VLayoutDemo【VLayout的簡單使用demo（基於V1.2.8版本）】

時間 2019-11-06

標籤 vlayoutdemo vlayout 簡單使用 demo 基於 v1.2.8 版本简体版

原文原文鏈接

前言

VirtualLayout是一個針對RecyclerView的LayoutManager擴展, 主要提供一整套佈局方案和佈局間的組件複用的問題。java

設計思路

經過定製化的LayoutManager，接管整個RecyclerView的佈局邏輯；LayoutManager管理了一系列LayoutHelper，LayoutHelper負責具體佈局邏輯實現的地方；每個LayoutHelper負責頁面某一個範圍內的組件佈局；不一樣的LayoutHelper能夠作不一樣的佈局邏輯，所以能夠在一個RecyclerView頁面裏提供異構的佈局結構，這就能比系統自帶的LinearLayoutManager、GridLayoutManager等提供更加豐富的能力。同時支持擴展LayoutHelper來提供更多的佈局能力。android

主要功能

默認通用佈局實現，解耦全部的View和佈局之間的關係: Linear, Grid, 吸頂, 浮動, 固定位置等。
- LinearLayoutHelper: 線性佈局
- GridLayoutHelper: Grid佈局，支持橫向的colspan
- FixLayoutHelper: 固定佈局，始終在屏幕固定位置顯示
- ScrollFixLayoutHelper: 固定佈局，但以後當頁面滑動到該圖片區域才顯示, 能夠用來作返回頂部或其餘書籤等
- FloatLayoutHelper: 浮動佈局，能夠固定顯示在屏幕上，但用戶能夠拖拽其位置
- ColumnLayoutHelper: 欄格佈局，都佈局在一排，能夠配置不一樣列之間的寬度比值
- SingleLayoutHelper: 通欄佈局，只會顯示一個組件View
- OnePlusNLayoutHelper: 一拖N佈局，能夠配置1-5個子元素
- StickyLayoutHelper: stikcy佈局，能夠配置吸頂或者吸底
- StaggeredGridLayoutHelper: 瀑布流佈局，可配置間隔高度/寬度
上述默認實現裏能夠大體分爲兩類：一是非fix類型佈局，像線性、Grid、欄格等，它們的特色是佈局在整個頁面流裏，隨頁面滾動而滾動；另外一類就是fix類型的佈局，它們的子節點每每不隨頁面滾動而滾動。
全部除佈局外的組件複用，VirtualLayout將用來管理大的模塊佈局組合，擴展了RecyclerView，使得同一RecyclerView內的組件能夠複用，減小View的建立和銷燬過程。

使用

這個demo只是簡單記錄下上面黃色標記的幾種佈局的實現。git

注意

vlayout1.2.8版本中使用的recyclerview是23.1.1版本，v4是23.1.1，這個須要注意。若是項目中用到recyclerview和v4包的話，建議依賴新版本的recyclerview和v4。github

下面是vlayout的build.gradle文件的部分源碼：json

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    // compile project(':extension')
    if (project.hasProperty('useNewSupportLibrary')) {
        compile 'com.android.support:recyclerview-v7:25.2.0@aar'
        compile('com.android.support:support-v4:25.2.0@aar')
        compile 'com.android.support:support-annotations:25.2.0'
        compile 'com.android.support:support-compat:25.2.0'
        compile 'com.android.support:support-core-ui:25.2.0'
    } else {
        compile 'com.android.support:recyclerview-v7:23.1.1@aar'
        compile('com.android.support:support-v4:23.1.1@aar') {
            exclude group: 'com.android.support', module: 'support-annotations'
        }
        compile 'com.android.support:support-annotations:23.1.1'
    }

