RxAndroid+Retrofit+Lambda上手项目

查看项目请点击这里：项目地址

这里lambda需要java8的支持，先来配置一下环境
在app包下的那个build.gradle中加入如下代码

compileOptions{
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

看一下build.gradle代码

apply plugin: 'com.android.application'
apply plugin: 'me.tatarka.retrolambda'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "com.fanyafeng.rxandroid"
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions{
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'com.android.support:design:23.4.0'
    compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'
    compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
    compile 'com.squareup.retrofit:adapter-rxjava:2.0.0-beta2'
    compile 'com.squareup.okhttp3:okhttp:3.3.1'
    compile 'io.reactivex:rxjava:1.1.6'
    compile 'io.reactivex:rxandroid:1.2.0'
    compile 'com.facebook.fresco:fresco:0.11.0'
    compile 'com.huxq17.xrefreshview:xrefreshview:3.0.0'
    compile 'com.android.support:cardview-v7:24.0.0'
}

看下需要加的代码的位置，再来看另一个项目目录下的build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
        classpath 'me.tatarka:gradle-retrolambda:3.2.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

这里需要加两个path，这样lambda表达式就可以用了。
因为项目和上文的一样，就把activity的代码重新发一下，其他的就不发了，代码中的注释也很详细，详情可以看代码

package com.fanyafeng.rxandroid.hong9.activity;

import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

import com.facebook.drawee.view.SimpleDraweeView;
import com.fanyafeng.rxandroid.BaseActivity;
import com.fanyafeng.rxandroid.R;
import com.fanyafeng.rxandroid.adapter.RVAdapter;
import com.fanyafeng.rxandroid.hong9.bean.BannerBean;
import com.fanyafeng.rxandroid.hong9.bean.ProductBean;
import com.fanyafeng.rxandroid.hong9.fragment.ViewPagerFragment;
import com.fanyafeng.rxandroid.hong9.network.Urls;
import com.fanyafeng.rxandroid.hong9.response.GetMainResponse;
import com.fanyafeng.rxandroid.hong9.service.ApiService;
import com.fanyafeng.rxandroid.retrofit.response.TaoBaoGetIpInfoResponse;

import java.util.ArrayList;
import java.util.List;

import retrofit.GsonConverterFactory;
import retrofit.Retrofit;
import retrofit.RxJavaCallAdapterFactory;
import rx.Observable;
import rx.Observer;
import rx.Scheduler;
import rx.Subscriber;
import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Action0;
import rx.functions.Action1;
import rx.functions.Func1;
import rx.schedulers.Schedulers;

