Android 固定头部的ListView以及下拉刷新(附源码)

先上图

前言：由于这段时间项目中需要用到这个功能，所以在此小计，以便以后方便查看

实现的原理很简单，就是给ListView设置一个HeanderView，当ListView数据第一行在顶部的时候，将HeanderView视图显示就行。

所以我们需要建立俩个HanderView的xml

第一个HeaderView布局listview_headerview1.xml

第二个HeaderView布局listview_headerview2.xml

则主布局代码如下

PS：主布局需要使用RL布局，不然往上滑动时，会影响视觉效果 。

接下来就是逻辑代码。

思路如下：给ListView设置俩个HeaderView,--------->当滑动ListView到顶部时显示固定头部视图，否则就隐藏。这里需要注意的是，PullToRefreshListView是一个重写的LinearLayout，所以我们需要获取他内部嵌套的ListView，代码如下

ListView listView = pullToRefreshListView.getRefreshableView();

当然你可以将PullToRefreshListView换成ListView，则不需要上面的代码

添加HeaderView代码

listView.addHeaderView(headerview1);
        listView.addHeaderView(headerview2);

拖动ListView判断代码

 pullToRefreshListView.setOnScrollListener(new AbsListView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {

            }

            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                headerview_in.setVisibility(firstVisibleItem >=2 ? View.VISIBLE : View.GONE);
            }
        });

下拉刷新以及全部代码我贴在下面，可以自己好好研究，不懂可以留言或者下载源码(源码在博客最后)

package com.pengguichu.testlistheaderview;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private PullToRefreshListView pullToRefreshListView;
    private View headerview_in;
    private View headerview1;
    private View headerview2;
    private List data;
    private int a=10;
    private int b;
    private MyAdapter myAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        data = new ArrayList<>();
        headerview_in = findViewById(R.id.listview_headerview2);
        pullToRefreshListView = (PullToRefreshListView) findViewById(R.id.listview);
        headerview1 = View.inflate(this, R.layout.listview_headerview1, null);
        headerview2 = View.inflate(this, R.layout.listview_headerview2, null);
        ListView listView = pullToRefreshListView.getRefreshableView();
        listView.addHeaderView(headerview1);
        listView.addHeaderView(headerview2);
        pullToRefreshListView.setOnScrollListener(new AbsListView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {

            }

            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
                headerview_in.setVisibility(firstVisibleItem >=2 ? View.VISIBLE : View.GONE);
            }
        });
        pullToRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener() {
            @Override
            public void onRefresh(PullToRefreshBase refreshView) {
                b=0;
                a=10;
                data.clear();
                initData();
                myAdapter.initData(data);
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            Thread.sleep(2000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        Message msg = new Message();
                        msg.what = 1;
                        handler.sendMessage(msg);
                    }
                }).start();

            }
        });
        pullToRefreshListView.setOnLastItemVisibleListener(new PullToRefreshBase.OnLastItemVisibleListener() {
            @Override
            public void onLastItemVisible() {
                b=a;
                a=a+10;
                initData();
                myAdapter.initData(data);
            }
        });
        initData();
        myAdapter = new MyAdapter(data,getApplicationContext());
        pullToRefreshListView.setAdapter(myAdapter);
    }
    //刷新数据
    private void initData(){
        for(int i=b;i

源码下载点击这里

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