    androidTestCompile "org.robolectric:robolectric:3.0"
}

因此在項目中app目錄的build.gradle中依賴vlayout時，會有這樣的提醒：數組

效果圖

使用步驟

1、項目組織結構圖

注意事項：app

一、導入類文件後須要change包名以及從新import R文件路徑框架

二、 Values目錄下的文件（strings.xml、dimens.xml、colors.xml等），若是項目中存在，則複製裏面的內容，不要整個覆蓋ide

2、導入步驟

一、在build.gradle文件中依賴vlayout

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.why.project.vlayoutdemo"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    //Vlayout implementation ('com.alibaba.android:vlayout:1.2.8@aar') { transitive = true }
    //下面的代碼，根據實際狀況添加，若是項目中用到了下面的庫，則須要根據項目依賴高版本庫，不然就會使用vlayout中的低版本庫 //RecyclerView【由於vlayout中的recyclerview版本低，因此須要從新依賴高版本，不然app中使用recyclerview的話會直接使用vlayout中的低版本recyclerview】 implementation "com.android.support:recyclerview-v7:28.0.0" //v4 implementation 'com.android.support:support-v4:28.0.0'
}

這樣就將vlayout集成到項目中了。

3、使用方法

一、先在demo中添加測試數據文件

{
    "data": [
        {
            "modelname": "推送新聞",
            "data": [
                {
                    "image": "https://imgsa.baidu.com/news/q%3D100/sign=06d12a2732dbb6fd235be1263925aba6/b151f8198618367a8dbfe10125738bd4b31ce53c.jpg",
                    "url": "http://news.ifeng.com/a/20180120/55302258_0.shtml?_zbs_baidu_news",
                    "title": "安徽合肥：「非遺」進校園",
                    "id": "whyidzhi",
                    "order": "1"
                }
            ]
        },
        {
            "modelname": "焦點新聞",
            "data": [
                {
                    "image": "https://b.bdstatic.com/boxlib/20180120/2018012017100383423448679.jpg",
                    "url": "http://pic.chinadaily.com.cn/2018-01/20/content_35544757.htm",
                    "title": "西昌鐵路警方用表情包宣傳愛路小知識",
                    "id": "whyidzhi",
                    "order": "1"
                },
                {
                    "image": "https://b.bdstatic.com/boxlib/20180120/2018012017100311270281486.jpg",
                    "url": "http://pic.chinadaily.com.cn/2018-01/20/content_35544758.htm",
                    "title": "成都熊貓基地太陽產房全新升級",
                    "id": "whyidzhi",
                    "order": "2"
                },
                {
                    "image": "https://b.bdstatic.com/boxlib/20180120/2018012017100392134086973.jpg",
                    "url": "http://pic.chinadaily.com.cn/2018-01/20/content_35544759.htm",
                    "title": "長沙「90後」交警用手繪記錄交警故事",
                    "id": "whyidzhi",
                    "order": "3"
                }
            ]
        },
        {
            "modelname": "國際人物",
            "data": [
                {
                    "image": "http://t12.baidu.com/it/u=264843290,870648681&fm=173&s=29C043870E531CDC082897A003006015&w=218&h=146&img.JPEG",
                    "url": "http://news.163.com/18/0120/15/D8JS570V00018AOQ_all_mobile.html",
                    "title": "法總統馬克龍會見默克爾 強調歐洲改革須要德國（全文..",
                    "id": "whyidzhi",
                    "order": "1"
                },
                {
                    "image": "",
                    "url": "http://www.yidianzixun.com/article/0IBPUBcu",
                    "title": "默克爾組閣可否成功？全等這場黨代會",
                    "id": "whyidzhi",
                    "order": "2"
                },
                {
                    "image": "",
                    "url": "http://www.yidianzixun.com/article/0IBMT9yr",
                    "title": "馬克龍向默克爾表支持 強調推進歐洲改革須要德國",
                    "id": "whyidzhi",
                    "order": "3"
                },
                {
                    "image": "",
                    "url": "http://news.sina.com.cn/w/2018-01-20/doc-ifyquixe4989529.shtml",
                    "title": "德法首腦在巴黎會晤 默克爾：歐洲須要穩定的德國政府",
                    "id": "whyidzhi",
                    "order": "4"
                },
                {
                    "image": "",
                    "url": "http://news.sina.com.cn/o/2018-01-20/doc-ifyqtycx0664636.shtml",
                    "title": "德國社民黨民衆支持率創新低",
                    "id": "whyidzhi",
                    "order": "5"
                }
            ]
        },
        {
            "modelname": "圖片新聞",
