RecyclerView实现横向的GridView效果

要使用RecyclerView，首先要在build.gradle文件中添加依赖

compile 'com.android.support:appcompat-v7:24.1.0'

效果图


布局如下

<?xml version="1.0" encoding="utf-8"?>
<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="com.dxx.recycleviewtestdemo.MainActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/rv"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_margin="20dp"/>
</RelativeLayout>

使用方法:

package com.dxx.recycleviewtestdemo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView rv = (RecyclerView) findViewById(R.id.rv);
rv.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false));//设置布局管理器
rv.setAdapter(new MyRVAdapter(this));
}
}

其Adapter要继承RecyclerView.Adapter,在Adapter中药先定义ViewHolder，并继承RecyclerView.ViewHolder;如：

public class ViewHolder extends RecyclerView.ViewHolder{
public ViewHolder(View itemView) {
super(itemView);
}
ImageView rv_item_image;
TextView rv_item_tv;
}

在onCreateViewHolder进行初始化操作，在onBindViewHolder中对各种事件进行处理,getItemCount返回的是 RecyclerView的长度，其布局与代码如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginLeft="18dp"
android:layout_marginBottom="5dp"
android:orientation="vertical">

<ImageView
android:id="@+id/rv_item_image"
android:layout_width="82dp"
android:layout_height="82dp"
android:scaleType="centerCrop"
android:src="@drawable/shiqikuangsan"/>

<TextView
android:id="@+id/rv_item_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="9dp"
android:textSize="15sp"/>
</LinearLayout>

package com.dxx.recycleviewtestdemo;

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.ImageView;
import android.widget.TextView;

/**
* Created by duxiaxing on 2016/7/27.
*/
public class MyRVAdapter extends RecyclerView.Adapter<MyRVAdapter.ViewHolder> {
private Context context;
public MyRVAdapter(Context context){
this.context = context;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.layout_rv_item,parent,false);
ViewHolder holder = new ViewHolder(view);
holder.rv_item_image = (ImageView) view.findViewById(R.id.rv_item_image);
holder.rv_item_tv = (TextView) view.findViewById(R.id.rv_item_tv);
return holder;
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.rv_item_tv.setText(position + "");
}

@Override
public int getItemCount() {
return 9;
}

public class ViewHolder extends RecyclerView.ViewHolder{
public ViewHolder(View itemView) {
super(itemView);
}
ImageView rv_item_image;
TextView rv_item_tv;
}
}