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

来源：https://blog.csdn.net/Imshuyuan/article/details/72877829