RecylerView实现流布局StaggeredGridLayoutManager使用详解

本文实例为大家分享了RecylerView实现流布局的具体代码，供大家参考，具体内容如下

第一步：添加依赖


compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:design:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.github.bumptech.glide:glide:3.7.0'

因为加载的是网络图片，所以采用的是Glide图片加载框架。

第二步：recylerview布局 (刷新需要添加SwipeRefreshLayout)


<?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.example.wangchang.testpalette.MainActivity">


 <android.support.v7.widget.RecyclerView
  android:id="@+id/recylerview"
  android:padding="4dp"
  android:layout_width="match_parent"
  android:layout_height="match_parent" />
</RelativeLayout>

第三步：RecylerView初始化


 recyclerView = (RecyclerView) findViewById(R.id.recylerview);

 recyclerView.setHasFixedSize(true);
 recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
  recyclerView.setAdapter(adapter = new DemoAdapter());
  adapter.replaceAll(getData());

Demo中：


final StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2,
    StaggeredGridLayoutManager.VERTICAL);
  mRecyclerView.setLayoutManager(layoutManager);
  mMeizhiListAdapter = new MeizhiListAdapter(getContext(), mMeizhiList);
  mRecyclerView.setAdapter(mMeizhiListAdapter);
  mRecyclerView.addOnScrollListener(getOnBottomListener(layoutManager));//滚动预先加载数据
  mMeizhiListAdapter.setOnMeizhiTouchListener(getOnMeizhiTouchListener());//点击事件

这里主要是 recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)); 设置StaggeredGridLayoutManager布局管理器，参数分别是列数，方向。

第四步：适配器的实现


package com.hsy.utils.utilsdemo.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.ImageView;
import android.widget.TextView;

import com.hsy.utils.utilsdemo.R;
import com.hsy.utils.utilsdemo.module.home.Daily;
import com.hsy.utils.utilslibrary.utils.GlideUtils;

import java.util.List;


/**
 * Created by drakeet on 6/20/15.
 */
public class MeizhiListAdapter
  extends RecyclerView.Adapter<MeizhiListAdapter.ViewHolder> {

 public static final String TAG = "MeizhiListAdapter";

 private List<Daily> mList;
 private Context mContext;
 private OnMeizhiTouchListener mOnMeizhiTouchListener;


 public MeizhiListAdapter(Context context, List<Daily> meizhiList) {
  mList = meizhiList;
  mContext = context;
 }


 @Override
 public ViewHolder onCreateViewHolder(ViewGroup parent, int i) {
  View v = LayoutInflater.from(parent.getContext())
    .inflate(R.layout.item_meizhi, parent, false);
  return new ViewHolder(v);
 }


 @Override
 public void onBindViewHolder(final ViewHolder viewHolder, final int position) {
  Daily meizhi = mList.get(position);
  int limit = 48;
  String text = "";
  if (meizhi != null && meizhi.getTitle() != null) {
   text = meizhi.getTitle().length() > limit ? meizhi.getTitle().substring(0, limit) +
     "..." : meizhi.getTitle();
  }
  viewHolder.meizhi = meizhi;
  viewHolder.titleView.setText(text);
  viewHolder.card.setTag(meizhi.getDesc());

//加载图片
  GlideUtils.displayImage(mContext, meizhi.getImgUrl(), viewHolder.meizhiView);

 }


 @Override
 public void onViewRecycled(ViewHolder holder) {
  super.onViewRecycled(holder);
 }


 @Override
 public int getItemCount() {
  return mList != null ? mList.size() : 0;
 }


 public void setOnMeizhiTouchListener(OnMeizhiTouchListener onMeizhiTouchListener) {
  this.mOnMeizhiTouchListener = onMeizhiTouchListener;
 }


 class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

  ImageView meizhiView;
  TextView titleView;
  View card;
  Daily meizhi;


  public ViewHolder(View itemView) {
   super(itemView);
   card = itemView;
   meizhiView = (ImageView) itemView.findViewById(R.id.meizhi);
   titleView = (TextView) itemView.findViewById(R.id.title);
   meizhiView.setOnClickListener(this);
   card.setOnClickListener(this);
   itemView.setOnClickListener(this);
  }


  @Override
  public void onClick(View v) {
   mOnMeizhiTouchListener.onTouch(v, meizhiView, card, meizhi);
  }
 }
}

每个布局的样式item_layout


<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_marginLeft="5dp"
 android:layout_marginRight="5dp"
 android:layout_marginTop="5dp">


 <LinearLayout
  android:id="@+id/meizhi_card"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:clickable="true"
  android:orientation="vertical">
  <!-- android:background="@drawable/bg_card"-->
  <ImageView
   android:id="@+id/meizhi"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:adjustViewBounds="true"
   android:scaleType="fitXY" />

  <LinearLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:background="?attr/selectableItemBackground"
   android:orientation="horizontal"
   android:paddingBottom="10dp"
   android:paddingLeft="10dp"
   android:paddingRight="10dp"
   android:paddingTop="10dp">

   <TextView
    android:id="@+id/title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceSmall"
    tools:text="Title" />

  </LinearLayout>

 </LinearLayout>
</android.support.v7.widget.CardView>

下面来说实现动态设置图片大小方式


ivImage.getContext()).getWindowManager().getDefaultDisplay().getWidth();
  ViewGroup.LayoutParams params = ivImage.getLayoutParams();
  //设置图片的相对于屏幕的宽高比
  params.width = width/3;
  params.height = (int) (200 + Math.random() * 400) ;
  ivImage.setLayoutParams(params);

这里是获取屏幕宽度，因为是三列，所以设置图片宽度取屏幕三分之一。

demo源码：参考UtilsDemo中的消息

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RecylerView实现流布局StaggeredGridLayoutManager使用详解

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