Integration of RxJava+Retrofit 2.0+MVP Patterns in Android

Keywords: Retrofit Android ButterKnife network

Working Principle of MVP

The above is the working principle of MVP. The Presenter Operations View and Mode s, which everyone notices, are directly invoked through interfaces.

MVP workflow

Presenter is responsible for logical processing.
Model provides data.
View is responsible for display.
As a new mode, View does not use Model directly in MVC. The communication between them is through Presenter. All interactions take place inside Presenter. In MVC, View reads data from direct model instead of through Controller.

RxJava and Retrofit 2.0

I won't go too far in using both of them. There are many demo s in github. Let's see for ourselves.

The integration of MVP, RxJava and Reterofit 2.0 will now begin

Let me start with the structure of this project.

api packages mainly store network request interfaces
Store entity classes in bean packages
Store processing data in model package
Store the master in the pesenter package
Storage Interface Processing in view Package

view code:

/**
*WeatherView Used for processing interface display
*/
public interface WeatherView {

    void showProgress();
    void hideProgress();
    void loadWeather(WeatherData weatherData);
}

package com.lidong.demo.android_rapid_development_of_library.mvp;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import com.lidong.android_ibrary.LoadingUIHelper;
import com.lidong.demo.android_rapid_development_of_library.R;
import com.lidong.demo.android_rapid_development_of_library.mvp.bean.WeatherData;
import com.lidong.demo.android_rapid_development_of_library.mvp.presenter.WeatherPresenter;
import com.lidong.demo.android_rapid_development_of_library.mvp.presenter.WeatherPresenterImp;
import com.lidong.demo.android_rapid_development_of_library.mvp.view.WeatherView;

import butterknife.Bind;
import butterknife.ButterKnife;
/**
*Show weather details
*/
public class WeatherActivity extends AppCompatActivity implements WeatherView {

    @Bind(R.id.toolbar)
    Toolbar toolbar;
    @Bind(R.id.textView1)
    TextView textView1;
    @Bind(R.id.textView2)
    TextView textView2;
    @Bind(R.id.textView3)
    TextView textView3;
    @Bind(R.id.textView4)
    TextView textView4;
    @Bind(R.id.textView5)
    TextView textView5;
    @Bind(R.id.textView6)
    TextView textView6;
    @Bind(R.id.textView7)
    TextView textView7;
    @Bind(R.id.textView8)
    TextView textView8;
    @Bind(R.id.textView9)
    TextView textView9;
    private WeatherPresenter mWeatherPresenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_weather);
        ButterKnife.bind(this);
        setSupportActionBar(toolbar);
        mWeatherPresenter = new WeatherPresenterImp(this);
        mWeatherPresenter.getWeatherData("2", "Suzhou");
    }

    @Override
    public void showProgress() {
        LoadingUIHelper.showDialogForLoading(this,"get data",false);
    }

    @Override
    public void hideProgress() {
        LoadingUIHelper.hideDialogForLoading();
        Toast.makeText(this,"Server exception",Toast.LENGTH_SHORT).show();
         mWeatherPresenter.onUnsubscribe();
    }

    @Override
    public void loadWeather(WeatherData weatherData) {
        Log.d("weatherData", "weatherData==" + weatherData.toString());
        textView1.setText("City:"+weatherData.getResult().getToday().getCity());
        textView2.setText("Date:"+weatherData.getResult().getToday().getWeek());
        textView3.setText("Today's temperature:"+weatherData.getResult().getToday().getTemperature());
        textView4.setText("Weather Signs:" +WeatherIDUtils.transfer(weatherData.getResult().getToday().getWeather_id().getFa()));
        textView5.setText("Clothing index:" + weatherData.getResult().getToday().getDressing_advice());
        textView6.setText("Drying index:"+weatherData.getResult().getToday().getDressing_index());
        textView7.setText("Ultraviolet intensity:"+weatherData.getResult().getToday().getUv_index());
        textView8.setText("Suggestions on dressing:"+weatherData.getResult().getToday().getDressing_advice());
        textView9.setText("Tourism index:"+weatherData.getResult().getToday().getTravel_index());
    }
}

 @Override
 protected void onDestroy() {
     super.onDestroy();
     //Cancellation of registration
     mWeatherPresenter.onUnsubscribe();
 }

Code in model Layer

/**
 *
 * Created by lidong on 2016/3/2.
 */
public interface WeatherModel {
    /**
     * Access to weather information
     * @param format
     * @param city
     */
    Subscription getWeatherData(String format, String city);