            "data": [
                {
                    "image": "https://t10.baidu.com/it/u=44207055,3448633405&fm=173&s=CFF20CC150452CEC9F9C491103005092&w=218&h=146&img.JPEG",
                    "url": "http://war.163.com/18/0120/11/D8JEFM5D000181KT_mobile.html",
                    "title": "外媒稱朝鮮先遣隊取消訪韓",
                    "id": "whyidzhi",
                    "order": "1"
                },
                {
                    "image": "https://t10.baidu.com/it/u=1625316837,2876937793&fm=173&s=F507703317115D6644753AE80300E036&w=218&h=146&img.JPEG",
                    "url": "http://news.china.com/internationalgd/10000166/20180120/31985304.html",
                    "title": "狂風橫掃歐洲多國，致10人",
                    "id": "whyidzhi",
                    "order": "2"
                },
                {
                    "image": "https://t10.baidu.com/it/u=2946973968,4057971581&fm=173&s=2D216D93C2F00B9219A825E703009060&w=218&h=146&img.JPEG",
                    "url": "http://news.sina.com.cn/w/2018-01-20/doc-ifyqtycx0654102.shtml",
                    "title": "津巴布韋反對黨要人在美墜",
                    "id": "whyidzhi",
                    "order": "3"
                },
                {
                    "image": "https://t12.baidu.com/it/u=3788697896,2880168169&fm=173&s=D31A38C4D664D55FC29281010300309B&w=218&h=146&img.JPEG",
                    "url": "http://finance.ifeng.com/a/20180120/15937975_0.shtml",
                    "title": "美國政府關門 比特幣聞訊",
                    "id": "whyidzhi",
                    "order": "4"
                },
                {
                    "image": "https://t10.baidu.com/it/u=1499851317,895362806&fm=173&s=BD04DF104871339C53A88C870100E0E3&w=218&h=146&img.JPEG",
                    "url": "http://news.sina.com.cn/o/2018-01-20/doc-ifyquixe5136803.shtml",
                    "title": "剛剛，美國政府正式宣告",
                    "id": "whyidzhi",
                    "order": "5"
                },
                {
                    "image": "https://t12.baidu.com/it/u=4229963978,641890755&fm=173&s=74B218D646A08B491AAF3E9903001088&w=218&h=146&img.JPEG",
                    "url": "http://www.chinanews.com/gj/2018/01-20/8428898.shtml",
                    "title": "超三成受訪者稱中國是「新",
                    "id": "whyidzhi",
                    "order": "6"
                }
            ]
        },
        {
            "modelname": "視頻新聞",
            "data": [
                {
                    "image": "http://pic.rmb.bdstatic.com/1f01839d477aa7a3ffa36f07542f8d5b.jpg@h_660,w_370",
                    "url": "http://v.qq.com/x/page/h0527p90e2b.html",
                    "title": "杭州餐館爆炸，路過公交車20餘人受傷",
                    "id": "whyidzhi",
                    "order": "1"
                },
                {
                    "image": "http://pic.rmb.bdstatic.com/1f541422405ab18797795c0adc3318eb.jpg@h_660,w_370",
                    "url": "http://www.iqiyi.com/v_19rr7omigs.html",
                    "title": "中央措辭嚴厲批祁連山生態問題 8責任人被問責",
                    "id": "whyidzhi",
                    "order": "2"
                },
                {
                    "image": "http://pic.rmb.bdstatic.com/d46f662c1900de051da6de2eef2c485f.jpg@h_660,w_370",
                    "url": "http://v.qq.com/x/page/a0024q7bkg0.html",
                    "title": "吉林永吉 吉林市多地遭暴雨襲擊 縣城災後清理正在進行",
                    "id": "whyidzhi",
                    "order": "3"
                },
                {
                    "image": "http://pic.rmb.bdstatic.com/b9cdfca4adeb36ac1a0730f70b9d63f9.jpg@h_660,w_370",
                    "url": "http://www.iqiyi.com/v_19rr7oosfs.html",
                    "title": "40 高溫下一出租車行駛中自燃",
                    "id": "whyidzhi",
                    "order": "4"
                },
                {
                    "image": "http://pic.rmb.bdstatic.com/660e5152b144e48bbdffdad5d9fdc088.jpg@h_660,w_370",
                    "url": "http://v.qq.com/x/page/v0527bhjwh3.html",
                    "title": "徐光裕：印度航母只是二流航母",
                    "id": "whyidzhi",
                    "order": "5"
                }
            ]
        }
    ]
}

