RecyclerView的基本创建

最新推荐文章于 2022-02-04 00:35:20 发布

xzylx1

最新推荐文章于 2022-02-04 00:35:20 发布

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文章标签： android

本文链接：https://blog.youkuaiyun.com/xzylx1/article/details/50418212

本文介绍如何使用RecyclerView实现ListView、GridView及瀑布流布局，并提供完整的代码示例。通过不同的LayoutManager设置，可以轻松实现各种列表展示效果。

线性显示类似于listview：

线性宫格显示类似于grid view：

用线性宫格显示类似于瀑布流：

结构图：

测试代码：

activity_main.xml：

<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" >

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" />

</RelativeLayout>

activity_main.xml

MainActivity.java：

package com.zzw.testrecyclerview;

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.OrientationHelper;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.RecyclerView.Adapter;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.widget.TextView;

public class MainActivity extends Activity {

    RecyclerView mRecyclerView;

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

        String[] mTitles = new String[100];

        for (int i = 0; i < 99; i++) {
            mTitles[i] = "测试数据" + i;
        }

        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        // 这里用线性显示 类似于listview
//        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        // 这里用线性宫格显示 类似于grid view
//         mRecyclerView.setLayoutManager(new GridLayoutManager(this,3));

        // 这里用线性宫格显示 类似于瀑布流
         mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(2,
         OrientationHelper.VERTICAL));

        NormalRecyclerViewAdapter adapter = new NormalRecyclerViewAdapter(this,
                android.R.layout.simple_list_item_1, mTitles);

        mRecyclerView.setAdapter(adapter);
    }

}

NormalRecyclerViewAdapter.java：

package com.zzw.testrecyclerview;

import android.content.Context;
import android.support.v7.widget.RecyclerView.Adapter;
import android.support.v7.widget.RecyclerView.ViewHolder;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.TextView;

public class NormalRecyclerViewAdapter extends
        Adapter<NormalRecyclerViewAdapter.NormalTextViewHolder> {
    private final LayoutInflater mLayoutInflater;
    private final Context mContext;
    private String[] mTitles;

    public NormalRecyclerViewAdapter(Context context, int item_id,
            String[] Titles) {
        mContext = context;
        mTitles = Titles;
        mLayoutInflater = LayoutInflater.from(context);
    }

    @Override
    public int getItemCount() {

        return mTitles == null ? 0 : mTitles.length;
    }

    @Override
    public NormalTextViewHolder onCreateViewHolder(ViewGroup arg0, int arg1) {

        return new NormalTextViewHolder(mLayoutInflater.inflate(
                android.R.layout.simple_list_item_1, null));
    }

    @Override
    public void onBindViewHolder(NormalTextViewHolder holder, int position) {
            holder.mTextView.setText(mTitles[position]);
    }

    public static class NormalTextViewHolder extends ViewHolder {
        
        TextView mTextView;

        public NormalTextViewHolder(View view) {
            super(view);
            mTextView=(TextView) view.findViewById(android.R.id.text1);
            view.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    Log.d("NormalTextViewHolder", "onClick--> position = "
                            + getPosition());
                }
            });
        }
    }
}