Retrofit+RxJava+MVP学习笔记

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一、Retrofit：

1、对于统一请求参数的封装(封装到请求头中)

public class BaseIntercepter implements Interceptor {    @Override    public Response intercept(Chain chain) throws IOException {        //加入请求头的信息        Request request = chain.request();        request.newBuilder().addHeader("token","xxxx").build();        Response response = chain.proceed(request);        return response;    }}

2、实体类解析

（1）实体基类

public class BaseEntity<T>{    // 接口请求返回带状态码    public int code;    // 服务器返回的提示信息    public String tip;    //data数据    public T data;}

3、网络请求管理类：

public class BaseHttpMethod {    private static BaseHttpMethod instance;    private Context mContext;    private Retrofit retrofit;    private static final String baseUrl = "http://101.200.xxx.xx/api/";    //手动创建一个OkHttpClient    private OkHttpClient okHttpClient(){        //设置log显示        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();        logging.setLevel(HttpLoggingInterceptor.Level.BODY);        return new OkHttpClient.Builder()                .retryOnConnectionFailure(true) //失败重连                .readTimeout(60*1000, TimeUnit.MILLISECONDS)                .addNetworkInterceptor(logging) //拦截器                .addInterceptor(new BaseIntercepter())                .build();    }    public BaseHttpMethod(){        retrofit = new Retrofit.Builder()                .baseUrl(baseUrl)                .addConverterFactory(GsonConverterFactory.create())                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())                .client(okHttpClient())                .build();    }    public static BaseHttpMethod getInstance(){        if (instance==null){            synchronized (BaseHttpMethod.class){                instance = new BaseHttpMethod();            }        }        return  instance;    }    public <T> T create(Class<T> service){        return  retrofit.create(service);    }}

二、RxJava

1、对于返回值的统一处理

（1）处理完成后的回调接口

public interface ApiCallBack<T> {    void onSuccess(T model);    void onFailure();    void onCompleted();}

（2）进行统一处理:

public class SubscriberCallBack<T> extends Subscriber<T> {    private ApiCallBack<T> apiCallBack; //回调监听    public SubscriberCallBack(ApiCallBack<T> apiCallBack) {        this.apiCallBack = apiCallBack;    }    @Override    public void onCompleted() {        apiCallBack.onCompleted();    }    @Override    public void onError(Throwable e) {        e.printStackTrace();        apiCallBack.onFailure();    }    @Override    public void onNext(T t) {        if (t instanceof BaseEntity){            BaseEntity<T> entity = (BaseEntity<T>) t;            if (entity.code==1000){                Log.e("aa","成功了");            }        }        apiCallBack.onSuccess(t);    }}

三、MVP：

1、BasePresent:model和view交互的桥梁

public class BasePresenter {    private CompositeSubscription mCompositeSubscription;    private BaseView view;    public BasePresenter(){    }    public BasePresenter(BaseView view){        this.view = view;    }    //Rxjava取消注册，避免内存泄露    public void onUnsubscribe(){        view = null;        if (mCompositeSubscription!=null&&mCompositeSubscription.hasSubscriptions()){            mCompositeSubscription.unsubscribe();        }    }    public void addSubscription(Observable observable, Subscriber subscriber){        if (mCompositeSubscription==null){            mCompositeSubscription = new CompositeSubscription();        }        mCompositeSubscription.add(observable        .subscribeOn(Schedulers.io())        .observeOn(AndroidSchedulers.mainThread())        .subscribe(subscriber));    }}

三、简单登录页面demo：

1、LoginContract便于管理model，view，present的接口

public interface LoginContract {    abstract class Presenter extends BasePresenter{        //登陆        abstract void login(String mobile,String code);        //发送验证码        abstract void sendVifycode(String moble);    }    interface View extends BaseView{        void showSendVifyToast(BaseEntity<String> baseEntity);        void loginSuccess(BaseEntity<UserEntity> userEntity);    }    //封装网络请求    interface Model {        @GET("user/vercodeLogin.go?")        Observable<BaseEntity<UserEntity>> login(@Query("mobileNo") String phone,@Query("vercode") String code,@Query("appType") int type);        @GET("user/sendVerCode.go?")        Observable<BaseEntity<String>> sendVifyCode(@Query("mobileNo") String phone);    }}

2、LoginActivity：将网络请求需要的数据传给present，将present返回的数据做页面显示处理。

public class LoginActivity extends Activity implements LoginContract.View, View.OnClickListener {    private LoginContract.Presenter mPresenter;    private EditText mobileText;    private EditText vercodeText;    private Button submitBtm;    private Button loginBtm;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_login);        mPresenter = new LoginPresenter(this);        mobileText = (EditText) findViewById(R.id.id_login_mobilno_value);        vercodeText = (EditText) findViewById(R.id.id_login_vercode_value);        submitBtm = (Button) findViewById(R.id.id_login_vercode_btn);        loginBtm = (Button) findViewById(R.id.id_login_btn);        submitBtm.setOnClickListener(this);        loginBtm.setOnClickListener(this);    }    //发送验证码后的页面处理    @Override    public void showSendVifyToast(BaseEntity<String> baseEntity) {    }//登录成功@Overridepublic void loginSuccess(BaseEntity<UserEntity> userEntity) {   }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.id_login_vercode_btn:                mPresenter.sendVifycode(mobileText.getText().toString());                break;            case R.id.id_login_btn:                mPresenter.login(mobileText.getText().toString(),vercodeText.getText().toString());                break;            default:                break;        }    }}

3、LoginModel：数据请求的操作：

public class LoginModel extends BaseModel implements LoginContract.Model {    LoginContract.Model service = BaseHttpMethod.getInstance().create(LoginContract.Model.class);    @Override    public Observable<BaseEntity<UserEntity>> login(String phone,String code,int type) {        return service.login(phone,code,type);    }    @Override    public Observable<BaseEntity<String>> sendVifyCode(String phone) {        return service.sendVifyCode(phone);    }}

4、LoginPresent：

public class LoginPresenter extends LoginContract.Presenter{    private LoginContract.View mView;    private LoginModel loginModel;    public LoginPresenter(LoginContract.View view){        this.mView = view;        loginModel = new LoginModel();    }    @Override    void login(String mobile, String code) {        addSubscription(loginModel.login(mobile,code,0),new SubscriberCallBack(new ApiCallBack<BaseEntity<UserEntity>>() {            @Override            public void onSuccess(BaseEntity<UserEntity> model) {                //登录成功                mView.loginSuccess(model);            }            @Override            public void onFailure() {            }            @Override            public void onCompleted() {            }        }));    }        @Override    public void sendVifycode(String moble) {        addSubscription(loginModel.sendVifyCode(moble),new Subscriber<BaseEntity<String>>() {            @Override            public void onCompleted() {            }            @Override            public void onError(Throwable e) {            }            @Override            public void onNext(BaseEntity<String> baseEntity) {                mView.showSendVifyToast(baseEntity);            }        });    }}

学习推荐：

Rxjava：http://gank.io/post/560e15be2dca930e00da1083

MVP：http://www.jianshu.com/p/b49958e1889d

http://wuxiaolong.me/2016/06/12/mvpRetrofitRxjava/

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