listview的上拉加載，下拉刷新

感覺用到的次數無比多，要是要把它記下來，免得要用的時候又要重來一遍（個人記性太差）

先看效果圖

接下來，說說要怎麼寫

1.首先在.gradle中添加一個jar包
gradle-wrapper.jar

2.在build.gradle添加依賴
compile ‘com.sch.rfview:AnimRefreshRecyclerView:1.0.6@aar’
compile ‘com.android.support:recyclerview-v7:24.0.0’
（recyclerview如果沒有，要自己去下載的，這裡我用的是24.0.0）

3.核心代碼

Activity：

package com.example.administrator.sa.ListviewShangXia;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import com.example.administrator.sa.R;

/**
 * listview的上下拉刷新，ok了
 */

public class ShangXiaActivity extends AppCompatActivity {
    private LinearFragment linearFragment;
    Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_shang_xia);
        linearFragment=new LinearFragment();
        getFragmentManager().beginTransaction().replace(R.id.fragment_container,linearFragment).commit();
        button= (Button) findViewById(R.id.list_shangxia);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getFragmentManager().beginTransaction().setCustomAnimations(R.anim.translate_right_in,
                        R.anim.translate_left_out).replace(R.id.fragment_container, linearFragment).commit();

            }
        });

    }
}

R.layout.activity_shang_xia

    <framelayout android:id="@+id/fragment_container" android:layout_below="@+id/list_shangxia" android:layout_height="match_parent" android:layout_width="match_parent">

</framelayout>

類LinearFragment

package com.example.administrator.sa.ListviewShangXia;

import android.app.Fragment;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.administrator.sa.R;
import com.example.administrator.sa.ShangXiaShuaXin.DimensionConvert;
import com.sch.rfview.AnimRFRecyclerView;
import com.sch.rfview.decoration.DividerItemDecoration;
import com.sch.rfview.manager.AnimRFLinearLayoutManager;

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

/**
 * 
 */
public class LinearFragment extends Fragment {

    private AnimRFRecyclerView mRecyclerView;
    private View headerView;
    private View footerView;
    private List datas;
    private Handler mHandler = new Handler();

    public LinearFragment() {
        // addData();
        datas = new ArrayList<>();
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        if (mRecyclerView == null) {
            // 自定義的RecyclerView, 也可以在布局文件中正常使用
            mRecyclerView = new AnimRFRecyclerView(getActivity());
            // 頭部
            headerView = LayoutInflater.from(getActivity()).inflate(R.layout.header_view, null);
            // 腳部
            footerView = LayoutInflater.from(getActivity()).inflate(R.layout.footer_view, null);

            // 使用重寫後的線性布局管理器
            AnimRFLinearLayoutManager manager = new AnimRFLinearLayoutManager(getActivity());
            mRecyclerView.setLayoutManager(manager);
            mRecyclerView.addItemDecoration(new DividerItemDecoration(getActivity(), manager.getOrientation(), true));
//            // 添加頭部和腳部，如果不添加就使用默認的頭部和腳部
//            mRecyclerView.addHeaderView(headerView);
//            // 設置頭部的最大拉伸倍率，默認1.5f，必須寫在setHeaderImage()之前
//            mRecyclerView.setScaleRatio(1.7f);
//            // 設置下拉時拉伸的圖片，不設置就使用默認的
//            mRecyclerView.setHeaderImage((ImageView) headerView.findViewById(R.id.iv_hander));
//            mRecyclerView.addFootView(footerView);
            // 設置刷新動畫的顏色
            mRecyclerView.setColor(Color.RED, Color.BLUE);
            // 設置頭部恢復動畫的執行時間，默認500毫秒
            mRecyclerView.setHeaderImageDurationMillis(300);
            // 設置拉伸到最高時頭部的透明度，默認0.5f
            mRecyclerView.setHeaderImageMinAlpha(0.6f);
            // 設置適配器
            mRecyclerView.setAdapter(new MyAdapter());

            // 設置刷新和加載更多數據的監聽，分別在onRefresh()和onLoadMore()方法中執行刷新和加載更多操作
            mRecyclerView.setLoadDataListener(new AnimRFRecyclerView.LoadDataListener() {
                @Override
                public void onRefresh() {
                    new Thread(new MyRunnable(true)).start();
                }

                @Override
                public void onLoadMore() {
                    new Thread(new MyRunnable(false)).start();
                }
            });

            // 刷新
            mRecyclerView.setRefresh(true);

        }

        return mRecyclerView;
    }

    class MyRunnable implements Runnable {

        boolean isRefresh;

        public MyRunnable(boolean isRefresh) {
            this.isRefresh = isRefresh;
        }

        @Override
        public void run() {
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (isRefresh) {
                        newData();
                        refreshComplate();
                        // 刷新完成後調用，必須在UI線程中
                        mRecyclerView.refreshComplate();
                    } else {
                        addData();
                        loadMoreComplate();
                        // 加載更多完成後調用，必須在UI線程中
                        mRecyclerView.loadMoreComplate();
                    }
                }
            }, 2000);
        }
    }

    public void refreshComplate() {
        mRecyclerView.getAdapter().notifyDataSetChanged();
    }

    public void loadMoreComplate() {
        mRecyclerView.getAdapter().notifyDataSetChanged();
    }

    /**
     * 添加數據
     */
    private void addData() {
        for (int i = 0; i < 13; i++) {
            datas.add("條目  " + (datas.size() + 1));
        }
    }

    public void newData() {
        datas.clear();
        for (int i = 0; i < 13; i++) {
            datas.add("刷新後條目  " + (datas.size() + 1));
        }
    }

    private class MyAdapter extends RecyclerView.Adapter {

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            TextView view = new TextView(getActivity());
            view.setGravity(Gravity.CENTER);
            view.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                    DimensionConvert.dip2px(getActivity(), 50)));
            MyViewHolder mViewHolder = new MyViewHolder(view);
            return mViewHolder;
        }

        @Override
        public void onBindViewHolder(MyViewHolder holder, final int position) {
            holder.mTextView.setText(datas.get(position));
        }

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

    private class MyViewHolder extends RecyclerView.ViewHolder {

        TextView mTextView;

        public MyViewHolder(View itemView) {
            super(itemView);
            mTextView = (TextView) itemView;
        }
    }

}

類DimensionConvert

package com.example.administrator.sb.ListviewShangXiaShuaXin;

import android.content.Context;

/**
 * 
 */
public class DimensionConvert {

    /**
     * 根據手機的分辨率從 dp 的單位 轉成為 px(像素)
     *
     * @param context
     * @param dpValue 要轉換的dp值
     */
    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }

    /**
     * 根據手機的分辨率從 px(像素) 的單位 轉成為 dp
     *
     * @param context
     * @param pxValue 要轉換的px值
     */
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

}

layout中布局：
footer_view.xml
header_view.xml
anim中的布局：
translate_left_out.xml
translate_right_in.xml

布局代碼：
footer_view.xml

header_view.xml：

translate_left_out.xml

translate_right_in.xml

寫完了