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RecycleView在eclipse的初体验

2024-08-18 17:47:47   233人阅读

在sdk中找到v7包

\sdk\extras\android\support\v7\recyclerview

导入工程

Import\Android\Existing Android Code Into Workspace

将导入的recycleview作为依赖库Library

工程上右键properties,勾选is Library，Apply，ok

将recycleview\libs\android_support_v7_recycleview.jar包复制粘贴到主工程的libs文件夹下

在layout中使用<android.support.v7.widget.RecyclerView/>标签

 

MainActivity代码

  1 package com.jiatu.recyclerviewtest;
  2 
  3 import java.util.ArrayList;
  4 import java.util.List;
  5 import android.app.Activity;
  6 import android.os.Bundle;
  7 import android.support.v7.widget.DefaultItemAnimator;
  8 import android.support.v7.widget.GridLayoutManager;
  9 import android.support.v7.widget.LinearLayoutManager;
 10 import android.support.v7.widget.RecyclerView;
 11 import android.support.v7.widget.RecyclerView.ViewHolder;
 12 import android.view.LayoutInflater;
 13 import android.view.View;
 14 import android.view.ViewGroup;
 15 import android.widget.LinearLayout;
 16 import android.widget.TextView;
 17 import android.widget.Toast;
 18 
 19 public class MainActivity extends Activity {
 20     private RecyclerView recyclerView;
 21     private List<Person> list = new ArrayList<Person>();
 22     private LinearLayoutManager mLayoutManager;
 23     // private GridLayoutManager mGridLayoutManager;
 24 
 25     @Override
 26     protected void onCreate(Bundle savedInstanceState) {
 27         super.onCreate(savedInstanceState);
 28         setContentView(R.layout.activity_main);
 29         recyclerView = (RecyclerView) findViewById(R.id.recycler_view_test_rv);
 30         recyclerView.setHasFixedSize(true); // 固定item的高或者宽，提高性能
 31         recyclerView.setItemAnimator(new DefaultItemAnimator());
 32 
 33         mLayoutManager = new LinearLayoutManager(this);
 34         // 设置list的方向，默认是垂直
 35         // mLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
 36 
 37         // 5，spanCount:列数
 38         // mGridLayoutManager = new GridLayoutManager(this, 5);
 39 
 40         recyclerView.setLayoutManager(mLayoutManager);
 41 
 42         initData();
 43         setPersonAdapter();
 44 
 45     }
 46 
 47     /**
 48      * 设置适配器
 49      */
 50     private void setPersonAdapter() {
 51         final PersonAdapter adapter = new PersonAdapter(list);
 52         adapter.setOnRecyclerViewListener(new OnRecyclerViewListener() {
 53 
 54             @Override
 55             public boolean onItemLongClick(int position) {
 56                 adapter.addData(position);
 57                 Toast.makeText(MainActivity.this, "吼吼吼吼吼", Toast.LENGTH_SHORT).show();
 58                 return true;
 59             }
 60 
 61             @Override
 62             public void onItemClick(int position) {
 63                 adapter.removeData(position);
 64                 Toast.makeText(MainActivity.this, "哈哈哈哈哈", Toast.LENGTH_SHORT).show();
 65             }
 66         });
 67 
 68         recyclerView.setAdapter(adapter);
 69     }
 70 
 71     /**
 72      * RecyclerView的单击和长按事件监听
 73      * 
 74      * @author fans created on 2016年11月3日
 75      *
 76      */
 77     public interface OnRecyclerViewListener {
 78         void onItemClick(int position);
 79 
 80         boolean onItemLongClick(int position);
 81     }
 82 
 83     /**
 84      * 适配器
 85      * 
 86      * @author fans created on 2016年11月3日
 87      *
 88      */
 89     class PersonAdapter extends RecyclerView.Adapter<ViewHolder> {
 90 
 91         private OnRecyclerViewListener onRecyclerViewListener;
 92 
 93         public void setOnRecyclerViewListener(OnRecyclerViewListener onRecyclerViewListener) {
 94             this.onRecyclerViewListener = onRecyclerViewListener;
 95         }
 96 
 97         private List<Person> list = new ArrayList<Person>();
 98 
 99         public PersonAdapter(List<Person> list) {
100             this.list = list;
101         }
102 
103         /**
104          * 增加一个item
105          * 
106          * @param position
107          */
108         public void addData(int position) {
109             list.add(position, new Person("fans+", 23));
110             notifyItemInserted(position);
111             notifyItemRangeChanged(position, list.size());
112         }
113 
114         /**
115          * 删减一个item
116          * 
117          * @param position
