您的位置: 首页  >  文章  >  使用XRecyclerView和Fresco实现切换视图列表展示数据和加载图片

使用XRecyclerView和Fresco实现切换视图列表展示数据和加载图片

分类: 文章 • 2022-10-02 08:34:54

使用XRecyclerView和Fresco实现切换视图列表展示数据和加载图片     使用XRecyclerView和Fresco实现切换视图列表展示数据和加载图片

使用的权限和依赖

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
implementation rootProject.ext.dependencies["appcompat-v7"]
implementation rootProject.ext.dependencies["constraint-layout"]
implementation rootProject.ext.dependencies["retrofit2"]
implementation rootProject.ext.dependencies["converter-gson"]
implementation rootProject.ext.dependencies["rxjava2"]
implementation rootProject.ext.dependencies["rxjava2:rxandroid"]
implementation rootProject.ext.dependencies["dagger"]
annotationProcessor rootProject.ext.dependencies["dagger-compiler"]
implementation rootProject.ext.dependencies["adapter-rxjava"]
implementation 'com.facebook.fresco:fresco:0.12.0'
// 支持 GIF 动图，需要添加
implementation 'com.facebook.fresco:animated-gif:0.12.0'
implementation 'com.android.support:support-v4:27.1.1'
implementation 'com.sunfusheng:marqueeview:1.3.3'
implementation 'com.jcodecraeer:xrecyclerview:1.3.2'
implementation 'com.youth.banner:banner:1.4.10'
implementation 'com.android.support:design:27.1.1'
implementation 'com.scwang.smartrefresh:SmartRefreshLayout:1.0.4-7'
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

build.gradle

apply from: "config.gradle"

config.gradle

ext {
    android = [
            compileSdkVersion: 27,
            applicationId    : "com.bwie.test.mylistpicture",
            minSdkVersion    : 15,
            targetSdkVersion : 27,
            versionCode      : 1,
            versionName      : "1.0"
    ]

    dependencies = [
            "appcompat-v7"     : "com.android.support:appcompat-v7:27.1.1",
            "constraint-layout": "com.android.support.constraint:constraint-layout:1.1.0",
            "retrofit2"        : "com.squareup.retrofit2:retrofit:2.4.0",
            "converter-gson"   : "com.squareup.retrofit2:converter-gson:2.4.0",
            "adapter-rxjava"  :  "com.squareup.retrofit2:adapter-rxjava2:2.4.0",
            "rxjava2"          : "io.reactivex.rxjava2:rxjava:2.1.13",
            "rxjava2:rxandroid": "io.reactivex.rxjava2:rxandroid:2.0.2",
            "dagger"           : "com.google.dagger:dagger:2.8",
            "dagger-compiler" : "com.google.dagger:dagger-compiler:2.7"

    ]
}

activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity">

    <RadioGroup
        android:id="@+id/rg"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:orientation="horizontal"
        android:layout_height="60dp">
        <RadioButton
            android:id="@+id/rbList"
            android:layout_weight="1"
            android:layout_width="0dp"
            android:text="列表"
            android:gravity="center"
            android:button="@null"
            android:layout_height="match_parent"/>
        <RadioButton
            android:id="@+id/rbPicture"
            android:layout_weight="1"
            android:layout_width="0dp"
            android:text="图片"
            android:gravity="center"
            android:button="@null"
            android:layout_height="match_parent"/>
        <Button
            android:id="@+id/btnEliminate"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#f1f1f1"
            android:text="清除缓存"/>
    </RadioGroup>

    <FrameLayout
        android:id="@+id/flContent"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/rg" />

</RelativeLayout>

fragment_list

<?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:orientation="vertical">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="10dp"
            android:textSize="18dp"
            android:text="列表"/>
    </RelativeLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginTop="1dp"
        android:background="#000000"/>

    <com.jcodecraeer.xrecyclerview.XRecyclerView
        android:id="@+id/xrecy_view"
        android:layout_marginTop="4dp"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </com.jcodecraeer.xrecyclerview.XRecyclerView>

</LinearLayout>

fragment_mypicture

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="12dp"
            android:textSize="18dp"
            android:text="图片"/>
    </RelativeLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginTop="1dp"
        android:background="#000000"/>

    <Button
        android:id="@+id/btn_Load"
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:layout_marginTop="18dp"
        android:background="#fdfdfd"
        android:layout_gravity="center_horizontal|center_vertical"
        android:text="加载图片"/>

    <ImageView
        android:id="@+id/iv_img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"
        android:layout_marginTop="20dp"
        android:layout_gravity="center_horizontal"/>