public class LambdaRedWineActivity extends BaseActivity {

    private final static String imageUri = "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCADcASUDASIAAhEBAxEB/8QAGwAAAgMBAQEAAAAAAAAAAAAAAQIAAwUEBgf/xAA9EAACAgECBQEFBgUCBAcAAAAAAQIDBAUREiExUWFBBhMiMrEUI1JxwdEzQoGR4aHwFWKi0kNTcpKywuL/xAAaAQEAAgMBAAAAAAAAAAAAAAAAAQIDBAUG/8QANREAAgIBAgIGCQMEAwAAAAAAAAECAwQRMRIhBRNBUbHwFCIjMmFxgaHhQsHRM1JikXKi8f/aAAwDAQACEQMRAD8AwkMKhjYNQIQBAO/Ts1Y8vdWfw5Pr2ZufQ8oaWnZ/u9qbn8D5Rk/TwdbBzNNKp/Q1b6f1RNkhCHYNQngjIAAgOofyByJAGR9CMnoCQAfYPIVkgjFCwEgV9irIvqxqZXXTjCuK3lJ9EDLyqMLHlfkTUIR6v1b7Luzw+qapdqlylNOFMH93Vv08vu/oaeXlxoj3vuM1VTm/gHV9Vnql0fh4KK23XB9fzfnwZwwDzdlkrJOcnzZ0IxUVohQDCmMsAAQACgYwoJFYrGZv6F7PSzXHJyouOP1jF9Z/4MVtsao8UjYxcWzJs6utfg59F0GefJX3Jwxk/wCs/wAvB6bLyo48fc0/Oltv1Uf8lmZlxpj9nx9k48m10j4XkymtjWqplkS623bsR1MnKrwIPGxnrL9UvPlfMpa2RXJF0kVSOieeKZI48nIVKUYrjtl8sN/9X2RZl5XuWqq48d8uke3l+BcbCcd7LHxWS5yk/X/BRvsR0cPCdvrz5R8TgWme+bsu+KyT3bXIhtcCRCmiO0lFLRI1UECCZjygQgCAQhCEg1dOz+lFz8Qk/ozWPKGxp2fx7UXP4ukZP18HYwczX2dm/Yal1OnrRNMDJyIzqmqT0BzCDckAfUj6EYPQEkF9Q/1A+pIAzlzs6jT8Z35E9o9IpdZPsl3F1LUqNMxve3PeT5QrXzTfj9/Q8Lm5t+oZLvyJby6Rivlguy/f1NLMzY0LhXORmppc3q9h9R1G/Usj3t3wxj/DqT5QX6vycfoEB5yc5Tk5SerOikktEQBCFCQACAAUAwoABWN6nrNA9m/lzM+HmuqX1f7GK66NMeKRuYeHZlWcEPq+459A9m3fw5ebBqrrCt9ZeX4N3Nzdt6cd7JcnNenhfuHNzveb1UPavo5L18LwZzRr048rZdbd9Eb+XnVYtbxcP6y7/l5+RW1stiuRayuR0Tz5VIz8zLdc/cUJTyH6ekF3f7D5eXL3jxsXaV380uqr/wA+C3D0+NEN3vKb5yk+bbKSl2I62D0e7faW+74/gow8BVJzm3OyT3lKXVs63FJF7WxVJFDtvuRU0QLXMgMZoIIqCZTyYxABACQBAAkIAA29Pz/fJU2v7xdH+L/JoHlU2mmns10aNvAzvtMVXY9rV/1HcwczrPZz38TTuq4fWjsdwA7g/qdM1yAZAbkgm5narq1OlUbz+O6f8OpPnL9l5E1jWatLq4VtZkzXwVfrLsvqeIvvtyb5332Oy2fWT+i7Lwc7NzlSuCHveBsU0ufN7DZWVdm5MsjInx2S5dlFdkvRFJGA8/KTk9Xub6WnJEAEBBIABAQCAIAAgEm3sk23y5DRjKc1GEXKUnskvVntdC9noYEFmZvC79t1F9K/8mC++NMdXv3G7hYNmVPSPKK3fcU6B7ORx1HNz4r3nzQrl0h5fk0MzNd+9db2q9X+L/BMzLeS+GO6q7esvz/Y5GY6MaUpdddv2LuNrN6Qrrr9Fw+Ue19r8/8AnIRiPqOxH1OgcIrZmZWXZda8XDfxrlZaukPC8/QORlWZlrxcOTUU9rLl6eI+fJ34eDXi1KMIpJGJy12O50f0bxaW3Ll2Lv8AwUYWBDGrSS59W31bOprYua2K5FTtyKZFUi6RTIGNlT6kC1zICh2oIqCZTyIxAB3ACQBAAkAQAJIycZKUW00900AgT05oG/g5scqHDLlauq7+UdR5eE5VzU4PaS5pm9h5kcqvtOPzR/VHfwsxWrgn73iaV1XDzWx0sx9a1yvTYe5p2nlyXKL6QXeX6L1Ktc19YPFjYrUspr4n1VX5934/uePlKUpynKTlOT3lKT3bfdlM3PVfs69/AtTRxetLYNlk7bZ22zlOyb3lOXVsRhYDhNt82bxAEIyCSA9CAZAIAIAADV1zusjXXFznJ7KKXNsaii3JujTTBzsk9lFHu9I0WjRcf397Ushr4pfh8I178hVLRc29kb+DgSyXxN6QW78+UVaJoNWk0/a8txeRtvu+la7LyXZWVLJltzjWnyj38smRkTyJ7y5RXyw7eX5KGRj4rUutu5y8DJn9IxcPRsXlWvv5+4rEYzEk1GLcmklzbfobxxRWZF19mp2PHxZOOOntZav5/EfHkNllmrz91TvHDT2lLo7f/wA/U2MbFhRWoxikkYpS12PRdHdF8Ol16+S/n+CnFwq8aqMYRSS7HQ1sOxGQdqT1KpFciyRXIGNlUiqRbIqkQY2VPqQL6kBQ0szCydPyXj5dUqrUk+F9mUH2D2h9n8PX9OU6Zx4o7+6tXPgfZ+H6nyXLxL8DKsxsmtwtrezT+q7o1cHOhlQ12kt0eRalF8Mt/H5FQRQm+AkAQAJCbkAIQBAAkU5w3ddkq5bNKUeqAAlNp6oaamBdRPHtcLOb68X4vJWb2RRDIq4J/mpLqmYdtU6bXXNbSX9mu6KsuhCMBCCSACwAEAQhAAXYuLdmZEaKIOdkuiXp5Y2FhX6hkxox4cU31fol3Z73T9OxdBxOXx3S+aXrN9l4Na/I6v1Y85PsOjg4Dv1ssfDWt3/Aml6VjaFi+8m1O+S2lPbm32Ql908izjnyS+WPpH/JLbZ3WOdj5+iXSKKmWxsXgfWWc5P7Fc/pFWrqKFw1r7/Pz8WBisZlN11dFUrbZqEIrdyfobhyUteSJZOFcJTnJRhFbuT5JIyH73WbNkpQwk+SfJ2+X48DRru1i6M7YuvEi94VPrLzL9jcpojVBJLbYxN6/I9R0d0Wqkrb163Yu75/Erox40wSikti1jsrZB15PURiSHZWwY2VyK5FkiqQKMrkVSLZFUiDGyt9SEfUgKH2vDy54d3FFOVcv4kO/leSn2m9m8fXcGORjyirUt6bf/q/H0ETOvCzZYdjTTlRP54fqv8AfM5/SGFNT9KxvfW6/uX8nkotSXBL6Pu/B8hvotxcidF9brtrfDKL6plZ9U9q/ZerV8ZZeI4/aFH7ufpNfhb+jPlllc6bZVWwlCyD4ZRktmn2NnCzYZVfFHftXcRzT4ZboBNwENwkbcBNybgEIDcgAQEAAEoycaOTXwvlJc4y7FwADz9kJ12OE1tJdUKbWXixyYdpr5Zfo/BizjKE3CSakuTXYqyyYGBhAQSQ6tP07I1PJVFEef8ANJ9IruyzS9KyNVyVVStor57H0iv3Pd0UYuiYkcfHhvN8+fWT7s1b8hxfV185M6eFgqyPX3vhrX3+Xn4IXEw8XQsNV1Litl1f803+xzWWStsc5veT/svCJOUpzc5vim+rEZlxsVVetLnJ9pr9IdIvJ0rrXDWtl/JG+orZGc+Xl1YdLttk9uiS5uT7LybTehzoxcmktw5ORVi0yuumowj69/CXqzNpx79VvjfkxcKIveql+nl939BsbEv1HIjlZi2Uf4dPpBfq/Ju11quKSRib1PWdHdGLGStt5z8PyLVTGuKSQzGYjZB029RWIxmxGwUYjK5DsrkCjEkVyHZXIFGVyK5FkiqRBRlb6kI+pAUPsCY6ZSmOmbB4478HO+yyddvxY0/mX4fK8dzJ9r/ZSOoV/bcNJ5Kjumulsez89mdKZ3afnrHX2e/njS9X/I/2+hxM7Dsps9MxVz/Uu/4/Px+e+RNTSjJ6NbPz2HxqUZQk4yTjJPZprZpg3Po/tl7JPI4s/ChvkJbyjH/xV/3fU+bvk9n1N7Ey68qtWQITerjLk0HcgNybm0SHcgNyABBuQG4AQE3AAE5czFWRHijsrV0ffwzoJuQDz8k4ycWmpJ7NPqjQ0jR79WyOGG8aYv47GunheTotw6ci+uVspQW6U5RXNxPYRtxsLEhRgqO3Dya6Jd33Zq5FliahWubOngUUTUrsiWkY9nawwjj6RixxcWC4tun6s423KTlJuUn1b9QPdttttt7tvqwMyY+NGla7ye7NfP6Qnly0XKC2XnyiMVk3Ek5OcaqoOy6fywXr5fZeTPOcYRcpPRI06qp2zUILVsozc2rCq47N5Sk9oVx6zfZHJh4F2XkLLzdnP+SC+Wtdl+5fRo+RDNndqHxZPTl8sV2j4NeMFBbIxKxWJSi+R67o/o6OIuOfOfh8v5FhWoR2SC2FsVsk6DYGIwsRgqwMrYzYjYKMVlcmO2VsFGIyuQ8mVyBRiSKpFkiqRBRiMgH1ICh9cTHTKEx0zYPHlyYdypMZMA1NOzowisTJf3EuUJv+R9vy7djy3tn7JS47NQwq/vPmtrivnX4l57o1t01szU07OjZCOFlS+F8qrG+afon+n9jg5mNPDseXjLl+qP7r9/8AZlXtEk/eWz/ZnxUh7b2y9k5Y1lmfh1/D811cV/1x8d0eI3Opj5MMitWQfJlU9eT3CTcG4NzMSHcgCbgEIDcm4BAEACQnRi5Tolwy51vr48nMAENam8pKUU000/UjZlYmW6XwTf3b/wBDpvyrJXxxMOKtyprfn8tcfxS/RepdPUxtaBycqVc44+PD32VZ8le/JL8Un6L6+hu6BpstP4rb7Hddbztm19F6JdhdH0WGDBzk3ZfY+Ky2XWT/AN+hspKK5GO+mF1brsWqZlounTNWVvRovzMGvNoTi0ppbwl+n5HmrYTqslXNcMo8mj0VN/uns/kfXx5BqODHMq44bK1L4X38Hnqp2dG29VZzg9n5