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关闭之前的项目,新建一个android7.0的项目,双击文件列表里build.gradle在里边dependencies标签里添加依赖项- compile 'com.android.support:recyclerview-v7:26.+'
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activity_main.xml文件修改为- <?xml version="1.0" encoding="utf-8"?>
- <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:app="http://schemas.android.com/apk/res-auto"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- tools:context="com.example.xinwei.myrecycleviewactivity.MainActivity">
- <android.support.v7.widget.RecyclerView
- android:id="@+id/recycler_view"
- android:layout_width="match_parent"
- android:layout_height="match_parent" />
- </android.support.constraint.ConstraintLayout>
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layout目录下新建fruit_item.xml文件- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="horizontal" android:layout_width="match_parent"
- android:layout_height="match_parent">
- <ImageView
- android:id="@+id/fruit_image"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content" />
- <TextView
- android:id="@+id/fruit_name"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content" />
- </LinearLayout>
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在mainactivity.java文件旁边新建Fruit.java文件- package com.example.xinwei.myrecycleviewactivity;
- public class Fruit {
- private String name;
- private int imageId;
- public Fruit(String name, int imageId) {
- this.name = name;
- this.imageId = imageId;
- }
- public String getName() {
- return name;
- }
- public int getImageId() {
- return imageId;
- }
- }
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还是把原来的图片复制到drawable目录下,然后把mainactivity.java修改为:- package com.example.xinwei.myrecycleviewactivity;
- import android.support.v7.app.AppCompatActivity;
- import android.os.Bundle;
- import android.support.v7.widget.LinearLayoutManager;
- import android.support.v7.widget.RecyclerView;
- import java.util.ArrayList;
- import java.util.List;
- public class MainActivity extends AppCompatActivity {
- private List<Fruit> fruitList= new ArrayList<>();
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- initFruit();
- RecyclerView recyclerView = (RecyclerView)findViewById(R.id.recycler_view);
- LinearLayoutManager layoutManager = new LinearLayoutManager(this);
- recyclerView.setLayoutManager(layoutManager);
- FruitAdapter adapter = new FruitAdapter(fruitList);
- recyclerView.setAdapter(adapter);
- }
- private void initFruit() {
- for (int i=0;i<2;i++){
- Fruit a = new Fruit("樱桃",R.drawable.a);
- fruitList.add(a);
- Fruit b = new Fruit("草莓",R.drawable.b);
- fruitList.add(b);
- Fruit c = new Fruit("小樱桃",R.drawable.c);
- fruitList.add(c);
- Fruit d = new Fruit("苹果",R.drawable.d);
- fruitList.add(d);
- Fruit e = new Fruit("桃子",R.drawable.e);
- fruitList.add(e);
- Fruit f = new Fruit("青柠檬",R.drawable.f);
- fruitList.add(f);
- Fruit g = new Fruit("柠檬",R.drawable.g);
- fruitList.add(g);
- Fruit h = new Fruit("葡萄",R.drawable.h);
- fruitList.add(h);
- Fruit i1 = new Fruit("梨",R.drawable.i);
- fruitList.add(i1);
- Fruit j = new Fruit("香蕉",R.drawable.j);
- fruitList.add(j);
- }
- }
- }
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再新建FruitAdapter.java文件:
- package com.example.xinwei.myrecycleviewactivity;
- import android.support.v7.widget.RecyclerView;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.ImageView;
- import android.widget.TextView;
- import java.util.List;
- /**
- * Created by xinwei on 2017/9/28.
- */
- public class FruitAdapter extends RecyclerView.Adapter<FruitAdapter.ViewHolder> {
- private List<Fruit> mFruitList;
- static class ViewHolder extends RecyclerView.ViewHolder{
- ImageView fruitImage;
- TextView fruitName;
- public ViewHolder(View view){
- super(view);
- fruitImage = (ImageView)view.findViewById(R.id.fruit_image);
- fruitName = (TextView)view.findViewById(R.id.fruit_name);
- }
- }
- public FruitAdapter(List<Fruit> fruitList){
- mFruitList = fruitList;
- }
- @Override
- public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
- View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.fruit_item,parent,false);
- ViewHolder holder = new ViewHolder(view);
- return holder;
- }
- @Override
- public void onBindViewHolder(ViewHolder holder, int position) {
- Fruit fruit = mFruitList.get(position);
- holder.fruitImage.setImageResource(fruit.getImageId());
- holder.fruitName.setText(fruit.getName());
- }
- @Override
- public int getItemCount() {
- return mFruitList.size();
- }
- }
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这个每页shi默认只显示一张图,明天继续完善,还有一些其他功能,效果图:
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