</LinearLayout>

item_mylist

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <com.facebook.drawee.view.SimpleDraweeView
        android:layout_width="100dp"
        android:id="@+id/img"
        android:layout_height="100dp" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:orientation="vertical">
        <TextView
            android:id="@+id/tv1"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:textSize="20sp" />
        <TextView
            android:id="@+id/tv2"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:textColor="#CCCC99" />
    </LinearLayout>
</LinearLayout>

MainActivity

import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;

public class MainActivity extends AppCompatActivity {
    //创建5个Fragment
    private FrameLayout mFlContent;
    private MyListFragment myListFragment;
    private MyPictureFragment myPictureFragment;
    private RadioGroup mRg;
    private FragmentManager fragmentManager;
    private RadioButton mRbList;//列表
    private RadioButton mRbPicture;//图片
    private Button mBtnEliminate;//清除缓存

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //隐藏原有标题
        getSupportActionBar().hide();
        initView();
        fragmentManager = getSupportFragmentManager();
        myListFragment = new MyListFragment();
        myPictureFragment = new MyPictureFragment();
        fragmentManager.beginTransaction().replace(R.id.flContent, myListFragment).commit();
        setListenter();
    }

    private void setListenter() {
        mRg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                switch (checkedId){
                    case R.id.rbList:
                        fragmentManager.beginTransaction().replace(R.id.flContent, myListFragment)
                                                  .commit();
                        break;
                    case R.id.rbPicture:
                        fragmentManager.beginTransaction().replace(R.id.flContent, myPictureFragment)
                                                  .commit();
                        break;
                }
            }
        });
    }

    private void initView() {
        mFlContent = (FrameLayout) findViewById(R.id.flContent);
        mRbList = (RadioButton) findViewById(R.id.rbList);
        mRbPicture = (RadioButton) findViewById(R.id.rbPicture);
        mBtnEliminate = (Button) findViewById(R.id.btnEliminate);
        mRg = (RadioGroup) findViewById(R.id.rg);
    }
}

MyListFragment

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.bwie.test.adapter.MyAdapter;
import com.bwie.test.bean.MyListBean;
import com.bwie.test.component.DaggerHttpComponent;
import com.bwie.test.module.HttpModule;
import com.bwie.test.mylistpicture.base.BaseFragment;
import com.bwie.test.mylistpicture.contract.MobileContract;
import com.bwie.test.mylistpicture.presenter.MobilePresenter;
import com.jcodecraeer.xrecyclerview.XRecyclerView;
import java.util.ArrayList;
import java.util.List;

public class MyListFragment extends BaseFragment<MobilePresenter> implements MobileContract.View{
    private View view;
    private XRecyclerView mXrlv;
    private boolean isRefresh = true;
    private MyAdapter adapter;

    @Override
    public int getContentLayout() {
        return R.layout.fragment_mylist;
    }

    @Override
    public void inject() {
        DaggerHttpComponent.builder()
                .httpModule(new HttpModule())
                .build()
                .inject(this);
    }

    @Override
    public void initView(View view) {
        mXrlv = (XRecyclerView) view.findViewById(R.id.xrecy_view);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
        mXrlv.setLayoutManager(linearLayoutManager);
        mPresenter.getMobile();
        mXrlv.setLoadingListener(new XRecyclerView.LoadingListener() {
            @Override
            public void onRefresh() {
                isRefresh = true;
                mPresenter.getMobile();
            }

            @Override
            public void onLoadMore() {
                isRefresh = false;
                mPresenter.getMobile();
            }
        });
    }

    @Override
    public void onSuccess(MyListBean mobileBean) {
        List<MyListBean.NewslistBean> tlist = new ArrayList<>();
        tlist.addAll(mobileBean.getNewslist());
        if (isRefresh){
            adapter = new MyAdapter(getContext(), mobileBean.getNewslist());
            mXrlv.setAdapter(adapter);
            adapter.refresh(tlist);
            mXrlv.refreshComplete();
        } else {
            if (adapter != null){
                adapter.loadMore(tlist);
                mXrlv.loadMoreComplete();
            }
        }
        if (adapter == null){
            return;
        }
    }
}