+68v2OHmRyYarftR5psRsacZQk4yTUk9mn6CNnfTTWqNpgbEbC2I2CjAxGwtiNgqxWxGM2VsFGK2VsZsrkwUYsmVSHkyuRBRiPqQDfMgKH1ZSLFI51IsTNg8iXJhTKkxlIEFu5Hs1s+jK9xtwDawM2OXXHDy5fedKrX6+H5+p4D2v9lZaddZm4le1G+9tcV8n/Mv+X6Hpd9zZxMuGpU/ZMpr7Qk+CbX8Rdn57o8/k0T6PseTQvZv3l3fFfDw+Rm/q/8AJff4P9j4kTc9N7V+zE9Jvnk41b+yt/FD/wAp/wDb2PLnXpuhdBTg9Uyieo24NwE3MpYO4Abk3ACDcG5NwCE3ALj0ZGp5LxcN8Ki9rb9t1Dwu8voBsCuF+dlfZMNJ2L+JY1vGpee78HttH0ajTcdQgm5PnOcucpPu2PpOkY+m40aqYbJc23zbfdv1Zp9C65GNvUnRAbA2K2ARstoyPdPhk/gfr2KGxGzBkY8MitwmZ8e+dE1OBdqenrKh72pJXJf+5HmpbptNbNcmmemxsng2rm/h9H2ObVdO9+nfSvvV80V/N/k4ePdZg2ej3+72Pz2eB7DHyIZNfHD6nn2xGwtitncMjA2VtjNlbZJVgbK2xmxGwUYsmVyYzZXJkFGLJlUmPJlcmCjFfUgrfMgKH1FSHUjnUh1IznkjoUhlIoUhlIAvUg8RSpDcRILNw8XNNNpp7pp80yviJuQ1ryYN6i+rWMaWNkKH2lRa5rlZH15fVHzH2m9nLNGyXbVGTxJS2W/Wt/hf6M9jGcoyjKMnGUXvGS6pmypUa7hzpuhB5CjtOD6WR/3/AGPP21z6Ms62vnU91/b+PAzadbzXveP5Piu4NzZ9odBt0XKbipSxZvaEn1i/wvz9TF3O1XZGyKlF8mUTTWqDuDcG5Ny5IdwA3HwMC7W7eGtyhhJ7TtXJ2eI+O7/sSlqG9BcPEv1fIdOM3CiL2tvX/wAY+fPoe603TaNPxoU01qEIrZJDYODTh0QqqrjCEVsklyR2bltjG3qHfYDYGxWwAtitgbFbBJGxWwNitkAjZ0Y2TttXN/8Apb+hyNiNmtlYsMmvgl9H3Gzi5U8azjj9V3k1XTuPfIoj8XWcV6+TBbPUY+Txfdzfxej7mZqun8O+RSuXWcV6eTk4uRPGn6Nf9H57PA9bVdC+CsgY7YjYWxGztBsDYjYWytsgowNlcmM2VtgoxZMrkxpMrkwUbFb5kA2QFT6UpDqR5n2e9pI6snRkKFWZHd8MflnHvH8vVf1PQqRmTPKtaHSpDKRzqQ6kSQXqQykUKQ3ECC7iJxFSkHiALdxoWzqsjZXJxnF7xkvQp4icREoqScZLVMLVc0bl1eN7Q4FkLKou3h2tqf8AMu6/RnyrXNFu0bL4Jbyom37uzbr4flHvKr7KLo3VS4Zx6P8AR+DTzcXE9otNs3rTk1tbV6p9157M4DjLoyzlzql/1/Hd/pmdrrfXj73au/4r4+J8c3A2km29kurO3WdMt0bJlXc96tnKFr5KUf0a9SrS9Is1ecbb4yhhJ7xra2dvl9o+PX1O5CSmtY7GPiWmomm6ZbrdilJShgLq+ju/aP1/I93i4teNVGEIqMYrZJLoTHohTBRikkuXIv3MhTcbcVsXcDYJGbFbFbA2AFsVsDYrZAI2K2BsVsAjYjZGxGwSRs6qMn3i4J/P9TibEctuaezXY1MvFhkw0e/YzbxMuePPVbdqKNTwPct3Ur7t/Ml/L/gymz01WQrouE9uLbmu6MXUcJ48nZWvun/0mhiZM65ej37rbz4Hp42RtipwfJme2I2FsRs6hVsDZW2FsrbBVsEmVthbEkwY2wN8yCN8yArqY9Vs6bYW1TlCyD4oyj1T7n0b2e9oIavR7u3hhmVr44LpJfij48eh813LaMi3Gvrvosddtb4oyXoWT0PNtan2JSHUjC0LXKtXxd+UMmtL3te/TyvD/wAGupGQxtHQpDKRQpDKQILuIPEU8QeIkF3EHiKeIPEAW8QP+JLSlLOldCmFUd5ym9o8PZnJl5uPgYs8nJtVdUFzk/8ARJerfojz8a8nXsqGVnVurFrlxY+I/R+k595eOi/PmUnCNkXCS1TJTcXqjr1HKs9sM6ORbjSxtLrkp04018Vsvxz7eI/1fPprU1RriklsLVXGuOyRZuVpphTBVwWiQk3JuT7R9wbibg4jIQO5CtiuQvEAO2K2K2K2AM2K2K2K5AkZsRsDYjYAWxGyNiNkAjYjZHIrcgSHiaaaezXRnTC6N8HGSW+3xR7nE2JxuMlJPZo08vEjkR/yWxuYeXLHl/i9zkz8R40+KPOp9H28HA2eiVkMipxklzW0omHm40sazlzg/lZq4mTLXqbfeR6FSjOKlHZnM2VyYZMrbOiUbA2VyYZMRsFWwNkEb5kBQxtw7le4yZJ586cTLvwsmvIx58FsHyfo+6fdM+kaPrFOrYnva/htjytqb5wf6p+jPl+5qaCs7/ilc8DlOPzuXy8PqpeCUyslqfT1IZSOSu3jXTaS6rsWqRkMZ0cQeIoUhuIAu4jnztQx9OxZZGTPhgnsklvKcn0jFerZz6hqdGm43vbm25PhrrhzlZLtFf72MnFxMjPy1n6js7ktqqoveFMX6Lu+79fyAHox8nVsuGdqMeFQe9GNvvGry+8/Pp0RvVxUEkiqCUFsh+IEFvEDiK+InEAWcQOIr4gcQJLHIVyE4gOQA7kK5CuQrkAM2K5CuQrkQBnIRyA5COQJGchHIDkI5ABcityI5CNkEkbEbA5CNgBU3CXFF7NF0pV5NLjJbp8muxyNiqxwlxR6/U0svFVy4o+8jdxMp0vR+6zgyqJY9nC+cX8r7nM2blnu8mlp9H/dMxMiqVFjjL+j7mPFyHP1LPeR2201qtipsrbC2VyZuGNsm5BGyArqY2425WMuhY4R36dp12pZCrqW0V8830ij3un4dGn4ypojsvWT6yfdnJplNdGBVGqCinFN7erO+LLJaGNvUvbe6lF7SX+vhltdqmt+jXJp+jOZMm7V1bX8zaflbFip2qRyahqdWn1Rcoysus5VUw+ax/ou79C+PVGLgQjfddlWrjvlOUHN9VFPZJdl+QA+FhXX5Lzs+SsypLZJfLVH8MfHnqzahtFcimHKJZuCC3iJxFQdwCziJxFe4N3sAWcQOIQG/IAfiA5CbgAHchXIVsG4JGchXIVisALkK5AYjIAXIRsj6iMEhcityIxGARyEkySZXIgkjkVyYWVsAMbHXLdf1Xce6MMmnZ9PR+qZzsNLfvNt+TXM0cuhNdbHk0b+HkSjLq3szMuhKqbjLqv9SiTNXPinjuTXNPkzIZfHtdkNXudOQGyCkM5TU//Z";

