PullToRefresh

最新推荐文章于 2025-06-02 16:12:03 发布

原创最新推荐文章于 2025-06-02 16:12:03 发布 · 189 阅读

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CC 4.0 BY-SA版权

本文介绍了一个使用 PullToRefreshListView 控件实现上下拉刷新功能的 Android 应用示例。该示例通过自定义适配器加载数据，并演示了如何设置刷新模式及监听刷新事件。

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//控件

<com.handmark.pulltorefresh.library.PullToRefreshListView
    android:id="@+id/pull_refresh_list"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:cacheColorHint="#00000000"
    android:divider="#19000000"
    android:dividerHeight="4dp"
    android:fadingEdge="none"
    android:fastScrollEnabled="false"
    android:footerDividersEnabled="false"
    android:headerDividersEnabled="false"
    android:smoothScrollbar="true" />

package com.example.pullto;

import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.google.gson.Gson;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

import java.util.Date;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private PullToRefreshListView pi;
    private List<JBean.DataBean> data;
    private Handler handler = new Handler();
    private Shipei shipei;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        pi = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
        pi.setMode(PullToRefreshBase.Mode.BOTH);
        shuju();
        pi.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
            //下啦
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
                data.clear();
                shuju();
            }
            //上拉
            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                la();
            }
        });
    }
    public void shuju(){
        new Thread(){
            @Override
            public void run() {
                super.run();
                final String getjson = Qinqiu.getjson();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Gson gson = new Gson();
                        JBean jBean = gson.fromJson(getjson, JBean.class);
                        data = jBean.data;
                        shipei = new Shipei();
                        pi.setAdapter(shipei);
                        pi.onRefreshComplete();
                    }
                });
            }
        }.start();
    }

    public void la(){
        new Thread(){
            @Override
            public void run() {
                super.run();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        data.addAll(data);
                        shipei.notifyDataSetChanged();
                        pi.onRefreshComplete();
                    }
                });
            }
        }.start();
    }
    class Shipei extends BaseAdapter{

        @Override
        public int getCount() {
            return data.size();
        }

        @Override
        public Object getItem(int i) {
            return data.get(i);
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

        @Override
        public View getView(int i, View view, ViewGroup viewGroup) {
            view = View.inflate(MainActivity.this,R.layout.tian,null);
            TextView tv = view.findViewById(R.id.tv);
            tv.setText(data.get(i).title);
            return view;
        }
    }
}