MyPictureFragment

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.util.LruCache;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import com.bwie.test.utils.ExternalStorageUtils;
import com.bwie.test.utils.HttpUtils;
import java.lang.ref.SoftReference;
import java.util.LinkedHashMap;

public class MyPictureFragment extends Fragment implements View.OnClickListener{
    private Button btn_download;
    private ImageView iv_img;
    private MyLruCache myLruCache;
    private LinkedHashMap<String, SoftReference<Bitmap>> cashMap = new LinkedHashMap<>();
    private static final String TAG = "MainActivity";
    private String imgPath = "http://img.taopic.com/uploads/allimg/140729/240450-140HZP45790.jpg";
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            Bitmap bitmap = (Bitmap) msg.obj;
            iv_img.setImageBitmap(bitmap);
            Toast.makeText(getContext(), "从网络上下载图片", Toast.LENGTH_SHORT).show();
        }
    };
    private View view;
    /**
     * 加载图片
     */
    private Button mBtnDownload;
    private ImageView mIvImg;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, 
                                    @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_mypicture, container, false);
        initView(view);
        int totalMemory = (int) Runtime.getRuntime().maxMemory();
        int size = totalMemory / 8;
        myLruCache = new MyLruCache(size);
        btn_download.setOnClickListener(this);
        return view;
    }

    private void initView(View view) {
        btn_download = (Button) view.findViewById(R.id.btn_Load);
        iv_img = (ImageView) view.findViewById(R.id.iv_img);
    }

    @Override
    public void onClick(View v) {
        Bitmap b = getImgCache();
        if (b != null) {
            iv_img.setImageBitmap(b);
        } else {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    if (HttpUtils.isNetConn(getContext())) {
                        byte b[] = HttpUtils.getDateFromNet(imgPath);
                        if (b != null && b.length != 0) {
                            Bitmap bitmap = BitmapFactory.decodeByteArray(b, 0, b.length);
                            Message msg = Message.obtain();
                            msg.obj = bitmap;
                            handler.sendMessage(msg);
                            myLruCache.put(imgPath, bitmap);
                            Log.d(TAG, "run: " + "缓存到强引用中成功");
                            boolean bl = ExternalStorageUtils.storeToSDRoot("haha.jpg", b);
                            if (bl) {
                                Log.d(TAG, "run: " + "缓存到本地内存成功");
                            } else {
                                Log.d(TAG, "run: " + "缓存到本地内存失败");
                            }
                        } else {
                            Toast.makeText(getContext(), "下载失败！", Toast.LENGTH_SHORT).show();
                        }
                    } else {
                        Toast.makeText(getContext(), "请检查你的网络！", Toast.LENGTH_SHORT).show();
                    }
                }
            }).start();
        }
    }

    /**
     * 从缓存中获取图片
     */
    public Bitmap getImgCache() {
        Bitmap bitmap = myLruCache.get(imgPath);
        if (bitmap != null) {
            Log.d(TAG, "getImgCache: " + "从LruCache获取图片");
        } else {
            SoftReference<Bitmap> sr = cashMap.get(imgPath);
            if (sr != null) {
                bitmap = sr.get();
                myLruCache.put(imgPath, bitmap);
                cashMap.remove(imgPath);
                Log.d(TAG, "getImgCache: " + "从软引用获取图片");
            } else {
                bitmap = ExternalStorageUtils.getImgFromSDRoot("haha.jpg");
                Log.d(TAG, "getImgCache: " + "从外部存储获取图片");
            }
        }
        return bitmap;
    }

    public class MyLruCache extends LruCache<String, Bitmap> {
        public MyLruCache(int maxSize) {
            super(maxSize);
        }

        //返回每个图片的大小
        @Override
        protected int sizeOf(String key, Bitmap value) {
            return value.getRowBytes() * value.getHeight();
        }

        @Override
        protected void entryRemoved(boolean evicted, String key, Bitmap oldValue, Bitmap newValue) {
            if (evicted) {
                SoftReference<Bitmap> softReference = new SoftReference<Bitmap>(oldValue);
                cashMap.put(key, softReference);
            }
        }
    }
}

app文件夹下MyApp

import android.app.Application;
import com.facebook.drawee.backends.pipeline.Fresco;

public class MyApp extends Application{
    @Override
    public void onCreate() {
        super.onCreate();
        //初始化fresco
        Fresco.initialize(this);
    }
}

base文件夹下BaseContract

public interface BaseContract {
    interface BasePresenter<T extends BaseView>{
        void attchView(T view);
        void detachView();
    }

    interface BaseView{
        void showLoading();
        void dismissLoading();
    }
}

BaseFragment

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.bwie.test.inter.IBase;
import javax.inject.Inject;

public abstract class BaseFragment <T extends BaseContract.BasePresenter> extends Fragment 
                             implements IBase,BaseContract.BaseView {
    @Inject
    protected T mPresenter;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        inject();
        if (mPresenter!=null){
            mPresenter.attchView(this);
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (mPresenter != null) {
            mPresenter.detachView();
        }
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
                                 @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(getContentLayout(), null);
        initView(view);
        return view;
    }