}

/**
 * Created by lidong on 2016/3/2.
 */
public class WeatherModelImp  implements WeatherModel {

    private WeatherOnListener mWeatherOnListener;


    public WeatherModelImp(WeatherOnListener mWeatherOnListener) {
        this.mWeatherOnListener = mWeatherOnListener;
    }

    @Override
    public void getWeatherData(String format,String city) {
@Override
    public Subscription getWeatherData(String format,String city) {

        Observable<WeatherData> request = com.lidong.demo.mvp_dagger2.api.ApiManager.getWeatherData(format, city).cache();

        Subscription sub = request.subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Action1<WeatherData>() {
                    @Override
                    public void call(WeatherData weatherData) {
                        mWeatherOnListener.onSuccess(weatherData);
                    }
                }, new Action1<Throwable>() {
                    @Override
                    public void call(Throwable throwable) {
                        mWeatherOnListener.onFailure(throwable);
                    }
                });
        return  sub;
    }
    /**
    *Callback interface
    */
    public interface WeatherOnListener{
        void onSuccess(WeatherData s);
        void onFailure(Throwable e);
    }
}

The code in the presenter layer:

/**
 * Created by lidong on 16/9/10.
 */
public class BasePresenter {


    protected CompositeSubscription mCompositeSubscription;

    //RXjava cancels registration to avoid memory leaks
    public void onUnsubscribe() {
        if (mCompositeSubscription != null && mCompositeSubscription.hasSubscriptions()) {
            mCompositeSubscription.unsubscribe();
        }
    }

    //RXjava registration
    public void addSubscription(Subscription subscriber) {
        if (mCompositeSubscription == null) {
            mCompositeSubscription = new CompositeSubscription();
        }
        mCompositeSubscription.add(subscriber);
    }
}




/**
 * Created by lidong on 2016/3/2.
 */
public abstract class WeatherPresenter extends BasePresenter{
  /**
     * Access to weather information
     * @param format
     * @param city
     */
  public abstract void getWeatherData(String format, String city);
}

package com.lidong.demo.mvp.presenter;

import android.util.Log;

import com.lidong.demo.mvp.bean.WeatherData;
import com.lidong.demo.mvp.model.WeatherModel;
import com.lidong.demo.mvp.model.WeatherModelImp;
import com.lidong.demo.mvp.view.WeatherView;

/**
 * Created by lidong on 2016/3/2.
 */
public class WeatherPresenterImp  extends WeatherPresenter  implements WeatherModelImp.WeatherOnListener{

    /**
     * WeatherModel Both WeatherView and WeatherView are implemented through interfaces, which means that the inversion principle is used in Java design principles.
     */
   private WeatherModel mWeatherModel;
   private WeatherView mWeatherView;

    public WeatherPresenterImp( WeatherView mWeatherView) {
        this.mWeatherModel = new WeatherModelImp(this);
        this.mWeatherView = mWeatherView;
    }

    @Override
    public void getWeatherData(String format, String city) {
        mWeatherView.showProgress();
        addSubscription(mWeatherModel.getWeatherData(format,city));
    }

    @Override
    public void onSuccess(WeatherData s) {
        mWeatherView.loadWeather(s);
        mWeatherView.hideProgress();
        Log.d("-------", "onSuccess() called with: " + "s = [" + s.toString() + "]");
    }

    @Override
    public void onFailure(Throwable e) {
        mWeatherView.hideProgress();
        Log.d("-------", "onFailure" + e.getMessage());
    }
}

api layer code

package com.lidong.demo.android_rapid_development_of_library.mvp.api;

import com.lidong.demo.android_rapid_development_of_library.mvp.bean.WeatherData;

import retrofit.GsonConverterFactory;
import retrofit.Retrofit;
import retrofit.RxJavaCallAdapterFactory;
import rx.Observable;

/**
 * Created by lidong on 2016/3/2.
 */
public class ApiManager {

    private static final String ENDPOINT = "http://v.juhe.cn";

    private static final Retrofit sRetrofit = new Retrofit .Builder()
            .baseUrl(ENDPOINT)
            .addConverterFactory(GsonConverterFactory.create())
            .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) // Use RxJava as callback adapter
            .build();

    private static final ApiManagerService apiManager = sRetrofit.create(ApiManagerService.class);

    /**
     * Obtaining weather data
     * @param city
     * @return
     */
    public static Observable<WeatherData> getWeatherData(String format, String city) {
        return apiManager.getWeatherData(format,city,"ad1d20bebafe0668502c8eea5ddd0333");
    }


}

package com.lidong.demo.android_rapid_development_of_library.mvp.api;

import com.lidong.demo.android_rapid_development_of_library.mvp.bean.WeatherData;

import retrofit.http.GET;
import retrofit.http.Query;
import rx.Observable;

/**
 * @className: ApiManagerService
 * Created by lidong on 2016/3/2.
 */
public interface ApiManagerService {
//http://v.juhe.cn/weather/index?format=2&cityname=%E8%8B%8F%E5%B7%9E&key=ad1d20bebafe0668502c8eea5ddd0333
    /**
     * get data
     * @param cityname
     * @param key
     * @return
     */
    @GET("/weather/index")
    Observable<WeatherData> getWeatherData(@Query("format") String format,@Query("cityname") String cityname,@Query("key") String key);

}

bean Layer Code

package com.lidong.demo.android_rapid_development_of_library.mvp.bean;

import java.util.List;

/**
 * Created by Administrator on 2015/12/21.
 */
public class WeatherData {

    /**
     * resultcode : 200
     * reason : successed!
     * result : {"sk":{"temp":"18","wind_direction":"Southeasterly wind, "wind_strength":"wind_strength":"2 level"","humidity":"""""""""humidity":""""""""""""""":"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""Clothing and other clothing. Old and infirm people should wear overcoats, woolen jackets and sweaters. "{uv_index": "weak"","comfort_index""""""""""","wash_index"""""""""", "wash_index"""""""""","travel_index"""""""""""""""""travel_index""""""""""""""""""""drying_index"""""""""""}"""""future"[{{temperature""""""""""""""""""8 ~17 Temp 8 Temp 8 ~17 (((Temperaterature"""",,,,8 ~17 Temperature"""""""""""""""11 ~21 Celsius", "weather", "cloudy", "weathe" R_id: {"fa"::{"01"""""{"fa""""""""{"fa"::""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""Cloudy", "weather_id", "fa", "01", "fb", "01", "wind", "Northeast Wind 3-4" Weekweek: "Saturday", "date", "date", "date": "20160305"",{temperature""", "11 ~20 Temperaterature", "weather"::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::Northeast Wind Level 3-4, Week, Monday, date, 20160307, Tempur E ":" 12 ~19 C","weather":" cloudy turning cloudy","weather_id":{fa":"01", "fb":"02", "wind":"southeast wind 3-4", "week", "date":"20160308"}}
     * error_code : 0
     */

    private String resultcode;
    private String reason;
    /**
     * sk : {"temp":"18","wind_direction":"Southeast Wind, Win_strength, Level 2, Humidity, 41%, Time, 14:32}
     * today : {"temperature":"8℃~17℃","weather":"Cloudy, weather_id, {fa,{01,} fb,{01,} wind, `Southeast Wind Level 3-4,''Wednesday,''city,''Suzhou,''date_y,''03/02, 2016,''dressing_index,''colder,''dressing_advice,''thick coat and sweater are recommended. Old and infirm people should wear overcoats, woolen jackets and sweaters. ","uv_index","weak","comfort_index","wash_index","more appropriate","travel_index","more appropriate","exercise_index":"more appropriate","drying_index":"}
     * future : [{"temperature":"8℃~17℃","weather":"Cloudy weather ("weather_id":{"weather_id"":{"fa""""""""{"01""""", "fb""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""":"cloudy to cloudy", "weather_id": {fa":" 01","fb":" 02"},"wind"“ "Southeasterly wind level 3-4"","week"": "Friday""", "date": "20160304"},{"temperature""": "10 ~19 C""""weather": "cloudy""""weather_id":{"fa"":"01""""""""""weather_id"""""{"fa""""""":"01"""""""""""""""""""""""""""""""""""""""""fafa"""""""""""""""""""""""""""""""""""""""""""""""""""""""week","Sunday","date","20160306" "}, {temperature""{"temperature""::"10 ~19 Temperature"""""weather"::{weather_id"":{fa""::"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""20160308"}]
     */

    private ResultEntity result;
    private int error_code;

    public void setResultcode(String resultcode) {
        this.resultcode = resultcode;
    }

    public void setReason(String reason) {
        this.reason = reason;
    }

    public void setResult(ResultEntity result) {
        this.result = result;
    }

    public void setError_code(int error_code) {
        this.error_code = error_code;
    }

    public String getResultcode() {
        return resultcode;
    }

    public String getReason() {
        return reason;
    }

    public ResultEntity getResult() {
        return result;
    }

    public int getError_code() {
        return error_code;
    }

    public static class ResultEntity {
        /**
         * temp : 18
         * wind_direction : Southeast wind
         * wind_strength : 2 level
         * humidity : 41%
         * time : 14:32
         */

