SwipeRefreshLayout 下拉刷新-优快云博客

本文链接：https://blog.youkuaiyun.com/Cc_Rain0624/article/details/52188387

本文介绍如何使用SwipeRefreshLayout实现Android应用中的下拉刷新功能。包括配置颜色方案、设置监听器及刷新状态的方法，并通过示例代码展示具体实现过程。

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android已经集成了一个下拉刷新控件直接调用方便甚多。

SwipeRefreshLayout：主要属性调用
1.setColorSchemeResources 设置四个颜色在刷新时切换的颜色数组之前的旧版本是在顶部以颜色线条的展现形式加载现在改为旋转图标 PS：setColorScheme()已弃用改用setColorSchemeResources()
2.setOnRefreshListener 设置刷新时的监听事件
3.setRefreshing(true/false) 设置是否处于刷新状态

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="cc.listviewup.MainActivity">

<android.support.v4.widget.SwipeRefreshLayout
    android:id="@+id/id_swipe_ly"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<ListView
    android:id="@+id/listview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"></ListView>
</android.support.v4.widget.SwipeRefreshLayout>

</RelativeLayout>

package cc.listviewup;

import android.os.Handler;
import android.os.Message;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SwitchCompat;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;

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

public class MainActivity extends AppCompatActivity{

    private ListView flashListView;
    private SwipeRefreshLayout swipeRefreshLayout;
    private static final int REFRESH_COMPLETE = 0X110;
    private ArrayAdapter<String> listAdapter;
    private List<String> datas=new ArrayList<String>(Arrays.asList("1111", "2222", "3333", "4444", "5555"));
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        flashListView=(ListView) findViewById(R.id.listview);
        swipeRefreshLayout=(SwipeRefreshLayout)findViewById(R.id.id_swipe_ly);
        swipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_light, android.R.color.holo_red_light, android.R.color.holo_orange_light, android.R.color.holo_green_light);

        listAdapter=new ArrayAdapter<String>(this,R.layout.support_simple_spinner_dropdown_item,datas);

        flashListView.setAdapter(listAdapter);


        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                handler.sendEmptyMessageDelayed(REFRESH_COMPLETE,2000);
            }
        });
    }

    private Handler handler=new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what){
                case REFRESH_COMPLETE:
                    datas.addAll(0,Arrays.asList("1111","22222","3333"));
                    listAdapter.notifyDataSetChanged();
                    swipeRefreshLayout.setRefreshing(false);
                    break;
            }
        }
    };


}