresh();
}
}, 100);
//下拉刷新
mPtrFrame.setPtrHandler(new PtrDefaultHandler() {
@Override
public void onRefreshBegin(PtrFrameLayout frame) {
title.clear();
//模拟数据
for (int i = 0; i <= 5; i++) {
title.add(String.valueOf(i));
}
//模拟联网 延迟更新列表
new Handler().postDelayed(new Runnable() {
public void run() {
mAdapter.notifyDataSetChanged();
mPtrFrame.refreshComplete();
mPtrFrame.setLoadMoreEnable(true);
}
}, 1000);
}
});
//上拉加载
mPtrFrame.setOnLoadMoreListener(new OnLoadMoreListener() {
@Override
public void loadMore() {
//模拟联网延迟更新数据
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
//模拟数据
for (int i = 0; i <= 5; i++) {
title.add(String.valueOf(i));
}
mAdapter.notifyDataSetChanged();
mPtrFrame.loadMoreComplete(true);
Toast.makeText(MainActivity.this, "load more complete", Toast.LENGTH_SHORT)
.show();
}
}, 1000);
}
});
}
}

以上内容是小编给大家介绍的Android中使用RecyclerView实现下拉刷新和上拉加载教程，希望对大家有所帮助！