Android中用SmartRefreshLayout实现ListView列表的数据刷新与加载更多（总结）

这里用到的是第三方插件：SmartRefreshLayout

效果图如下：

使用步骤如下：

1、添加远程依赖

/*刷新和加载*/
implementation 'com.scwang.smartrefresh:SmartRefreshLayout:1.1.0-alpha-14'
implementation 'com.scwang.smartrefresh:SmartRefreshHeader:1.1.0-alpha-14'//没有使用特殊Header，可以不加这行

2、如何在布局文件中使用，代码如下：

（备注：SmartRefreshLayout分为三块：Header布局，Content布局，Footer布局。其中，Content内容布局必须是一个整体。例如，下面的布局包括图片，文字，列表等等，用一个ScrollView包起来。）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:orientation="horizontal"
        android:background="@color/colorAccent">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="标题栏"
            android:textSize="18dp"
            android:textStyle="bold"
            android:layout_centerInParent="true"/>

    </RelativeLayout>

    <com.scwang.smartrefresh.layout.SmartRefreshLayout
        android:id="@+id/Main_SRLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#444444"
        app:srlPrimaryColor="#444444"
        app:srlAccentColor="@android:color/white"
        app:srlEnablePreviewInEditMode="true">

        <com.scwang.smartrefresh.layout.header.ClassicsHeader
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

        <ScrollView
            android:id="@+id/Main_scrollView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"
                android:background="@color/colorWhite">

                <TextView
                    android:id="@+id/Main_tvRefreshInfo"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:visibility="gone"
                    android:text="你好"/>

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="150dp"
                    android:scaleType="fitXY"
                    android:src="@mipmap/corporation_detailinfo_topbg"/>

                <com.deepreality.smartrefreshlayoutdemo.ListViewNesting
                    android:id="@+id/Main_lvNewsList"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"></com.deepreality.smartrefreshlayoutdemo.ListViewNesting>

            </LinearLayout>

        </ScrollView>

        <com.scwang.smartrefresh.layout.footer.ClassicsFooter
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:srlAccentColor="@color/colorWhite"/>

    </com.scwang.smartrefresh.layout.SmartRefreshLayout>

</LinearLayout>

3、布局文件知道怎么用了，下面说一下如何在Activity中使用，代码如下：

其实分为以下几步即可：

(1) 实现OnRefreshListener和OnLoadMoreListener接口方法。（刷新和加载）

(2) 给smartRefreshLayout添加监听事件。

(3) 调用finishRefresh()以及finishLoadMore()结束刷新和加载过程动画。

package com.deepreality.smartrefreshlayoutdemo;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

import com.scwang.smartrefresh.layout.SmartRefreshLayout;
import com.scwang.smartrefresh.layout.api.RefreshLayout;
import com.scwang.smartrefresh.layout.listener.OnLoadMoreListener;
import com.scwang.smartrefresh.layout.listener.OnRefreshListener;

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

public class MainActivity extends AppCompatActivity implements OnRefreshListener, OnLoadMoreListener {

    private Context mContext;

    private SmartRefreshLayout smartRefreshLayout;
    private TextView tvRefreshInfo;
    private ListViewNesting lvNewsList;
    private ScrollView scrollView;

    private List<Tb_Organization> tbOrganizationList;
    private List<Tb_Organization> tempTbOrganizationList;
    private Tb_Organization tb_organization;
    private OrganizationListAdapter organizationListAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        baseDataInit();
        bindViews();
        viewsAddListener();
        viewsDataInit();

        scrollView.smoothScrollTo(0, 0);
    }

    private void baseDataInit() {
        mContext = this;
        tb_organization = null;
        tbOrganizationList = new ArrayList<>();
        tempTbOrganizationList = new ArrayList<>();
    }

    private void bindViews() {
        smartRefreshLayout = findViewById(R.id.Main_SRLayout);
        tvRefreshInfo = findViewById(R.id.Main_tvRefreshInfo);
        lvNewsList = findViewById(R.id.Main_lvNewsList);
        scrollView = findViewById(R.id.Main_scrollView);
    }

    private void viewsAddListener() {
        smartRefreshLayout.setOnRefreshListener(this);
        smartRefreshLayout.setOnLoadMoreListener(this);
    }

    private void viewsDataInit() {
        newsListDataRefresh();
    }

    private void newsListDataRefresh() {
        tbOrganizationList.clear();
        for (int i = 0; i < 10; i ++) {
            tb_organization = new Tb_Organization();
            tbOrganizationList.add(tb_organization);
        }
        organizationListAdapter = new OrganizationListAdapter(mContext, tbOrganizationList);
        lvNewsList.setAdapter(organizationListAdapter);
    }

    private void newsListDataLoadMore() {
        for (int i = 0; i < 10; i ++) {
            tb_organization = new Tb_Organization();
            tbOrganizationList.add(tb_organization);
        }
        organizationListAdapter.notifyDataSetChanged();
    }

    @Override
    public void onLoadMore(@NonNull RefreshLayout refreshLayout) {
        newsListDataLoadMore();
        smartRefreshLayout.finishLoadMore();
        Toast.makeText(mContext, "没有更多数据了！", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onRefresh(@NonNull RefreshLayout refreshLayout) {
        newsListDataRefresh();
        smartRefreshLayout.finishRefresh();
        Toast.makeText(mContext, "刷新完成！", Toast.LENGTH_SHORT).show();
    }
}