Retrofit的簡單使用

寫代碼思路流程：

//1.權限和依賴
//2.佈局文件
//3.生成實體bean類
//4.封裝工具類 Retrofit + RxJava + OkHttp
//5.搭建MVP架構
//6.創建適配器
//7.在Activity或者Fragment中進行加載佈局管理器和綁定適配器

效果圖：

a.添加聯網權限：

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

b.依賴：（帶libs的依賴需要自己導入jar包，也可以自己在網上搜直接添加）

compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'io.reactivex:rxjava:1.0.14'
compile 'io.reactivex:rxandroid:1.0.1'

compile 'com.squareup.retrofit2:retrofit:2.0.2'                  //Retrofit2庫文件
compile 'com.squareup.retrofit2:converter-gson:2.0.2'           //支持Gson解析
compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'           //支持RxJava
compile 'com.jcodecraeer:xrecyclerview:1.3.2'
compile 'com.github.bumptech.glide:glide:3.7.0'

佈局文件：

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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="com.ccm.mvpretrofitrxjava.activity.MainActivity">

    <com.jcodecraeer.xrecyclerview.XRecyclerView
        android:id="@+id/xrv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></com.jcodecraeer.xrecyclerview.XRecyclerView>

</android.support.constraint.ConstraintLayout>

recy_item

<?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="50dp"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/iv_item"
        android:layout_width="50dp"
        android:layout_height="match_parent" />

    <TextView
        android:id="@+id/tv_item"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="我是文本"
        android:textSize="20sp"/>
</LinearLayout>

生成實體bean類：

public class Bean {

    private String msg;
    private RetEntity ret;
    private String code;

    public String getMsg() {
        return msg;
    }

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

    public RetEntity getRet() {
        return ret;
    }

    public void setRet(RetEntity ret) {
        this.ret = ret;
    }

    public String getCode() {
        return code;
    }

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

    public static class RetEntity {

        private AdvEntity adv;
        private int pnum;
        private int totalRecords;
        private int records;
        private int totalPnum;
        private List<?> bannerList;
        private List<ListEntity> list;

        public AdvEntity getAdv() {
            return adv;
        }

        public void setAdv(AdvEntity adv) {
            this.adv = adv;
        }

        public int getPnum() {
            return pnum;
        }

        public void setPnum(int pnum) {
            this.pnum = pnum;
        }

        public int getTotalRecords() {
            return totalRecords;
        }

        public void setTotalRecords(int totalRecords) {
            this.totalRecords = totalRecords;
        }

        public int getRecords() {
            return records;
        }

        public void setRecords(int records) {
            this.records = records;
        }

        public int getTotalPnum() {
            return totalPnum;
        }

        public void setTotalPnum(int totalPnum) {
            this.totalPnum = totalPnum;
        }

        public List<?> getBannerList() {
            return bannerList;
        }

        public void setBannerList(List<?> bannerList) {
            this.bannerList = bannerList;
        }

        public List<ListEntity> getList() {
            return list;
        }

        public void setList(List<ListEntity> list) {
            this.list = list;
        }

        public static class AdvEntity {

            private String imgURL;
            private String dataId;
            private String htmlURL;
            private String shareURL;
            private String title;

            public String getImgURL() {
                return imgURL;
            }

            public void setImgURL(String imgURL) {
                this.imgURL = imgURL;
            }

            public String getDataId() {
                return dataId;
            }

            public void setDataId(String dataId) {
                this.dataId = dataId;
            }

            public String getHtmlURL() {
                return htmlURL;
            }

            public void setHtmlURL(String htmlURL) {
                this.htmlURL = htmlURL;
            }

            public String getShareURL() {
                return shareURL;
            }

            public void setShareURL(String shareURL) {
                this.shareURL = shareURL;
            }

            public String getTitle() {
                return title;
            }

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

        public static class ListEntity {


            private int airTime;
            private String duration;
            private String loadtype;
            private int score;
            private String angleIcon;
            private String dataId;
            private String description;
            private String loadURL;
            private String shareURL;
            private String pic;
            private String title;
            private String roomId;

            public int getAirTime() {
                return airTime;
            }

            public void setAirTime(int airTime) {
                this.airTime = airTime;
            }

            public String getDuration() {
                return duration;
            }

            public void setDuration(String duration) {
                this.duration = duration;
            }

            public String getLoadtype() {
                return loadtype;
            }

            public void setLoadtype(String loadtype) {
                this.loadtype = loadtype;
            }

            public int getScore() {
                return score;
            }

            public void setScore(int score) {
                this.score = score;
            }

            public String getAngleIcon() {
                return angleIcon;
            }

            public void setAngleIcon(String angleIcon) {
                this.angleIcon = angleIcon;
            }

            public String getDataId() {
                return dataId;
            }

            public void setDataId(String dataId) {
                this.dataId = dataId;
            }

            public String getDescription() {
                return description;
            }

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

            public String getLoadURL() {
                return loadURL;
            }

            public void setLoadURL(String loadURL) {
                this.loadURL = loadURL;
            }

            public String getShareURL() {
                return shareURL;
            }

            public void setShareURL(String shareURL) {
                this.shareURL = shareURL;
            }

            public String getPic() {
                return pic;
            }

            public void setPic(String pic) {
                this.pic = pic;
            }

            public String getTitle() {
                return title;
            }

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

            public String getRoomId() {
                return roomId;
            }

            public void setRoomId(String roomId) {
                this.roomId = roomId;
            }
        }
    }
}

