浅谈retrofit2.1+okhttp3 搭建MVP框架

这是第一篇博客,如有写的不对的地方请指出,本人会虚心学习,共同进步,谢谢!


正文:


整个框架如下图所示:



这是我自己理解的MVP架构,针对各个文件简单的解释一下。


一、各个文件解释

1、adapters:里面存放各个View的适配器;

2、base:里面存放一些基类;


3、controllers:里面存放各个业务网络请求控制类;

注:因为请求后台数据时,后台统一由Controller层来接受参数、然后进行业务逻辑的实现。所以本人就以此来存放各个业务网络请求类。


4、daos:里面存放操作数据库一下方法类和共用方法类;

5、db:里面放数据库初始化类;

6、entitys:里面存放一些bean类、消息通知类、网络请求类、数据回调类、retrofit异步回调接受类;


7、http:里面存放网络请求类;


8、interfaces:里面存放一些适配器回调接口类、view层回调接口类、presenters层回调接口类、retrofit统一api地址服务接口;


9、mineview:里面存放一些自定义view、布局等类;

10、presenterimpls:里面存放各个业务presenter具体实现类;


11、service:里面存放一些业务涉及到的服务类;


12、utils:里面存放一些公用的方法;


13、Constants:里面存放一些公共的参数;

 public final static String ImageUrlIp = "x'x'x'x'x";


14、MyAapplication:里面存放一些全局变量、Fresco初始化;

 @Override
    public void onCreate() {
        super.onCreate();
        Fresco.initialize(this);
    }

以上是我个人针对MVP里面,搭建出来的框架,如有不妥的地方,还请指出,谢谢!


二、简单加载图片的具体实现


1、MainAtivity

1)、 MainActivity继承基类和BannerViewInter接口,并实现具体方法;

2)、实例化BannerPresenterInterImpl实现类,传入相关参数,调用图片请求显示方法;

3)、通过BannerViewInter接口的showBannerImg方法,接受返回图片地址url,调用图片显示方法,显示图片。

public class MainActivity extends BaseActivity implements BannerViewInter{

    @InjectView(R.id.am_sdv) public SimpleDraweeView bannerImg;


    private BannerPresenterInterImpl bannerPresenterInterimpl;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.inject(this);
        super.init();
    }

    @Override
    public void initView() {
        bannerPresenterInterimpl = new BannerPresenterInterImpl(this,this);
        bannerPresenterInterimpl.getBannerImg();
    }

    @Override
    public void initEvent() {

    }

    @Override
    public void initData() {

    }

    @Override
    public void showBannerImg(String url) {
        bannerImg.setImageURI(CommonUtils.setImgUri(url));
    }

    @Override
    public void onResponseFail(String fail) {
        Toast.makeText(this,fail,Toast.LENGTH_LONG).show();
    }

    @Override
    public void onFailure(String failure) {
        Toast.makeText(this,failure,Toast.LENGTH_LONG).show();
    }

2、BannerViewInter

1)、继承基类接口,自定义具体业务方法;

public interface BannerViewInter extends BaseViewInter{

    void showBannerImg(String url);

}
2)、基类接口。

public interface BaseViewInter {

    void onResponseFail(String fail);

    void onFailure(String failure);

}
3、BannerPresenterInterImpl

1)、继承BannerPresenterInter接口,实现具体方法;

2)、实例化BannerController控制类;

3)、调用图片请求方法;

4)、通过onBannerResponse方法 接收网络返回的数据;

5)、并调用BannerViewInter接口显示图片方法,回调给主线程,显示图片。

注:这里就可以实现具体的业务逻辑,通过接口,回调给主线程。

public class BannerPresenterInterImpl implements BannerPresenterInter {

    private Context context;
    private BannerViewInter bannerViewInter;
    private BannerController bannerController;

    public BannerPresenterInterImpl(Context context,BannerViewInter bannerViewInter){
        this.context = context;
        this.bannerViewInter = bannerViewInter;
    }



    public void getBannerImg(){
        bannerController = new BannerController(context,this);
        bannerController.getBanner();
    }