118          */
119         public void removeData(int position) {
120             list.remove(position);
121             notifyDataSetChanged();
122             notifyItemRemoved(position);
123             notifyItemRangeChanged(position, list.size());
124         }
125 
126         @Override
127         public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
128 
129             View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item, null);
130             LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
131                     ViewGroup.LayoutParams.WRAP_CONTENT);
132             view.setLayoutParams(lp);
133             return new PersonViewHolder(view);
134         }
135 
136         @Override
137         public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int i) {
138             PersonViewHolder holder = (PersonViewHolder) viewHolder;
139             holder.position = i;
140             Person person = list.get(i);
141             holder.nameTv.setText(person.name);
142             holder.ageTv.setText(person.age + "岁");
143         }
144 
145         @Override
146         public int getItemCount() {
147             return list.size();
148         }
149 
150         class PersonViewHolder extends RecyclerView.ViewHolder
151                 implements View.OnClickListener, View.OnLongClickListener {
152             public View rootView;
153             public TextView nameTv;
154             public TextView ageTv;
155             public int position;
156 
157             public PersonViewHolder(View itemView) {
158                 super(itemView);
159                 nameTv = (TextView) itemView.findViewById(R.id.recycler_view_test_item_person_name_tv);
160                 ageTv = (TextView) itemView.findViewById(R.id.recycler_view_test_item_person_age_tv);
161                 rootView = itemView.findViewById(R.id.recycler_view_test_item_person_view);
162                 rootView.setOnClickListener(this);
163                 rootView.setOnLongClickListener(this);
164             }
165 
166             @Override
167             public void onClick(View v) {
168                 if (null != onRecyclerViewListener) {
169                     onRecyclerViewListener.onItemClick(position);
170                 }
171             }
172 
173             @Override
174             public boolean onLongClick(View v) {
175                 if (null != onRecyclerViewListener) {
176                     return onRecyclerViewListener.onItemLongClick(position);
177                 }
178                 return false;
179             }
180         }
181 
182     }
183 
184     /**
185      * 填充数据
186      */
187     private void initData() {
188         for (int i = 0; i < 10; i++) {
189             list.add(new Person("fans" + i, 10 + i));
190         }
191     }
192 
193     class Person {
194         public String name;
195         public int age;
196 
197         public Person(String name, int age) {
198             super();
199             this.name = name;
200             this.age = age;
201         }
202 
203     }
204 }

layout代码

<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="${relativePackage}.${activityClass}" >

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view_test_rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#bbccaa"
        android:scrollbars="vertical" />


</RelativeLayout>

item代码

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:id="@+id/recycler_view_test_item_person_view"
 4     android:layout_width="match_parent"
 5     android:layout_height="wrap_content"
 6     android:background="#aabbcc"
 7     android:orientation="vertical"
 8     android:padding="15dp" >
 9 
10     <TextView
11         android:id="@+id/recycler_view_test_item_person_name_tv"
12         android:layout_width="match_parent"
13         android:layout_height="wrap_content"
14         android:background="#ccbbaa"
15         android:textSize="18sp" />
16 
17     <TextView
18         android:id="@+id/recycler_view_test_item_person_age_tv"
19         android:layout_width="match_parent"
20         android:layout_height="wrap_content"
21         android:background="#aaccbb"
22         android:paddingLeft="5dp"
23         android:textSize="15sp" />
24 
25 </LinearLayout>

 

RecycleView在eclipse的初体验


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