Easyrecyclerview 使用体验

最新推荐文章于 2025-01-11 09:58:24 发布

christyleylh

最新推荐文章于 2025-01-11 09:58:24 发布

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分类专栏： Android 文章标签： recyclerview Android

本文链接：https://blog.youkuaiyun.com/qq_34020571/article/details/78537250

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本文介绍了如何将RecyclerView的常见需求封装到Easyrecyclerview库中，以提升开发效率。核心在于Adapter和ViewHolder的解耦，使Adapter专注于业务逻辑，ViewHolder专注于视图展示。该库还支持数据管理、Header与Footer的添加、加载更多、无更多数据和加载错误等功能。部分代码参考了Malinskiy的SuperRecyclerView，实现更多功能。

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将开发中常用的RecyclerView的各种需求封装进库。提升开发效率。
重点在Adapter与viewholder的封装。他们之间彻底解耦。
adapter工作更少，仅负责业务逻辑。所以如果你使用mvp架构可以放进presenter层。
viewholder负责View展示与Adapter没有任何耦合，将可以到处复用。并不会影响运行效率。
并且adapter支持数据管理，Header与Footer添加，加载更多。没有更多。加载错误
使用了部分Malinskiy/SuperRecyclerView的代码，将更多功能交给了adapter实现。

app/build.gradle

compile 'com.jude:easyrecyclerview:4.4.2'

xml

<com.jude.easyrecyclerview.EasyRecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/rl_login_head"
        android:scrollbarStyle="insideOverlay"
        app:layout_empty="@layout/layout_view_empty"
        >

    </com.jude.easyrecyclerview.EasyRecyclerView>

PhoneAttrActivity.java

package com.seatel.mobilehall.activity;

import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.view.View;

import com.jude.easyrecyclerview.EasyRecyclerView;
import com.jude.easyrecyclerview.adapter.RecyclerArrayAdapter;
import com.jude.easyrecyclerview.decoration.DividerDecoration;
import com.jude.easyrecyclerview.decoration.StickyHeaderDecoration;
import com.seatel.mobilehall.R;
import com.seatel.mobilehall.adapter.PhoneAttrAdapter;
import com.seatel.mobilehall.adapter.StickyHeaderAdapter;
import com.seatel.mobilehall.base.BaseActivity;
import com.seatel.mobilehall.bean.PhoneAttrBean;
import com.seatel.mobilehall.util.SysTools;

import java.util.ArrayList;

public class PhoneAttrActivity extends BaseActivity {

    private EasyRecyclerView recyclerView;
    private PhoneAttrAdapter adapter;

    private ArrayList<PhoneAttrBean> mData;

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

        initData();
        initView();
    }

    private void initData() {
        mData = new ArrayList<>();
        mData.add(new PhoneAttrBean("柬埔寨","+855"));
        mData.add(new PhoneAttrBean("中国大陆","+86"));
        mData.add(new PhoneAttrBean("中国香港","+852"));
        mData.add(new PhoneAttrBean("中国澳门","+853"));
        mData.add(new PhoneAttrBean("中国台湾","+886"));
        mData.add(new PhoneAttrBean("柬埔寨","+855"));
        mData.add(new PhoneAttrBean("中国大陆","+86"));
        mData.add(new PhoneAttrBean("中国香港","+852"));
        mData.add(new PhoneAttrBean("中国澳门","+853"));
        mData.add(new PhoneAttrBean("中国台湾","+886"));
        mData.add(new PhoneAttrBean("柬埔寨","+855"));
        mData.add(new PhoneAttrBean("中国大陆","+86"));
        mData.add(new PhoneAttrBean("中国香港","+852"));
        mData.add(new PhoneAttrBean("中国澳门","+853"));
        mData.add(new PhoneAttrBean("中国台湾","+886"));
        mData.add(new PhoneAttrBean("柬埔寨","+855"));
        mData.add(new PhoneAttrBean("中国大陆","+86"));
        mData.add(new PhoneAttrBean("中国香港","+852"));
        mData.add(new PhoneAttrBean("中国澳门","+853"));
        mData.add(new PhoneAttrBean("中国台湾","+886"));
        mData.add(new PhoneAttrBean("柬埔寨","+855"));
        mData.add(new PhoneAttrBean("中国大陆","+86"));
        mData.add(new PhoneAttrBean("中国香港","+852"));

