SwipeToLoadLayout之倒包加上啦加載下拉刷新demo

SwipeToLoadLayout 上下拉控件 很不錯

她：你想做什麼？

我：我想環遊世界

然後，我圍着她轉了一圈。

效果圖：

開發工具：android studio 2.2.3

測試機型：夜神模擬器

GitHub地址：https://github.com/Aspsine/SwipeToLoadLayout

如何在我們工程中使用：

1、添加依賴：

maven { url "https://jitpack.io" }

compile 'com.github.Aspsine:SwipeToLoadLayout:1.0.4'

RefreshHeaderView（自己創建）:

package com.wentong.administrator.swipetoloaddemo;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.TextView;

import com.aspsine.swipetoloadlayout.SwipeRefreshTrigger;
import com.aspsine.swipetoloadlayout.SwipeTrigger;

/**
 * Created by Administrator on 2017/3/17.
 */

public class RefreshHeaderView extends TextView implements SwipeRefreshTrigger,SwipeTrigger {
    public RefreshHeaderView(Context context) {
        super(context);
    }
    public RefreshHeaderView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public void onRefresh() {
        setText("正在刷新");
    }

    @Override
    public void onPrepare() {
        setText("");
    }

    @Override
    public void onMove(int i, boolean b, boolean b1) {
        if (!b) {
            if (i >= getHeight()) {
                setText("鬆開後刷新");
            } else {
                setText("下拉刷新");
            }
        } else {
            setText("刷新完畢");
        }
    }

    @Override
    public void onRelease() {

    }

    @Override
    public void onComplete() {
        setText("刷新完成");
    }

    @Override
    public void onReset() {
        setText("");
    }
}

LoadMoreFooterView:

package com.wentong.administrator.swipetoloaddemo;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.TextView;

import com.aspsine.swipetoloadlayout.SwipeLoadMoreTrigger;
import com.aspsine.swipetoloadlayout.SwipeTrigger;

/**
 * Created by Administrator on 2017/3/17.
 */

public class LoadMoreFooterView extends TextView implements SwipeTrigger, SwipeLoadMoreTrigger {
    public LoadMoreFooterView(Context context) {
        super(context);
    }

    public LoadMoreFooterView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public void onLoadMore() {
        setText("正在加載");
    }

    @Override
    public void onPrepare() {
        setText("");
    }

    @Override
    public void onMove(int i, boolean b, boolean b1) {
        if (!b) {
            if (i <= -getHeight()) {
                setText("鬆開後加載");
            } else {
                setText("上拉加載更多");
            }
        } else {
            setText("4");
        }
    }

    @Override
    public void onRelease() {
        setText("5");
    }

    @Override
    public void onComplete() {
        setText("加載完成");
    }

    @Override
    public void onReset() {
        setText("");
    }
}

Activity：

package com.wentong.administrator.swipetoloaddemo.activity;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;

import com.aspsine.swipetoloadlayout.OnLoadMoreListener;
import com.aspsine.swipetoloadlayout.OnRefreshListener;
import com.aspsine.swipetoloadlayout.SwipeToLoadLayout;
import com.wentong.administrator.swipetoloaddemo.R;
import com.wentong.administrator.swipetoloaddemo.adapter.AdapterRecycler;

import java.util.ArrayList;
import java.util.Date;

/**
 * Created by Administrator on 2017/3/17.
 */

public class ActivityRecycler extends AppCompatActivity{

    SwipeToLoadLayout swipeToLoadLayout ;
    RecyclerView recyclerView ;
    AdapterRecycler adapterRecycler ;
    ArrayList<String> arrayList ;

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

        initView() ;
    }

    private void initView() {
        swipeToLoadLayout = (SwipeToLoadLayout) findViewById(R.id.act_recycler_swipe) ;
        recyclerView = (RecyclerView) findViewById(R.id.swipe_target) ;

        LinearLayoutManager llm = new LinearLayoutManager(this) ;
        llm.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(llm);

        swipeToLoadLayout.setOnRefreshListener(new OnRefreshListener() {
            @Override
            public void onRefresh() {
                swipeToLoadLayout.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        swipeToLoadLayout.setRefreshing(false);
                            arrayList.add("下拉刷新出來的:\n" + new Date()) ;
                    }
                } , 2000) ;
            }
        });
        swipeToLoadLayout.setOnLoadMoreListener(new OnLoadMoreListener() {
            @Override
            public void onLoadMore() {
                swipeToLoadLayout.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        swipeToLoadLayout.setLoadingMore(false);
                        arrayList.add("上拉加載出來的:\n" + new Date() ) ;
                    }
                } , 2000) ;
            }
        });
        adapterRecycler = new AdapterRecycler(this) ;
        arrayList = new ArrayList<>() ;
        for (int i = 0; i <8 ; i++) {
            arrayList.add("模擬的初始數據:" + i) ;
        }
        adapterRecycler.setArrayList(arrayList);
        recyclerView.setAdapter(adapterRecycler);

        swipeToLoadLayout.post(new Runnable() {
            @Override
            public void run() {
                swipeToLoadLayout.setRefreshing(true);
            }
        }) ;

    }

}

XML:

<?xml version="1.0" encoding="utf-8"?>
<com.aspsine.swipetoloadlayout.SwipeToLoadLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".activity.ActivityRecycler"
    android:id="@+id/act_recycler_swipe"
    app:refresh_final_drag_offset="100dp">

    <com.wentong.administrator.swipetoloaddemo.RefreshHeaderView
        android:id="@+id/swipe_refresh_header"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:gravity="center"
        android:background="@color/colorAccent"/>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/swipe_target"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

    <com.wentong.administrator.swipetoloaddemo.LoadMoreFooterView
        android:id="@+id/swipe_load_more_footer"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:gravity="center"
        android:background="@color/colorPrimaryDark"/>

</com.aspsine.swipetoloadlayout.SwipeToLoadLayout>

Adapter：

package com.wentong.administrator.swipetoloaddemo.adapter;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.wentong.administrator.swipetoloaddemo.R;

import java.util.ArrayList;

/**
 * Created by Administrator on 2017/3/17.
 */

public class AdapterRecycler extends RecyclerView.Adapter<AdapterRecycler.My>{

    Context context ;
    ArrayList<String> arrayList ;

    public ArrayList<String> getArrayList() {
        return arrayList;
    }

    public void setArrayList(ArrayList<String> arrayList) {
        this.arrayList = arrayList;
    }

    public AdapterRecycler(Context context) {
        this.context = context;
        arrayList = new ArrayList<>() ;

    }

    @Override
    public My onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.adapter_recycler , parent , false) ;
        My my = new My(view) ;
        return my;
    }

    @Override
    public void onBindViewHolder(My holder, int position) {
        holder.tv_one.setText(arrayList.get(position));
        holder.tv_two.setText(arrayList.get(position));
    }

    @Override
    public int getItemCount() {
        return arrayList.size();
    }

    class My extends RecyclerView.ViewHolder{
        TextView tv_one , tv_two ;
        public My(View itemView) {
            super(itemView);
            tv_one = (TextView) itemView.findViewById(R.id.adapter_recycler_tv_one) ;
            tv_two = (TextView) itemView.findViewById(R.id.adapter_recycler_tv_two) ;
        }
    }
}

注意一點：我在這裏寫的是recyclerView ，官網上面的是ListView 我在換成RecyclerView時候出現了空指針的異常。

查看簡書作者@lavor 查明原因： 就是我們xml文件裏的三個子視圖id必須和我一樣 不然就會出現空指針異常。

OK!

進階版，效果圖：

demo地址：