Android MVP 实例

简单的请求天气功能，演示Android MVP是如何使用的

效果预览

准备

gradle文件

1 

compile 'com.loopj.android:android-async-http:1.4.9' 

说明：请求网络使用async-http

MainActivity

public class MainActivity extends AppCompatActivity implements MainView {      ProgressBar mProgressBar;      TextView text;      MainPresenter mMainPresenter;        @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);          initView();        }        private void initView() {          text = (TextView) findViewById(R.id.text);          mProgressBar = (ProgressBar) findViewById(R.id.mProgressBar);          mMainPresenter = new MainPresenter();          mMainPresenter.attachView(this);          mMainPresenter.loadData();      }        @Override      protected void onDestroy() {          mMainPresenter.detachView();          super.onDestroy();      }        @Override      public void showData(MainModel mainModel) {          text.setText("城市：" + mainModel.getCity()                  + "\n风向：" + mainModel.getWd()                  + "\n风级：" + mainModel.getWs()                  + "\n发布时间：" + mainModel.getTime());      }          @Override      public void showProgress() {          mProgressBar.setVisibility(View.VISIBLE);      }        @Override      public void hideProgress() {          mProgressBar.setVisibility(View.GONE);      }    }

MVP之M

MainModel

public class MainModel {      String city;      String wd;      String ws;      String time;        public String getCity() {          return city;      }        public void setCity(String city) {          this.city = city;      }        public String getWd() {          return wd;      }        public void setWd(String wd) {          this.wd = wd;      }        public String getWs() {          return ws;      }        public void setWs(String ws) {          this.ws = ws;      }        public String getTime() {          return time;      }        public void setTime(String time) {          this.time = time;      }  }

//业务具体处理  public class MainPresenter implements Presenter<MainView> {      private MainView mMainView;        @Override      public void attachView(MainView view) {          this.mMainView = view;      }        public void loadData() {          mMainView.showProgress();          AsyncHttpClient asyncHttpClient = new AsyncHttpClient();          asyncHttpClient.get("http://www.weather.com.cn/adat/sk/101010100.html", new JsonHttpResponseHandler() {              @Override              public void onSuccess(int statusCode, Header[] headers, JSONObject response) {                  super.onSuccess(statusCode, headers, response);                  try {                      MainModel mainModel = new MainModel();                      JSONObject weatherinfo = response.getJSONObject("weatherinfo");                      mainModel.setCity(weatherinfo.getString("city"));                      mainModel.setWd(weatherinfo.getString("WD"));                      mainModel.setWs(weatherinfo.getString("WS"));                      mainModel.setTime(weatherinfo.getString("time"));                      mMainView.showData(mainModel);                      mMainView.hideProgress();                  } catch (JSONException e) {                      e.printStackTrace();                  }                }                @Override              public void onFailure(int statusCode, Header[] headers, Throwable throwable, JSONObject errorResponse) {                  super.onFailure(statusCode, headers, throwable, errorResponse);                  mMainView.hideProgress();              }          });      }        @Override      public void detachView() {          this.mMainView = null;      }  }

public interface Presenter<V> {        void attachView(V view);        void detachView();    }

//处理业务需要哪些方法  public interface MainView {      void showData(MainModel mainModel);        void showProgress();        void hideProgress();  }