vlayout.txt

二、由於Demo中使用到了banner和圖片展示，因此還須要依賴banner和glide

參考《BannerDemo【圖片輪播圖控件】》、《GlideNewDemo【Glide4.7.1版本的簡單使用以及圓角功能】》

三、在佈局文件聲明Recyclerview控件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView android:id="@+id/vlayout_rv" android:layout_width="match_parent" android:layout_height="match_parent" android:scrollbars="none" android:clipToPadding="true" android:paddingLeft="0dp" android:paddingRight="0dp" android:requiresFadingEdge="none"/>

</LinearLayout>

四、在Acitivity中參考下面的代碼編寫基本框架（也就是邏輯處理）

package com.why.project.vlayoutdemo;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.widget.Toast;

import com.alibaba.android.vlayout.DelegateAdapter;
import com.alibaba.android.vlayout.VirtualLayoutManager;
import com.alibaba.android.vlayout.layout.GridLayoutHelper;
import com.alibaba.android.vlayout.layout.LinearLayoutHelper;
import com.alibaba.android.vlayout.layout.SingleLayoutHelper;
import com.alibaba.android.vlayout.layout.StickyLayoutHelper;
import com.why.project.vlayoutdemo.adapter.BannerLayoutAdapter;
import com.why.project.vlayoutdemo.adapter.GridLayoutAdapter;
import com.why.project.vlayoutdemo.adapter.HorizontalListLayoutAdapter;
import com.why.project.vlayoutdemo.adapter.ListLayoutAdapter;
import com.why.project.vlayoutdemo.adapter.StickyTitleAdapter;
import com.why.project.vlayoutdemo.bean.ItemBean;
import com.why.project.vlayoutdemo.bean.ModelBean;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = MainActivity.class.getSimpleName();

    private List<ModelBean> mModelBeanList;//列表數據集合

    private RecyclerView mVLayoutRV; private VirtualLayoutManager layoutManager; private DelegateAdapter delegateAdapter; private List<DelegateAdapter.Adapter> adapters; private RecyclerView.RecycledViewPool viewPool;//設置複用池的大小
    private int itemType;//一個Adapter對應一個類型，這裏經過自增長1實現惟一性

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

        initViews();
        initDatas();
    }

    private void initViews() {
        mVLayoutRV = findViewById(R.id.vlayout_rv);
    }

    private void initDatas() {
        //初始化列表數據集合
        mModelBeanList = new ArrayList<ModelBean>(); getTestDatas(); Log.e(TAG,"mModelBeanList.size()=" + mModelBeanList.size()); //初始化LayoutManager
        layoutManager = new VirtualLayoutManager(this); layoutManager.setRecycleOffset(300); mVLayoutRV.setLayoutManager(layoutManager); //設置回收複用池大小，（若是一屏內相同類型的 View 個數比較多，須要設置一個合適的大小，防止來回滾動時從新建立 View） //針對type=0的item設置了複用池的大小，若是你的頁面有多種type，須要爲每一種類型的分別調整複用池大小參數。
        viewPool = new RecyclerView.RecycledViewPool(); mVLayoutRV.setRecycledViewPool(viewPool); //加載數據，經過建立adapter集合實現佈局
        delegateAdapter = new DelegateAdapter(layoutManager, false);//必須使用false，實現每個分組的類型不一樣
 mVLayoutRV.setAdapter(delegateAdapter); setVLayoutAdapter();
    }

    /**設置適配器*/
    private void setVLayoutAdapter() {

        itemType = 0;//自增長1
        if (adapters != null) { adapters.clear(); } else { adapters = new LinkedList<>(); } //根據類型不一樣，採用不一樣的adapter並添加到集合中
        for(int i=0; i<mModelBeanList.size(); i++){
            String modelName = mModelBeanList.get(i).getModelName();
            String type = mModelBeanList.get(i).getType();
            ArrayList<ItemBean> itemBeanArrayList = (ArrayList<ItemBean>) mModelBeanList.get(i).getItemDataList();

            boolean showModelName = true;//控制是否顯示model，也就是吸頂佈局
            if(showModelName){ //stikcy佈局， 能夠配置吸頂或者吸底 //設置各個區域的複用池的大小，由於只有一個元素，因此複用池大小就設置爲1
                viewPool.setMaxRecycledViews(itemType++, 1); StickyLayoutHelper stickyLayoutHelper = new StickyLayoutHelper(); StickyTitleAdapter stickyTitleAdapter = new StickyTitleAdapter(this,stickyLayoutHelper,modelName); adapters.add(stickyTitleAdapter); } //========用來判斷分組，展示不一樣的樣式========
            //每個item對應一種樣式
            switch(type) {
                case "banner":
                    //通欄佈局——輪播圖
                    //設置各個區域的複用池的大小，設置子集合的總個數爲複用池大小
                    viewPool.setMaxRecycledViews(itemType++, itemBeanArrayList.size()); SingleLayoutHelper singleLayoutHelper = new SingleLayoutHelper();//通欄佈局，只會顯示一個組件View
                    singleLayoutHelper.setMargin(0, 0, 0, dip2px(this, 10));//設置外邊距，實現分割效果
                    BannerLayoutAdapter bannerLayoutAdapter = new BannerLayoutAdapter(this, singleLayoutHelper, itemBeanArrayList); bannerLayoutAdapter.setBannerCallback(new BannerLayoutAdapter.BannerCallback() { @Override public void clickBanner(ItemBean itemBean) { Toast.makeText(MainActivity.this,itemBean.getTitle(),Toast.LENGTH_SHORT).show(); } });//設置自定義回調，用於點擊事件監聽
 adapters.add(bannerLayoutAdapter); break;
                case "hori":
                    //通欄佈局——橫向列表
                    //設置各個區域的複用池的大小，設置子集合的總個數爲複用池大小
                    viewPool.setMaxRecycledViews(itemType++, itemBeanArrayList.size()); SingleLayoutHelper horizontalListLayoutHelper = new SingleLayoutHelper();//不使用LinearLayoutHelper
                    horizontalListLayoutHelper.setMargin(0,0,0,dip2px(this, 10));//設置外邊距，實現分割效果
                    HorizontalListLayoutAdapter horizontalListLayoutAdapter = new HorizontalListLayoutAdapter(this,horizontalListLayoutHelper,itemBeanArrayList); horizontalListLayoutAdapter.setHorizontalListCallback(new HorizontalListLayoutAdapter.HorizontalListCallback() { @Override public void clickHorizontalItem(ItemBean itemBean) { Toast.makeText(MainActivity.this,itemBean.getTitle(),Toast.LENGTH_SHORT).show(); } });//設置自定義回調，用於點擊事件監聽
 adapters.add(horizontalListLayoutAdapter); break;
                case "grid":
                    //九宮格佈局
                    //設置各個區域的複用池的大小，設置子集合的總個數爲複用池大小
                    viewPool.setMaxRecycledViews(itemType++, itemBeanArrayList.size()); GridLayoutHelper gridlayoutHelper = new GridLayoutHelper(2);//Grid佈局， 支持橫向的colspan
                    gridlayoutHelper.setAutoExpand(false);//解決單數的時候，最後一張居中顯示的問題
                    gridlayoutHelper.setMargin(0, 0, 0, dip2px(this, 10));//設置外邊距，實現分割效果
                    GridLayoutAdapter gridLayoutAdapter = new GridLayoutAdapter(this, gridlayoutHelper, itemBeanArrayList, itemBeanArrayList.size()); //設置自定義回調，用於點擊事件監聽
                    gridLayoutAdapter.setGridCallback(new GridLayoutAdapter.GridCallback() { @Override public void clickGrid(ItemBean itemBean) { Toast.makeText(MainActivity.this,itemBean.getTitle(),Toast.LENGTH_SHORT).show(); } }); adapters.add(gridLayoutAdapter); break;
                case "list":
                    //列表佈局（默認佈局）
                    //設置各個區域的複用池的大小，設置子集合的總個數爲複用池大小
                    viewPool.setMaxRecycledViews(itemType++, itemBeanArrayList.size()); LinearLayoutHelper linearLayoutHelper = new LinearLayoutHelper();//線性佈局
                    linearLayoutHelper.setMargin(0, 0, 0, dip2px(this, 10));//設置外邊距，實現分割效果
                    ListLayoutAdapter listLayoutAdapter = new ListLayoutAdapter(this, linearLayoutHelper, itemBeanArrayList, itemBeanArrayList.size()); //設置自定義回調，用於點擊事件監聽
                    listLayoutAdapter.setListCallback(new ListLayoutAdapter.ListCallback() { @Override public void clickList(ItemBean itemBean) { Toast.makeText(MainActivity.this,itemBean.getTitle(),Toast.LENGTH_SHORT).show(); } }); adapters.add(listLayoutAdapter); break;
                default:
            }