        private SkEntity sk;
        /**
         * temperature : 8℃~17℃
         * weather : Cloudy
         * weather_id : {"fa":"01","fb":"01"}
         * wind : Southeast Wind Level 3-4
         * week : Wednesday
         * city : Suzhou
         * date_y : 2016 02 March 2003
         * dressing_index : Colder
         * dressing_advice : Thick coats and sweaters are recommended. Old and infirm people should wear overcoats, woolen jackets and sweaters.
         * uv_index : weak
         * comfort_index :
         * wash_index : More appropriate
         * travel_index : More appropriate
         * exercise_index : More appropriate
         * drying_index :
         */

        private TodayEntity today;
        /**
         * temperature : 8℃~17℃
         * weather : Cloudy
         * weather_id : {"fa":"01","fb":"01"}
         * wind : Southeast Wind Level 3-4
         * week : Wednesday
         * date : 20160302
         */

        private List<FutureEntity> future;

        public void setSk(SkEntity sk) {
            this.sk = sk;
        }

        public void setToday(TodayEntity today) {
            this.today = today;
        }

        public void setFuture(List<FutureEntity> future) {
            this.future = future;
        }

        public SkEntity getSk() {
            return sk;
        }

        public TodayEntity getToday() {
            return today;
        }

        public List<FutureEntity> getFuture() {
            return future;
        }

        public static class SkEntity {
            private String temp;
            private String wind_direction;
            private String wind_strength;
            private String humidity;
            private String time;

            public void setTemp(String temp) {
                this.temp = temp;
            }

            public void setWind_direction(String wind_direction) {
                this.wind_direction = wind_direction;
            }

            public void setWind_strength(String wind_strength) {
                this.wind_strength = wind_strength;
            }

            public void setHumidity(String humidity) {
                this.humidity = humidity;
            }

            public void setTime(String time) {
                this.time = time;
            }

            public String getTemp() {
                return temp;
            }

            public String getWind_direction() {
                return wind_direction;
            }

            public String getWind_strength() {
                return wind_strength;
            }

            public String getHumidity() {
                return humidity;
            }

            public String getTime() {
                return time;
            }

            @Override
            public String toString() {
                return "SkEntity{" +
                        "temp='" + temp + '\'' +
                        ", wind_direction='" + wind_direction + '\'' +
                        ", wind_strength='" + wind_strength + '\'' +
                        ", humidity='" + humidity + '\'' +
                        ", time='" + time + '\'' +
                        '}';
            }
        }

        public static class TodayEntity {

            @Override
            public String toString() {
                return "TodayEntity{" +
                        "temperature='" + temperature + '\'' +
                        ", weather='" + weather + '\'' +
                        ", weather_id=" + weather_id +
                        ", wind='" + wind + '\'' +
                        ", week='" + week + '\'' +
                        ", city='" + city + '\'' +
                        ", date_y='" + date_y + '\'' +
                        ", dressing_index='" + dressing_index + '\'' +
                        ", dressing_advice='" + dressing_advice + '\'' +
                        ", uv_index='" + uv_index + '\'' +
                        ", comfort_index='" + comfort_index + '\'' +
                        ", wash_index='" + wash_index + '\'' +
                        ", travel_index='" + travel_index + '\'' +
                        ", exercise_index='" + exercise_index + '\'' +
                        ", drying_index='" + drying_index + '\'' +
                        '}';
            }

            private String temperature;
            private String weather;
            /**
             * fa : 01
             * fb : 01
             */

            private WeatherIdEntity weather_id;
            private String wind;
            private String week;
            private String city;
            private String date_y;
            private String dressing_index;
            private String dressing_advice;
            private String uv_index;
            private String comfort_index;
            private String wash_index;
            private String travel_index;
            private String exercise_index;
            private String drying_index;

            public void setTemperature(String temperature) {
                this.temperature = temperature;
            }

            public void setWeather(String weather) {
                this.weather = weather;
            }

            public void setWeather_id(WeatherIdEntity weather_id) {
                this.weather_id = weather_id;
            }

            public void setWind(String wind) {
                this.wind = wind;
            }

            public void setWeek(String week) {
                this.week = week;
            }

            public void setCity(String city) {
                this.city = city;
            }

            public void setDate_y(String date_y) {
                this.date_y = date_y;
            }

            public void setDressing_index(String dressing_index) {
                this.dressing_index = dressing_index;
            }

            public void setDressing_advice(String dressing_advice) {
                this.dressing_advice = dressing_advice;
            }

            public void setUv_index(String uv_index) {
                this.uv_index = uv_index;
            }

            public void setComfort_index(String comfort_index) {
                this.comfort_index = comfort_index;
            }

            public void setWash_index(String wash_index) {
                this.wash_index = wash_index;
            }

            public void setTravel_index(String travel_index) {
                this.travel_index = travel_index;
            }

            public void setExercise_index(String exercise_index) {
                this.exercise_index = exercise_index;
            }

            public void setDrying_index(String drying_index) {
                this.drying_index = drying_index;
            }

            public String getTemperature() {
                return temperature;
            }

            public String getWeather() {
                return weather;
            }

            public WeatherIdEntity getWeather_id() {
                return weather_id;
            }

            public String getWind() {
                return wind;
            }

            public String getWeek() {
                return week;
            }

            public String getCity() {
                return city;
            }

            public String getDate_y() {
                return date_y;
            }

            public String getDressing_index() {
                return dressing_index;
            }

            public String getDressing_advice() {
                return dressing_advice;
            }

            public String getUv_index() {
                return uv_index;
            }

            public String getComfort_index() {
                return comfort_index;
            }

            public String getWash_index() {
                return wash_index;
            }

            public String getTravel_index() {
                return travel_index;
            }

            public String getExercise_index() {
                return exercise_index;
            }

            public String getDrying_index() {
                return drying_index;
            }

            public static class WeatherIdEntity {
                private String fa;
                private String fb;

                public void setFa(String fa) {
                    this.fa = fa;
                }

                public void setFb(String fb) {
                    this.fb = fb;
                }

                public String getFa() {
                    return fa;
                }

                public String getFb() {
                    return fb;
                }
            }
        }

        public static class FutureEntity {
            private String temperature;
            private String weather;
            /**
             * fa : 01
             * fb : 01
             */

            private WeatherIdEntity weather_id;
            private String wind;
            private String week;
            private String date;

            public void setTemperature(String temperature) {
                this.temperature = temperature;
            }

            public void setWeather(String weather) {
                this.weather = weather;
            }

            public void setWeather_id(WeatherIdEntity weather_id) {
                this.weather_id = weather_id;
            }

            public void setWind(String wind) {
                this.wind = wind;
            }

            public void setWeek(String week) {
                this.week = week;
            }

            public void setDate(String date) {
                this.date = date;
            }

            public String getTemperature() {
                return temperature;
            }

            public String getWeather() {
                return weather;
            }

            public WeatherIdEntity getWeather_id() {
                return weather_id;
            }

            public String getWind() {
                return wind;
            }

            public String getWeek() {
                return week;
            }

            public String getDate() {
                return date;
            }


            public static class WeatherIdEntity {
                private String fa;
                private String fb;

                public void setFa(String fa) {
                    this.fa = fa;
                }

                public void setFb(String fb) {
                    this.fb = fb;
                }

                public String getFa() {
                    return fa;
                }

                public String getFb() {
                    return fb;
                }

                @Override
                public String toString() {
                    return "WeatherIdEntity{" +
                            "fa='" + fa + '\'' +
                            ", fb='" + fb + '\'' +
                            '}';
                }
            }

            @Override
            public String toString() {
                return "FutureEntity{" +
                        "temperature='" + temperature + '\'' +
                        ", weather='" + weather + '\'' +
                        ", weather_id=" + weather_id +
                        ", wind='" + wind + '\'' +
                        ", week='" + week + '\'' +
                        ", date='" + date + '\'' +
                        '}';
            }
        }

        @Override
        public String toString() {
            return "ResultEntity{" +
                    "sk=" + sk +
                    ", today=" + today +
                    ", future=" + future +
                    '}';
        }
    }

    @Override
    public String toString() {
        return "WeatherData{" +
                "resultcode='" + resultcode + '\'' +
                ", reason='" + reason + '\'' +
                ", result=" + result +
                ", error_code=" + error_code +
                '}';
    }
}

summary

Finally, after layering the code with mvp, the modularization becomes clearer. If we want to change the network framework, we need to modify the code of model layer and api layer, and the code of other layers need not be changed again, so that the single responsibility between layers can be maintained. The code becomes more readable.

Download address of code

Running effect of code:

Welcome to check. If you have any questions, answer them directly.

From: http://blog.csdn.net/u010046908/article/details/50781360 [Li Dong's blog]

Posted by han2754 on Sat, 22 Jun 2019 16:09:23 -0700

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