    private final static String headerUri = "http://vinos.b0.upaiyun.com/avatar/default/0247662e-21bf-4662-89fd-d7ebc0600a4e.jpg";

    private RVAdapter rvAdapter;
    private RecyclerView rvRedWine;
    private List<ProductBean> productBeanList = new ArrayList<>();

    private SimpleDraweeView sdvDrawerHead;
    private SimpleDraweeView sdvUserHead;
    private DrawerLayout layoutDrawer;
    private NavigationView layoutNavigationView;

    private List<Fragment> fragmentList;
    private ViewPager staggerViewpager;
    private PagerAdapter pagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_red_wine);
        title = "红酒";
        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(view -> Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                .setAction("Action", null).show());
        initView();
        initData();
    }

    private void initView() {
        rvRedWine = (RecyclerView) findViewById(R.id.rvRedWine);

        layoutDrawer = (DrawerLayout) findViewById(R.id.layoutDrawer);
        layoutNavigationView = (NavigationView) findViewById(R.id.layoutNavigationView);
        staggerViewpager = (ViewPager) findViewById(R.id.staggerViewpager);
        fragmentList = new ArrayList<>();
        pagerAdapter = new PagerAdapter(getSupportFragmentManager(), fragmentList);
        initMainData();
    }

    private void initData() {
        rvAdapter = new RVAdapter(this, productBeanList);
        rvRedWine.setHasFixedSize(true);
        rvRedWine.setLayoutManager(new GridLayoutManager(this, 2));
        rvRedWine.setAdapter(rvAdapter);
        layoutNavigationView.inflateHeaderView(R.layout.layout_drawer_head);
        sdvDrawerHead = (SimpleDraweeView) layoutNavigationView.getHeaderView(0).findViewById(R.id.sdvDrawerHead);
        sdvDrawerHead.setImageURI(Uri.parse(imageUri));
        sdvDrawerHead.setAspectRatio(1.33f);
        sdvUserHead = (SimpleDraweeView) layoutNavigationView.getHeaderView(0).findViewById(R.id.sdvUserHead);
        sdvUserHead.setImageURI(Uri.parse(headerUri));
        sdvUserHead.setAspectRatio(1.0f);
        layoutNavigationView.inflateMenu(R.menu.menu_drawer_nav);
        onMenuCheck(layoutNavigationView);
    }

    private void initMainData() {
        staggerViewpager.setAdapter(new PagerAdapter(getSupportFragmentManager(), fragmentList));
        staggerViewpager.setCurrentItem(0);

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(Urls.HTTP_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                .build();
        ApiService apiService = retrofit.create(ApiService.class);
        apiService.getMainData()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(getMainResponse -> {
                    Log.d("redwine", "请求成功：" + getMainResponse.state);
                    Log.d("redwine", "请求成功：" + getMainResponse.data.banner.get(0).id + "数组长度：" + getMainResponse.data.banner.size());
                    Log.d("redwine", "请求成功：" + getMainResponse.data.products.get(0).cn_name);
                    productBeanList.addAll(getMainResponse.data.products);
                    rvAdapter.notifyDataSetChanged();

                    Observable.just(getMainResponse.data.banner)//相当于.next
                            .observeOn(AndroidSchedulers.mainThread())//观察在主线程,LooperScheduler
                            .flatMap(Observable::from)//from泛型数组
                            .subscribe(LambdaRedWineActivity.this::bindViewpager);
                }, throwable -> {//必须是抛出异常的方法
                    Log.d("redwine", "异常：" + throwable.toString());
                }, () -> Log.d("redwine", "fragmentList长度：" + fragmentList.size()));
    }

    private void bindViewpager(BannerBean bannerBean) {

        ViewPagerFragment viewPagerFragment = new ViewPagerFragment();
        Bundle bundle = new Bundle();
        bundle.putString("img", bannerBean.img);
        viewPagerFragment.setArguments(bundle);
        fragmentList.add(viewPagerFragment);
        staggerViewpager.setAdapter(pagerAdapter);
        Log.d("lambda", "fragmentList长度：" + fragmentList.size());
    }

    private void onMenuCheck(NavigationView navigationView) {
        navigationView.setNavigationItemSelectedListener(item -> {
            switch (item.getItemId()) {
                case R.id.nav_menu_home:
                    Toast.makeText(LambdaRedWineActivity.this, "点击第一个", Toast.LENGTH_SHORT).show();
                    break;
                case R.id.nav_menu_categories:
                    break;
                case R.id.nav_menu_feedback:
                    break;
                case R.id.nav_menu_setting:
                    break;
            }
            item.setChecked(true);
            layoutDrawer.closeDrawers();
            return true;
        });
    }

    class PagerAdapter extends FragmentPagerAdapter {
        private List<Fragment> fragmentList;

        public PagerAdapter(FragmentManager fm, List<Fragment> fragmentList) {
            super(fm);
            this.fragmentList = fragmentList;
        }

        @Override
        public Fragment getItem(int position) {
            return fragmentList.get(position);
        }

        @Override
        public int getCount() {
            return fragmentList.size();
        }
    }
}