        }

        delegateAdapter.setAdapters(adapters);
    }

    /** * dp轉px * 16dp - 48px * 17dp - 51px*/
    public static int dip2px(Context context, float dpValue) { float scale = context.getResources().getDisplayMetrics().density; return (int)((dpValue * scale) + 0.5f); } /*=======================================獲取測試數據==============================================*/
    private void getTestDatas(){
        String listdata = getStringFromAssert(MainActivity.this,"vlayout.txt");
        try {
            JSONObject listObj = new JSONObject(listdata);
            JSONArray listArray = listObj.getJSONArray("data");
            for(int i=0; i< listArray.length(); i++){
                JSONObject itemObj = listArray.getJSONObject(i);

                ModelBean modelBean = new ModelBean();
                modelBean.setModelName(itemObj.getString("modelname"));
                modelBean.setType(itemObj.getString("type"));

                JSONArray childArray = itemObj.getJSONArray("data");
                List<ItemBean> itemBeanList = new ArrayList<ItemBean>();
                for(int j=0; j<childArray.length(); j++){
                    JSONObject childObj = childArray.getJSONObject(j);

                    ItemBean itemBean = new ItemBean();
                    itemBean.setId(childObj.getString("id"));
                    itemBean.setImageUrl(childObj.getString("image"));
                    itemBean.setOrder(childObj.getString("order"));
                    itemBean.setTitle(childObj.getString("title"));
                    itemBean.setUrlPath(childObj.getString("url"));

                    itemBeanList.add(itemBean);
                }

                modelBean.setItemDataList(itemBeanList);

                mModelBeanList.add(modelBean);
            }

        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    /**
     * 訪問assets目錄下的資源文件，獲取文件中的字符串
     * @param assetsFilePath - 文件的相對路徑，例如："listitemdata.txt或者"/why/listdata.txt"
     * @return 內容字符串
     * */
    public static String getStringFromAssert(Context mContext, String assetsFilePath) {

        String content = ""; // 結果字符串
        try {
            InputStream is = mContext.getResources().getAssets().open(assetsFilePath);// 打開文件
            int ch = 0;
            ByteArrayOutputStream out = new ByteArrayOutputStream(); // 實現了一個輸出流
            while ((ch = is.read()) != -1) {
                out.write(ch); // 將指定的字節寫入此 byte 數組輸出流
            }
            byte[] buff = out.toByteArray();// 以 byte 數組的形式返回此輸出流的當前內容
            out.close(); // 關閉流
            is.close(); // 關閉流
            content = new String(buff, "UTF-8"); // 設置字符串編碼
        } catch (Exception e) {
            Toast.makeText(mContext, "對不起，沒有找到指定文件！", Toast.LENGTH_SHORT)
                    .show();
        }
        return content;
    }

}

五、添加各類adapter和佈局文件

混淆配置

#Vlayout
-keepattributes InnerClasses
-keep class com.alibaba.android.vlayout.ExposeLinearLayoutManagerEx { *; }
-keep class android.support.v7.widget.RecyclerView$LayoutParams { *; }
-keep class android.support.v7.widget.RecyclerView$ViewHolder { *; }
-keep class android.support.v7.widget.ChildHelper { *; }
-keep class android.support.v7.widget.ChildHelper$Bucket { *; }
-keep class android.support.v7.widget.RecyclerView$LayoutManager { *; }