    }

    private void initView() {
        recyclerView = (EasyRecyclerView) findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        DividerDecoration itemDecoration = new DividerDecoration(Color.LTGRAY, SysTools.dip2px(this, 0.5f), 0, 0);
        itemDecoration.setDrawLastItem(false);
        recyclerView.addItemDecoration(itemDecoration);
        adapter = new PhoneAttrAdapter(this);
        recyclerView.setAdapter(adapter);
        adapter.addAll(mData);
        recyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
        // StickyHeader
        StickyHeaderDecoration decoration = new StickyHeaderDecoration(new StickyHeaderAdapter(this));
        decoration.setIncludeHeader(false);
        recyclerView.addItemDecoration(decoration);

        findViewById(R.id.login_close).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                finish();
            }
        });
    }
}

PhoneAttrAdapter.java

package com.seatel.mobilehall.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.jude.easyrecyclerview.adapter.BaseViewHolder;
import com.jude.easyrecyclerview.adapter.RecyclerArrayAdapter;
import com.seatel.mobilehall.R;
import com.seatel.mobilehall.bean.PhoneAttrBean;

/**
 * Created by ylh on 2017/11/14 0014.
 */

public class PhoneAttrAdapter extends RecyclerArrayAdapter<PhoneAttrBean>{

    public PhoneAttrAdapter(Context context) {
        super(context);
    }

    @Override
    public BaseViewHolder OnCreateViewHolder(ViewGroup parent, int viewType) {
        return new MyViewHodler(parent);
    }

    public static class MyViewHodler extends BaseViewHolder<PhoneAttrBean>{

        TextView mTv;
        TextView mTvRight;


        public MyViewHodler(ViewGroup parent) {
            super(parent,R.layout.view_rv_attr_item);
            mTv = $(R.id.item_tv);
            mTvRight = $(R.id.item_tv_right);
        }

        @Override
        public void setData(PhoneAttrBean data) {
            super.setData(data);
            mTv.setText(data.getLocation());
            mTvRight.setText(data.getPhone());

        }
    }
}

StickyHeaderAdapter.java

package com.seatel.mobilehall.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.jude.easyrecyclerview.decoration.StickyHeaderDecoration;
import com.seatel.mobilehall.R;

/**
 * Created by ylh on 2017/11/14 0014.
 */

public class StickyHeaderAdapter implements StickyHeaderDecoration.IStickyHeaderAdapter<StickyHeaderAdapter.HeaderHolder> {

    private LayoutInflater mInflater;

    public StickyHeaderAdapter(Context context) {
        mInflater = LayoutInflater.from(context);
    }

    @Override
    public long getHeaderId(int position) {
        return position>4?1:0;
    }

    @Override
    public HeaderHolder onCreateHeaderViewHolder(ViewGroup parent) {
        final View view = mInflater.inflate(R.layout.header_item, parent, false);
        return new HeaderHolder(view);
    }

    @Override
    public void onBindHeaderViewHolder(HeaderHolder viewholder, int position) {
        if (getHeaderId(position) == 0) {
            viewholder.header.setText("常用");
        } else {
            viewholder.header.setText("国家");
        }
    }

    class HeaderHolder extends RecyclerView.ViewHolder {
        public TextView header;

        public HeaderHolder(View itemView) {
            super(itemView);
            header = (TextView) itemView.findViewById(R.id.item_tv);
        }
    }
}

效果图

上拉刷新：

recyclerView.setRefreshListener(this);
@Override
    public void onRefresh() {
        recyclerView.postDelayed(new Runnable() {
            @Override
            public void run() {
                adapter.clear();
                adapter.addAll(mData);
            }
        },1000);

    }