Github地址

效果图如下；

MVP

Retrofit
Retrofit是Square开发的一个Android和java的REST客户端库。

这两天工作不是很忙，写了一个当前流行的Android MVP+Retrofit(封装)+RxJava实例，mvp和retrofit我就不详细讲的，以后会详细写，下面直接上demo！

1.分类
首先我们要规划好包名和类的分类，不要把类随随便便放，如下图：

除了上图的模式，我们还可以把所有mvp类放在mvp包下，然后再按照上图写。

2.添加依赖和权限

    compile 'com.squareup.retrofit2:retrofit:2.1.0'compile 'io.reactivex:rxandroid:1.2.1'compile 'io.reactivex:rxjava:1.1.6'compile 'com.google.code.gson:gson:2.8.0'compile 'com.squareup.retrofit2:converter-gson:2.1.0'compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'

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

3.定义Model--实体类 与URL接口
Model其实就是我们常常写的实体类，一般直接可在AS的GsonFormat插件上生成就可以了.这里我就不贴出来了

URL接口如下：

public interface ApiService {//baseUrlString API_SERVER_URL = "http://apistore.baidu.com/microservice/";//加载天气@GET("weather")Observable<WeatherModel> loadDataByRetrofitRxjava(@Query("citypinyin") String cityId);//    @FormUrlEncoded
//    @POST("user/login")
//    Observable<WeatherModel> getlogin(@Field("oper_name") String page, @Field("oper_pwds") String rows);
}

这就需要我们对Retrofit的注解好好去看一看.

5.连接通信(已封装)
其实就是下面的代码，这些我已经封装了，请下载查看。

     public static Retrofit retrofit() {if (mRetrofit == null) {OkHttpClient.Builder builder = new OkHttpClient.Builder();OkHttpClient okHttpClient = builder.build();mRetrofit = new Retrofit.Builder().baseUrl(ApiService.API_SERVER_URL).addConverterFactory(GsonConverterFactory.create()).addCallAdapterFactory(RxJavaCallAdapterFactory.create()).client(okHttpClient).build();}return mRetrofit;}

6.View类

public interface WeatherView {void getWeatherSuccess(WeatherModel weatherModel);
}

下面是activity:

public class MainActivity extends AppCompatActivity  implements WeatherView,View.OnClickListener {private Button btn;private TextView tv_show;private EditText edt;private WeatherPresenter weatherpresenter=new WeatherPresenter(this);@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {tv_show= (TextView) findViewById(R.id.tv_show);btn= (Button) findViewById(R.id.btn);edt= (EditText) findViewById(R.id.edt);btn.setOnClickListener(this);}@Overridepublic void getWeatherSuccess(WeatherModel weatherModel) {tv_show.setText("  "+weatherModel.getRetData().getWeather()+"  "+weatherModel.getRetData().getWD());}@Overridepublic void onClick(View v) {switch (v.getId()){case R.id.btn:weatherpresenter.loadDataByRetrofitRxjava11111(edt.getText().toString());break;}}@Overrideprotected void onDestroy() {super.onDestroy();if (weatherpresenter!=null){weatherpresenter.detachView();Log.e("RXJAVA","毁灭");}}
}

7.Presenter类

首先写一个BasePresenter:

public class BasePresenter<V> {public V mvpView;protected ApiService apiStores;private CompositeSubscription mCompositeSubscription;public void attachView(V mvpView) {this.mvpView = mvpView;apiStores = ApiClient.retrofit().create(ApiService.class);}public void detachView() {this.mvpView = null;onUnsubscribe();}//RXjava取消注册，以避免内存泄露public void onUnsubscribe() {if (mCompositeSubscription != null && mCompositeSubscription.hasSubscriptions()) {mCompositeSubscription.unsubscribe();}}public <T> void addSubscription(Observable<T> observable, Subscriber<T> subscriber) {if (mCompositeSubscription == null) {mCompositeSubscription = new CompositeSubscription();}mCompositeSubscription.add(observable.subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).subscribe(subscriber));}
}

下面是WeatherPresenter：

public class WeatherPresenter extends BasePresenter<WeatherView>{public WeatherPresenter(WeatherView view) {attachView(view);}public void loadDataByRetrofitRxjava11111(String cityId) {addSubscription(apiStores.loadDataByRetrofitRxjava(cityId), new Subscriber<WeatherModel>() {@Overridepublic void onCompleted() {}@Overridepublic void onError(Throwable e) {}@Overridepublic void onNext(WeatherModel weatherModel) {//  Log.e("请求成功","111");mvpView.getWeatherSuccess(weatherModel);}});
}
}
}

我的公众号如下: