RecyclerView的使用之多种Item加载布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><android.support.v7.widget.RecyclerViewxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:id="@+id/rv_list"/></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><android.support.v7.widget.CardViewxmlns:card_view="http://schemas.android.com/apk/res-auto"xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="8dp"android:id="@+id/cv_item"android:foreground="?android:attr/selectableItemBackground"card_view:cardCornerRadius="4dp"card_view:cardBackgroundColor="#ffffff"card_view:cardElevation="4dp"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><ImageViewandroid:id="@+id/iv_item1_pic"android:layout_width="match_parent"android:layout_height="120dp"android:layout_weight="1"android:background="@mipmap/lighthouse"/><TextViewandroid:id="@+id/tv_item1_text"android:padding="20dp"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout></android.support.v7.widget.CardView>

<?xml version="1.0" encoding="utf-8"?><android.support.v7.widget.CardViewxmlns:card_view="http://schemas.android.com/apk/res-auto"xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_margin="8dp"android:foreground="?android:attr/selectableItemBackground"card_view:cardCornerRadius="4dp"card_view:cardBackgroundColor="#E040FB"card_view:cardElevation="4dp"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><TextViewandroid:id="@+id/tv_item2_text"android:padding="20dp"android:textColor="#ffffff"android:layout_width="match_parent"android:layout_height="wrap_content"/></LinearLayout></android.support.v7.widget.CardView>

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.TextView;/*** Created by Lijizhou on 2016/2/21.*/public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {private LayoutInflater mLayoutInflater;private Context context;private String [] titles;//建立枚举 2个item 类型public enum ITEM_TYPE {ITEM1,ITEM2}public RecyclerViewAdapter(Context context,String[] titles){this.titles = titles;this.context = context;mLayoutInflater = LayoutInflater.from(context);}@Overridepublic RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {//加载Item View的时候根据不同TYPE加载不同的布局if (viewType == ITEM_TYPE.ITEM1.ordinal()) {return new Item1ViewHolder(mLayoutInflater.inflate(R.layout.item1, parent, false));} else {return new Item2ViewHolder(mLayoutInflater.inflate(R.layout.item2, parent, false));}}@Overridepublic void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {if (holder instanceof Item1ViewHolder) {((Item1ViewHolder) holder).mTextView.setText(titles[position]);} else if (holder instanceof Item2ViewHolder) {((Item2ViewHolder) holder).mTextView.setText(titles[position]);}}//设置ITEM类型，可以自由发挥，这里设置item position单数显示item1 偶数显示item2@Overridepublic int getItemViewType(int position) {//Enum类提供了一个ordinal()方法，返回枚举类型的序数，这里ITEM_TYPE.ITEM1.ordinal()代表0， ITEM_TYPE.ITEM2.ordinal()代表1return position % 2 == 0 ? ITEM_TYPE.ITEM1.ordinal() : ITEM_TYPE.ITEM2.ordinal();}@Overridepublic int getItemCount() {return titles == null ? 0 : titles.length;}//item1 的ViewHolderpublic static class Item1ViewHolder extends RecyclerView.ViewHolder{TextView mTextView;public Item1ViewHolder(View itemView) {super(itemView);mTextView=(TextView)itemView.findViewById(R.id.tv_item1_text);}}//item2 的ViewHolderpublic static class Item2ViewHolder extends RecyclerView.ViewHolder{TextView mTextView;public Item2ViewHolder(View itemView) {super(itemView);mTextView=(TextView)itemView.findViewById(R.id.tv_item2_text);}}}

import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;/*** Created by Lijizhou on 2016/2/21.*/public class RecyclerViewActivity extends AppCompatActivity {private RecyclerView mRecyclerView;//item 显示所需(仅供DEMO)private String[] title = {"Blog : http://blog.csdn.net/Leejizhou.","A good laugh and a long sleep are the best cures in the doctor's book.","all or nothing, now or never ","Be nice to people on the way up, because you'll need them on your way down.","Be confident with yourself and stop worrying what other people think. Do what's best for your future happiness!","Blessed is he whose fame does not outshine his truth.","Create good memories today, so that you can have a good past"};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_recyclerview);mRecyclerView=(RecyclerView)findViewById(R.id.rv_list);//这里根据上一个页面的传入值来加载LIST或GRID，上一个页面仅仅2个按钮，参考演示DEMOif (getIntent().getIntExtra("type", 0) == 1){//ListLinearLayoutManager layoutManager = new LinearLayoutManager(this);layoutManager.setOrientation(LinearLayoutManager.VERTICAL);mRecyclerView.setLayoutManager(layoutManager);}else if(getIntent().getIntExtra("type", 0) == 2){//gridmRecyclerView.setLayoutManager(new GridLayoutManager(this, 2));}//RecyclerView设置AdaptermRecyclerView.setAdapter(new RecyclerViewAdapter(this, title));}}