    @Override
    public void showLoading() {
    }

    @Override
    public void dismissLoading() {
    }
}

BasePresenter

public class BasePresenter <T extends BaseContract.BaseView> implements  
                                            BaseContract.BasePresenter<T> {
    protected T mView;

    @Override
    public void attchView(T view) {
        this.mView=view;
    }

    @Override
    public void detachView() {
        if (mView!=null){
            mView=null;
        }
    }
}

contract文件夹下MobileContract

import com.bwie.test.bean.MyListBean;
import com.bwie.test.mylistpicture.base.BaseContract;

public interface MobileContract {
    interface View extends BaseContract.BaseView{
        void onSuccess(MyListBean mobileBean);
    }
    interface Presenter extends BaseContract.BasePresenter<View> {
        void getMobile();
    }
}

presenter文件夹下MobilePresenter

import com.bwie.test.bean.MyListBean;
import com.bwie.test.mylistpicture.base.BasePresenter;
import com.bwie.test.mylistpicture.contract.MobileContract;
import com.bwie.test.net.MobileAPi;

import javax.inject.Inject;
import io.reactivex.Observer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;

public class MobilePresenter extends BasePresenter<MobileContract.View> implements 
                                    MobileContract.Presenter {
    private MobileAPi mobileAPi;

    @Inject
    public MobilePresenter(MobileAPi mobileAPi) {
        this.mobileAPi = mobileAPi;
    }

    @Override
    public void getMobile() {
        mobileAPi.getMobile()
                .observeOn(AndroidSchedulers.mainThread())
                .subscribeOn(Schedulers.io())
                .subscribe( new Observer<MyListBean>() {
                    @Override
                    public void onSubscribe(Disposable d) {

                    }

                    @Override
                    public void onNext(MyListBean listsBean) {
                        if (mView!=null){
                            mView.onSuccess( listsBean );
                        }
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                } );
    }
}

adapter文件夹下MyAdapter

import android.content.Context;
import android.support.annotation.NonNull;
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.bwie.test.bean.MyListBean;
import com.bwie.test.mylistpicture.R;
import com.facebook.drawee.view.SimpleDraweeView;
import java.util.List;

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;
    private List<MyListBean.NewslistBean> list;
    private LayoutInflater inflater;

    public MyAdapter(Context context, List<MyListBean.NewslistBean> list) {
        this.context = context;
        this.list = list;
        inflater=LayoutInflater.from(context);
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = inflater.inflate( R.layout.item_mylist, parent, false);
        MobileViewHolder mobileViewHolder = new MobileViewHolder(view);
        return mobileViewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
        MobileViewHolder mobileViewHolder= (MobileViewHolder) holder;
        MyListBean.NewslistBean newslistBean = list.get(position);
        mobileViewHolder.img.setImageURI(newslistBean.getPicUrl());
        mobileViewHolder.tv1.setText(newslistBean.getTitle());
        mobileViewHolder.tv2.setText(newslistBean.getCtime());
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    private class MobileViewHolder extends RecyclerView.ViewHolder {
        private final SimpleDraweeView img;
        private final TextView tv1;
        private final TextView tv2;

        public MobileViewHolder(View view) {
            super(view);
            img = view.findViewById(R.id.img);
            tv1 = view.findViewById(R.id.tv1);
            tv2 = view.findViewById(R.id.tv2);
        }
    }

    //刷新
    public void refresh(List<MyListBean.NewslistBean> tlist){
        this.list.clear();
        this.list.addAll(tlist);
        notifyDataSetChanged();
    }

    //加载更多
    public void loadMore(List<MyListBean.NewslistBean> list){
        this.list.addAll(list);
        notifyDataSetChanged();
    }
}

inter文件夹下IBase

import android.view.View;

public interface IBase {
    int getContentLayout();
    void inject();
    void initView(View view);
}

component文件夹下HttpComponent

import com.bwie.test.module.HttpModule;
import com.bwie.test.mylistpicture.MyListFragment;
import dagger.Component;

@Component(modules = HttpModule.class)
public interface HttpComponent {
    void inject(MyListFragment myListFragment);
}

module文件夹下HttpModule

import com.bwie.test.net.Api;
import com.bwie.test.net.MobileAPi;
import com.bwie.test.net.MobileAPiService;
import java.util.concurrent.TimeUnit;

import dagger.Module;
import dagger.Provides;
import okhttp3.OkHttpClient;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;

@Module
public class HttpModule {
    @Provides
    OkHttpClient.Builder providesOkHttpClientBuilder(){
        return new OkHttpClient.Builder()
                .readTimeout(20, TimeUnit.MINUTES)
                .writeTimeout(20,TimeUnit.MINUTES)
                .connectTimeout(10,TimeUnit.MINUTES);
    }

