版權聲明：本文為部落客原創文章，未經部落客允許不得轉載。 https://blog.csdn.net/u010046908/article/details/50781360
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http://blog.csdn.net/u010046908/article/details/50781360 本文出自:【李東的部落格】MVP的工作原理
以上是MVP的工作原理圖。其中大家注意的Presenter操作View和Mode都是通過接口來實作直接的調用。
MVP的工作流程
- Presenter負責邏輯的處理，
- Model提供資料，
-
View負責顯示。
作為一種新的模式，在MVP中View并不直接使用Model，它們之間的通信是通過Presenter來進行的，所有的互動都發生在Presenter内部，而在MVC中View會從直接Model中讀取資料而不是通過 Controller。
RxJava和Retrofit2.0使用
這二者的使用我就不羅嗦了，github中後好多demo，大家自己看。
MVP、RxJava和Reterofit2.0三者的整合現在開始講解
首先說一下本項目的結構
- api包主要存放網絡請求接口
- bean包中存放實體類
- model包中存放處理資料
- pesenter包中存放主導器
- view包中存放界面處理
view的代碼：
/**
*WeatherView 用于處理界面顯示
*/
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;
/**
*展示天氣詳情
*/
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", "蘇州");
}
@Override
public void showProgress() {
LoadingUIHelper.showDialogForLoading(this,"擷取資料",false);
}
@Override
public void hideProgress() {
LoadingUIHelper.hideDialogForLoading();
Toast.makeText(this,"伺服器異常",Toast.LENGTH_SHORT).show();
mWeatherPresenter.onUnsubscribe();
}
@Override
public void loadWeather(WeatherData weatherData) {
Log.d("weatherData", "weatherData==" + weatherData.toString());
textView1.setText("城市："+weatherData.getResult().getToday().getCity());
textView2.setText("日期："+weatherData.getResult().getToday().getWeek());
textView3.setText("今日溫度："+weatherData.getResult().getToday().getTemperature());
textView4.setText("天氣辨別：" +WeatherIDUtils.transfer(weatherData.getResult().getToday().getWeather_id().getFa()));
textView5.setText("穿衣指數：" + weatherData.getResult().getToday().getDressing_advice());
textView6.setText("幹燥指數："+weatherData.getResult().getToday().getDressing_index());
textView7.setText("紫外線強度："+weatherData.getResult().getToday().getUv_index());
textView8.setText("穿衣建議："+weatherData.getResult().getToday().getDressing_advice());
textView9.setText("旅遊指數："+weatherData.getResult().getToday().getTravel_index());
}
}
@Override
protected void onDestroy() {
super.onDestroy();
//取消注冊
mWeatherPresenter.onUnsubscribe();
}
model層中的代碼
/**
*
* Created by lidong on 2016/3/2.
*/
public interface WeatherModel {
/**
* 擷取天氣資訊
* @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;
}
/**
*回調接口
*/
public interface WeatherOnListener{
void onSuccess(WeatherData s);
void onFailure(Throwable e);
}
} presenter層中的代碼：
/**
* Created by lidong on 16/9/10.
