SmartRefreshLayout 和recycleview下拉刷新

SmartRefreshLayout 和recycleview下拉刷新

step1:

package com.example.myapplication9;


import android.app.Application;
import android.content.Context;

import com.scwang.smart.refresh.footer.ClassicsFooter;
import com.scwang.smart.refresh.header.ClassicsHeader;
import com.scwang.smart.refresh.layout.SmartRefreshLayout;
import com.scwang.smart.refresh.layout.api.RefreshFooter;
import com.scwang.smart.refresh.layout.api.RefreshHeader;
import com.scwang.smart.refresh.layout.api.RefreshLayout;
import com.scwang.smart.refresh.layout.listener.DefaultRefreshFooterCreator;
import com.scwang.smart.refresh.layout.listener.DefaultRefreshHeaderCreator;

public class MyApplication extends Application {
    //static 代码段可以防止内存泄露
    static {
        //设置全局的Header构建器
        SmartRefreshLayout.setDefaultRefreshHeaderCreator(new DefaultRefreshHeaderCreator() {
            @Override
            public RefreshHeader createRefreshHeader(Context context, RefreshLayout layout) {
                layout.setPrimaryColorsId(R.color.purple_200, android.R.color.white);//全局设置主题颜色
                return new ClassicsHeader(context);//.setTimeFormat(new DynamicTimeFormat("更新于 %s"));//指定为经典Header，默认是 贝塞尔雷达Header
            }
        });
        //设置全局的Footer构建器
        SmartRefreshLayout.setDefaultRefreshFooterCreator(new DefaultRefreshFooterCreator() {
            @Override
            public RefreshFooter createRefreshFooter(Context context, RefreshLayout layout) {
                //指定为经典Footer，默认是 BallPulseFooter
                return new ClassicsFooter(context).setDrawableSize(20);
            }
        });
    }
}

step2:

package com.example.myapplication9;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import com.scwang.smart.refresh.footer.ClassicsFooter;
import com.scwang.smart.refresh.header.ClassicsHeader;
import com.scwang.smart.refresh.layout.api.RefreshLayout;
import com.scwang.smart.refresh.layout.listener.OnLoadMoreListener;
import com.scwang.smart.refresh.layout.listener.OnRefreshListener;

public class MainActivity extends AppCompatActivity {
    //参考网站：https://github.com/scwang90/SmartRefreshLayout

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

        RefreshLayout refreshLayout = (RefreshLayout) findViewById(R.id.refreshLayout);
        refreshLayout.setRefreshHeader(new ClassicsHeader(this));
        refreshLayout.setRefreshFooter(new ClassicsFooter(this));
        refreshLayout.setOnRefreshListener(new OnRefreshListener() {
            @Override
            public void onRefresh(RefreshLayout refreshlayout) {
                refreshlayout.finishRefresh(2000/*,false*/);//传入false表示刷新失败
            }
        });
        refreshLayout.setOnLoadMoreListener(new OnLoadMoreListener() {
            @Override
            public void onLoadMore(RefreshLayout refreshlayout) {
                refreshlayout.finishLoadMore(2000/*,false*/);//传入false表示加载失败
            }
        });
    }
}

step3:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    android:fitsSystemWindows="true"
    android:orientation="vertical">

    <RelativeLayout
        android:id="@+id/content_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.scwang.smart.refresh.layout.SmartRefreshLayout
            android:id="@+id/refreshLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            <com.scwang.smart.refresh.header.ClassicsHeader
                android:layout_width="match_parent"
                android:layout_height="wrap_content"/>
            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/recyclerView"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:overScrollMode="never"
                android:background="#fff" />
            <com.scwang.smart.refresh.footer.ClassicsFooter
                android:layout_width="match_parent"
                android:layout_height="wrap_content"/>
        </com.scwang.smart.refresh.layout.SmartRefreshLayout>

    </RelativeLayout>
</RelativeLayout>

step4:

   //下拉刷新
    implementation 'com.scwang.smart:refresh-layout-kernel:2.0.0-alpha-1'
    implementation 'com.scwang.smart:refresh-header-classics:2.0.0-alpha-1'
    implementation 'androidx.recyclerview:recyclerview:1.1.0'

end