封裝工具類：

RequestApi接口

public interface RequestApi {
    public static final String BASE_URL = "http://api.svipmovie.com/front/";

    //get和RxJava
    @GET("columns/getVideoList.do?catalogId=402834815584e463015584e539330016&pnum=2")
    Observable<Bean> getData();

    @Streaming
    @POST("{fileName}")
    Call<ResponseBody> downloadFile(@Path("fileName") String fileName, @Header("Range") String range);

    @Streaming
    @POST("{fileName}")
    Call<ResponseBody> getFileLenght(@Path("fileName") String fileName);
}

RetrofitUtils類：

public class RetrofitUtils {
    //支持RxJava
    public static RequestApi getNetDatas(){
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(5, TimeUnit.SECONDS)
                .readTimeout(5, TimeUnit.SECONDS)
//                .addNetworkInterceptor(new MyInterceptro())
                .build();

        Retrofit retrofit = new Retrofit.Builder()
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create())
                .client(client)
                .baseUrl(RequestApi.BASE_URL)
                .build();

        RequestApi api = retrofit.create(RequestApi.class);

        return api;
    }


    public static RequestApi download(){
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(5, TimeUnit.SECONDS)
                .readTimeout(5, TimeUnit.SECONDS)
                //.addNetworkInterceptor(new MyInterceptro())
                .build();

        Retrofit retrofit = new Retrofit.Builder()
                .client(client)
                .baseUrl("http://10.0.2.2:8080/aaa/")
                .build();

        RequestApi api = retrofit.create(RequestApi.class);

        return api;
    }
}

view層：

public interface IRecyView {
    void showRecy(Bean bean);
}

model層：

IRecyModel接口

public interface IRecyModel {
    void recy(Observer<Bean> observer);
}

RecyModel是IRecyView的實現類

public class RecyModel implements IRecyModel {
    @Override
    public void recy(Observer<Bean> observer) {
        //OkHttpUtils.getInstance().doGet("http://api.svipmovie.com/front/columns/getVideoList.do?catalogId=402834815584e463015584e539330016", callback);
        RetrofitUtils.getNetDatas().getData()
        .subscribeOn(Schedulers.io())   //定義被觀察者在子線程執行
        .observeOn(AndroidSchedulers.mainThread())  //定義觀察者在主線程執行
        .subscribe(observer);
    }
}

presenter層：

public class RecyPresenter {
    private IRecyView view;
    private IRecyModel model;


    public RecyPresenter(IRecyView view) {
        this.view = view;
        model = new RecyModel();
    }

    public void showRecy(){
        model.recy(new Observer<Bean>() {
            @Override
            public void onCompleted() {
                Log.i("我用retrofit+RxJava好使啦", "onCompleted: ");
            }

            @Override
            public void onError(Throwable e) {
                Log.i("我用retrofit+RxJava好使啦", "onError: ");
            }

            @Override
            public void onNext(Bean bean) {
                Log.i("我用retrofit+RxJava好使啦", "onNext: ");
                view.showRecy(bean);
            }
        });
    }

    //解綁
    public void onDestory(){
        view = null;
    }
}

適配器：

public class MyRecyAdapter extends RecyclerView.Adapter<MyRecyAdapter.MyViewHolder>{
    private Context context;
    private Bean bean;

    public MyRecyAdapter(Context context, Bean bean) {
        this.context = context;
        this.bean = bean;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.recy_item, parent, false);
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        Glide.with(context).load(bean.getRet().getList().get(position).getPic()).into(holder.iv_item);
        holder.tv_item.setText(bean.getRet().getList().get(position).getDescription());
    }

    @Override
    public int getItemCount() {
        return bean.getRet().getList().size();
    }

    static class MyViewHolder extends RecyclerView.ViewHolder{

        ImageView iv_item;
        TextView tv_item;

        public MyViewHolder(View itemView) {
            super(itemView);
            iv_item = itemView.findViewById(R.id.iv_item);
            tv_item = itemView.findViewById(R.id.tv_item);
        }
    }
}

MainActivity：

//1.權限和依賴
//2.佈局文件
//3.生成實體bean類
//4.封裝工具類 Retrofit + RxJava + OkHttp
//5.搭建MVP架構
//6.創建適配器
//7.在Activity或者Fragment中進行加載佈局管理器和綁定適配器
public class MainActivity extends AppCompatActivity implements IRecyView{

    private XRecyclerView xrv;
    private RecyPresenter presenter;

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

        initView();
        presenter = new RecyPresenter(this);
        presenter.showRecy();
    }


    private void initView() {
        xrv = (XRecyclerView) findViewById(R.id.xrv);
        LinearLayoutManager manager = new LinearLayoutManager(this);
        manager.setOrientation(LinearLayoutManager.VERTICAL);
        xrv.setLayoutManager(manager);
        //下面是加載更多的方法
    }
    @Override
    public void showRecy(Bean bean) {
        MyRecyAdapter myRecyAdapter = new MyRecyAdapter(this, bean);
        xrv.setAdapter(myRecyAdapter);
    }
}