    @Override
    public void onBannerResponse(List<BannerResponse> responseList) {
        bannerViewInter.showBannerImg(responseList.get(0).getBannerUrl());
    }

    @Override
    public void onResponseFail(String fail) {
        bannerViewInter.onResponseFail(fail);
    }

    @Override
    public void onFailure(String failure) {
        bannerViewInter.onFailure(failure);
    }


}

4、BannerController

1)、初始化api服务接口、BannerPresenterInter接口等;

2)、调用服务接口显示图片的api,然后异步方法获取图片资源。

public class BannerController {

    private Context context;
    private BannerPresenterInter bannerPresenterInter;
    private ApiServiceInterface apiServiceInterface;

    public BannerController(Context context,BannerPresenterInter bannerPresenterInter){
        this.context = context;
        this.bannerPresenterInter = bannerPresenterInter;
        apiServiceInterface = RetrofitHttp.getApi();
    }

    public void getBanner(){
        Call<BannerObject> call = apiServiceInterface.homeBannerApi();

        call.enqueue(new Callback<BannerObject>() {
            @Override
            public void onResponse(Call<BannerObject> call, Response<BannerObject> response) {
                BannerObject object = response.body();
                if(object.getCode() == BaseController.CODE){
                    bannerPresenterInter.onBannerResponse(object.getResult());
                }else{
                    bannerPresenterInter.onResponseFail(object.getMessage());
                }
            }

            @Override
            public void onFailure(Call<BannerObject> call, Throwable t) {
                bannerPresenterInter.onFailure(t.toString());
            }
        });
    }



}
5、Okhttp

对Okhttp进行封装,添加打印日志等方法,方便查看返回结果及后台报错原因。

public class OkhttpHttp {


    public static OkHttpClient getOkHttpClient(){

        HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {
            @Override
            public void log(String message) {
                Log.i("message",message);
            }
        });
        httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

        OkHttpClient client = new OkHttpClient.Builder()
                .addInterceptor(new Interceptor() {
                    @Override
                    public Response intercept(Chain chain) throws IOException {
                        Request request = chain.request();
                        Log.i("request",request.toString());
                        Response proceed = chain.proceed(request);
                        Log.i("procceed",proceed.toString());
                        return proceed;
                    }
                })
                .addInterceptor(httpLoggingInterceptor)
                .connectTimeout(5000, TimeUnit.SECONDS)
                .build();

        return client;

    }


}

6、RetrofitHttp

添加请求返回可以接受的参数及api服务接口。

public class RetrofitHttp {

    public final static String IP = "xxxx";
    public final static String Http = "http://"+IP+"/mobile-web/mobile/";
    public static ApiServiceInterface apiServiceInterface;
    public static Retrofit retrofit;


    private RetrofitHttp(){}

    public static ApiServiceInterface getApi(){
        if(retrofit == null){
            retrofit = new Retrofit.Builder()
                    .baseUrl(Http)
                    .addConverterFactory(GsonConverterFactory.create())
                    .addConverterFactory(ScalarsConverterFactory.create())
                    .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                    .client(OkhttpHttp.getOkHttpClient())
                    .build();
        }
        apiServiceInterface = retrofit.create(ApiServiceInterface.class);

        return apiServiceInterface;
    }

}
7、ApiServiceInterface

里面存放统一api请求地址。

public interface ApiServiceInterface {

    String HOME = "home/"; //主页

    @GET(HOME+"getTopBannerList")
    Call<BannerObject> homeBannerApi(); //banner


}
8、BannerObject

里面存放请求回来,接受参数。

public class BannerObject extends BaseResponseObject{

    private List<BannerResponse> result;


    public List<BannerResponse> getResult() {
        return result;
    }

    public void setResult(List<BannerResponse> result) {
        this.result = result;
    }

}





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转载自blog.csdn.net/qq_26570819/article/details/55519780