    @Provides
    MobileAPi provideMobileAPi(OkHttpClient.Builder builder){
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(Api.BASEURL)
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .client(builder.build())
                .build();
        MobileAPiService mobileAPiService = retrofit.create(MobileAPiService.class);
        return MobileAPi.getMobileAPi(mobileAPiService);
    }
}

net文件夹下Api

public interface Api {
    String BASEURL = "http://api.tianapi.com/";
}

MobileAPi

import com.bwie.test.bean.MyListBean;
import io.reactivex.Observable;

public class MobileAPi {
    private static MobileAPi mobileAPi;
    private MobileAPiService mobileAPiService;

    public MobileAPi(MobileAPiService mobileAPiService) {
        this.mobileAPiService = mobileAPiService;
    }

    public static MobileAPi getMobileAPi(MobileAPiService mobileAPiService){
        if (mobileAPi==null){
            mobileAPi=new MobileAPi(mobileAPiService);
        }
        return mobileAPi;
    }

    public Observable<MyListBean> getMobile(){
        return mobileAPiService.getMobile();
    }
}

MobileAPiService

import com.bwie.test.bean.MyListBean;
import io.reactivex.Observable;
import retrofit2.http.GET;

public interface MobileAPiService {
    @GET("mobile/?key=71e58b5b2f930eaf1f937407acde08fe&num=10")
    Observable<MyListBean> getMobile();
}

utils文件夹下ExternalStorageUtils

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class ExternalStorageUtils {
    /**
     * 将传递过来的图片byte数组存储到sd卡中
     */
    public static boolean storeToSDRoot(String imgName, byte buff[]) {
        boolean b = false;
        String basePath = Environment.getExternalStorageDirectory().getAbsolutePath();
        File file = new File(basePath, imgName);
        try {
            FileOutputStream fos = new FileOutputStream(file);
            fos.write(buff);
            fos.close();
            b = true;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return b;
    }

    /**
     * 从本地内存中根据图片名字获取图片
     */
    public static Bitmap getImgFromSDRoot(String imgName) {
        Bitmap bitmap = null;
        String basePath = Environment.getExternalStorageDirectory().getAbsolutePath();
        File file = new File(basePath, imgName);
        try {
            FileInputStream fis = new FileInputStream(file);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            byte b[] = new byte[1024];
            int len;
            while ((len = fis.read(b)) != -1) {
                baos.write(b, 0, len);
            }
            byte buff[] = baos.toByteArray();
            if (buff != null && buff.length != 0) {
                bitmap = BitmapFactory.decodeByteArray(buff, 0, buff.length);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bitmap;
    }
}

HttpUtils

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpUtils {
    /**
     * 判断网络连接是否通畅
     */
    public static boolean isNetConn(Context mContext) {
        ConnectivityManager manager = (ConnectivityManager) mContext.getSystemService(
                                     Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = manager.getActiveNetworkInfo();
        if (info != null) {
            return info.isConnected();
        } else {
            return false;
        }
    }

    /**
     * 根据path下载网络上的数据
     */
    public static byte[] getDateFromNet(String path) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        try {
            URL url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5000);
            conn.setDoInput(true);
            conn.connect();
            if (conn.getResponseCode()==200) {
                InputStream is = conn.getInputStream();
                byte b[] = new byte[1024];
                int len;
                while ((len=is.read(b))!=-1) {
                    baos.write(b, 0, len);
                }
                return baos.toByteArray();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return baos.toByteArray();
    }
}

bean文件夹下MyListBean

import java.util.List;

public class MyListBean {

    private int code;
    private String msg;
    private List<NewslistBean> newslist;

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public List<NewslistBean> getNewslist() {
        return newslist;
    }

    public void setNewslist(List<NewslistBean> newslist) {
        this.newslist = newslist;
    }

    public static class NewslistBean {

        private String ctime;
        private String title;
        private String description;
        private String picUrl;
        private String url;

        public String getCtime() {
            return ctime;
        }

        public void setCtime(String ctime) {
            this.ctime = ctime;
        }

        public String getTitle() {
            return title;
        }

        public void setTitle(String title) {
            this.title = title;
        }

        public String getDescription() {
            return description;
        }

        public void setDescription(String description) {
            this.description = description;
        }

        public String getPicUrl() {
            return picUrl;
        }

        public void setPicUrl(String picUrl) {
            this.picUrl = picUrl;
        }

        public String getUrl() {
            return url;
        }

        public void setUrl(String url) {
            this.url = url;
        }
    }
}

相关推荐