*/
public class BasePresenter {
protected CompositeSubscription mCompositeSubscription;
//RXjava取消注冊，以避免記憶體洩露
public void onUnsubscribe() {
if (mCompositeSubscription != null && mCompositeSubscription.hasSubscriptions()) {
mCompositeSubscription.unsubscribe();
}
}
//RXjava注冊
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{
/**
* 擷取天氣資訊
* @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和WeatherView都是通過接口來實作，這就Java設計原則中依賴倒置原則使用
*/
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層的代碼
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()) // 使用RxJava作為回調擴充卡
.build();
private static final ApiManagerService apiManager = sRetrofit.create(ApiManagerService.class);
/**
* 擷取天氣資料
* @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
/**
* 擷取資料
* @param cityname
* @param key
* @return
*/
@GET("/weather/index")
Observable<WeatherData> getWeatherData(@Query("format") String format,@Query("cityname") String cityname,@Query("key") String key);
}
bean層的代碼
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":"東南風","wind_strength":"2級","humidity":"41%","time":"14:32"},"today":{"temperature":"8℃~17℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期三","city":"蘇州","date_y":"2016年03月02日","dressing_index":"較冷","dressing_advice":"建議着厚外套加毛衣等服裝。年老體弱者宜着大衣、呢外套加羊毛衫。","uv_index":"弱","comfort_index":"","wash_index":"較适宜","travel_index":"較适宜","exercise_index":"較适宜","drying_index":""},"future":[{"temperature":"8℃~17℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期三","date":"20160302"},{"temperature":"11℃~21℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期四","date":"20160303"},{"temperature":"12℃~19℃","weather":"多雲轉陰","weather_id":{"fa":"01","fb":"02"},"wind":"東南風3-4 級","week":"星期五","date":"20160304"},{"temperature":"10℃~19℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東北風3-4 級","week":"星期六","date":"20160305"},{"temperature":"11℃~20℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期日","date":"20160306"},{"temperature":"10℃~19℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東北風3-4 級","week":"星期一","date":"20160307"},{"temperature":"12℃~19℃","weather":"多雲轉陰","weather_id":{"fa":"01","fb":"02"},"wind":"東南風3-4 級","week":"星期二","date":"20160308"}]}
* error_code : 0
*/
private String resultcode;
private String reason;
/**
* sk : {"temp":"18","wind_direction":"東南風","wind_strength":"2級","humidity":"41%","time":"14:32"}
* today : {"temperature":"8℃~17℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期三","city":"蘇州","date_y":"2016年03月02日","dressing_index":"較冷","dressing_advice":"建議着厚外套加毛衣等服裝。年老體弱者宜着大衣、呢外套加羊毛衫。","uv_index":"弱","comfort_index":"","wash_index":"較适宜","travel_index":"較适宜","exercise_index":"較适宜","drying_index":""}
* future : [{"temperature":"8℃~17℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期三","date":"20160302"},{"temperature":"11℃~21℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期四","date":"20160303"},{"temperature":"12℃~19℃","weather":"多雲轉陰","weather_id":{"fa":"01","fb":"02"},"wind":"東南風3-4 級","week":"星期五","date":"20160304"},{"temperature":"10℃~19℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東北風3-4 級","week":"星期六","date":"20160305"},{"temperature":"11℃~20℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東南風3-4 級","week":"星期日","date":"20160306"},{"temperature":"10℃~19℃","weather":"多雲","weather_id":{"fa":"01","fb":"01"},"wind":"東北風3-4 級","week":"星期一","date":"20160307"},{"temperature":"12℃~19℃","weather":"多雲轉陰","weather_id":{"fa":"01","fb":"02"},"wind":"東南風3-4 級","week":"星期二","date":"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 : 東南風
* wind_strength : 2級
* humidity : 41%
* time : 14:32
*/
private SkEntity sk;
/**
* temperature : 8℃~17℃
* weather : 多雲
* weather_id : {"fa":"01","fb":"01"}
* wind : 東南風3-4 級
* week : 星期三
* city : 蘇州
* date_y : 2016年03月02日
* dressing_index : 較冷
* dressing_advice : 建議着厚外套加毛衣等服裝。年老體弱者宜着大衣、呢外套加羊毛衫。
* uv_index : 弱
* comfort_index :
* wash_index : 較适宜
* travel_index : 較适宜
* exercise_index : 較适宜
* drying_index :
*/
private TodayEntity today;
/**
* temperature : 8℃~17℃
* weather : 多雲
* weather_id : {"fa":"01","fb":"01"}
* wind : 東南風3-4 級
* week : 星期三
* 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 +
'}';
}
}
總結
最後總結一下，通過使用mvp對代碼進行分層之後，子產品化更加的清楚，假如要換網絡架構，需要修改model層和api層的代碼，其他的層的代碼都不需要再動，這樣各層之間保持單一職責。代碼的易讀性變得更強了。
代碼的下載下傳位址代碼的運作效果：
歡迎大家檢視。如果有問題直接回複。
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