RxJavaRetrofitMVP.docx

1、RxJavaRetrofitMVPMVP:Model：控制层View：视图层，一般由activity或者fragment继承Presenter：中间调节层，一般在activity或者fragment中创建presenter对象，在presenter中对model和view进行操作。Bean：实体类Bean:Public class User SerializedName(user_name) Private string name;SerializedName(user_age) Private string ageGet,set方法设置View ：视图类一般是接口，只有方法没有实现，主要就是

2、对activity或者fragment中的内容，比如ShowProgress；HideProgress；UpdateList；然后让fragment或者activity实现此接口Model:实现类创建ShadowModel接口，里面包含需要实现的方法，getSegmentList（）；创建ShadowModelImpl类，实现ShadowMod接口，实现接口的方法。因为此次介绍是使用的retrofit+rxjava的实现网络访问，所以我们另外创建两个类别：ApiManger类：public static File httpCacheDirectory = new File(MyApplicat

3、ion.getContext().getCacheDir(), shadow); private static int cacheSize = 10 * 1024 * 1024; / 10 MiB 缓存大小 private static Cache cache = new Cache(httpCacheDirectory, cacheSize); 创建缓存对象Interceptor是拦截器, 在发送之前, 添加一些公共参数, 或者获取一些信息。 private static final Interceptor REWRITE_CACHE_CONTROL_INTERCEPTOR = new In

4、terceptor() Override 创建拦截器 public Response intercept(Chain chain) throws IOException Request request = chain.request(); if (!NetWorkUtil.isNetWorkAvailable(MyApplication.getContext() request = request.newBuilder() .cacheControl(CacheControl.FORCE_CACHE) .build(); Response originalResponse = chain.pr

5、oceed(request); if (NetWorkUtil.isNetWorkAvailable(MyApplication.getContext() int maxAge = 60; / 在线缓存在1分钟内可读取 return originalResponse.newBuilder() .removeHeader(Pragma) .removeHeader(Cache-Control) .header(Cache-Control, public, max-age= + maxAge) .build(); else int maxStale = 60 * 60 * 24 * 28; / 离

6、线时缓存保存4周 return originalResponse.newBuilder() .removeHeader(Pragma) .removeHeader(Cache-Control) .header(Cache-Control, public, only-if-cached, max-stale= + maxStale) .build(); ; public static OkHttpClient client = new OkHttpClient.Builder() .addNetworkInterceptor(REWRITE_CACHE_CONTROL_INTERCEPTOR)

7、.addInterceptor(REWRITE_CACHE_CONTROL_INTERCEPTOR) .cache(cache) .build(); public static ApiManage apiManage; public static ApiManage getInstence() if (apiManage = null) synchronized (ApiManage.class) if (apiManage = null) apiManage = new ApiManage(); return apiManage; ShadowApi接口：public interface S

8、hadowApi GET(/api/4/news/latest) Observable getLastDaily(); GET(/api/4/news/id) Observable getZhihuStory(Path(id) String id); Retrofit 有很多注解，GET POST DELETE 等等主要是说请求方式1.GET(/api/4/news/latest) = http:/news- /api/4/news/latestObservable getLastDaily(); 2.GET(/api/4/news/before/date) http:/news- /api/

9、4/news/before?date = date Observable getTheDaily(Path(date) String date); 3. GET(/api/4/news/id) http:/news- /api/4/news?id = idObservable getZhihuStory(Path(id) String id);4.GET(/weather) 多个参数请求 Observable getWeather(Query(q) String place, Query(units) String units);5.GET(applist/apps/detail) 参数不固定

10、的时候Call getDetail(QueryMap Map param);6.GET(applist/apps/detail?type=detail) 静态参数，动态参数混合使用Call getDetail(Query(appid) String appid);7.Headers(Accept-Encoding: application/json) 固定添加header，但是一般都是写个拦截器，在httpclient中进行设置GET(applist/apps/detail?type=detail)Call getDetail(Query(appid) String appid);8.Head

11、ers( 多个header的时候 X-Foo: Bar, X-Ping: Pong )POST请求不能把数据放在URL中，需要放在请求体中，所以我们可以这样做：1POST(/login/)Observablelogin(post(Body User user);User是个对象，所以我们在传递参数的时候需要传递一个对象过来。2通过Field来指定key，后面跟上valueFormUrlEncodedPOST(/newfind/index_ask) Observable getDaJia(Field(page) int page, Field(pageSize) int size, Field(

12、tokenMark) long tokenMark, Field(token) String token);3请求体过多，采用map传递参数，直接传过来封装好的map即可FormUrlEncodedPOST(FundPaperTrade/AppUserLogin)Observable getTransData(FieldMap Map map);以上三种请求都是以键值对形式去请求，但是一般项目中post请求除了键值对，也还会遇到json、xml的请求，后台也做了约束，约束其上传格式为json/xml,无默认（防止不认识上传的东东），所以一般要添加头文件（测试必须得用fiddle，可减少一大半时

13、间，悔）下面谈谈如何添加头文件，第一种方式直接在api中请求方式之上添加，如下： 1.Headers(Content-type:application/json, Content-Length:59)*/POST(FundPaperTrade/AppUserLogin)Observable getTransData(Body TestBean str);2.为了方便使用可以写个拦截器，为每个请求都添加header，下面的APImanager进行的详细的设置public class HttpInterceptor implements Interceptor Override public Re

14、sponse intercept(Chain chain) throws IOException Request.Builder builder = chain.request().newBuilder(); Request requst = builder.addHeader(Content-type, application/json).build(); return chain.proceed(requst); 最后配置网络处加入client.interceptors().add(new HttpInterceptor();一定要注意用json上传，Body中千万不能写String类型，

15、否则会导致请求体构造错误（json格式不正确，多出），正确写法如下： POST(FundPaperTrade/AppUserLogin) Observable getTransData(Body TestBean str);/实体对象ShadowModelImpl：Private Object object = new Object（）；Private ShadowApi shadowApi;public ShadowApi getShadowApiService() if (shadowApi = null) synchronized (object) if (shadowApi = nul

16、l) shadowApi = new Retrofit.Builder() .baseUrl(http:/news-) .addCallAdapterFactory(RxJavaCallAdapterFactory.create() .client(ApiManage.client) .addConverterFactory(GsonConverterFactory.create() .build() .create(shadowApi.class); return shadowApi; Presenter：实现model和view之间的联系，model负责获取数据，view负责处理数据。Rx

17、Java网络访问，调度容易引起内存泄漏，所以一般写个BasePresenter接口，用于处理所以的subscription；Public interface BasePresenterVoid unsubscribe()；BasePresenterImpl实现BasePresenter接口Public class BasePresenterImplement implements BasePresenter /获取所有的观察者集合 Private CompositeSubscription compositeSubscription ； Public void addSubcription（S

18、ubcription s） if (this.mCompositeSubscription = null) this.mCompositeSubscription = new CompositeSubscription(); this.mCompositeSubscription.add(s);/实现接口的方法，一般在ondestroy中调用，销毁Public void unsubscribe() mCompoditeSubscription.unsubscribe();基类配置完成，下面就需要配置需要的presenter创建接口ShadowPresenter，要实现的方法是加载网络列表数据g

19、etSegmentList（）；创建类ShadowPresenterImpl 实现ShadowPresenter 继承BasePresenterImpl在构造方法中对view和model进行初始化操作。Private ShadowView shadowView；Private ShadowModel shadowModel；Public ShadowPresenterImpl（ShadowView view） shadowView = view；/因为activity继承shadowview，所以直接传过来即可 shadowModel = new shadowModelmpl（）；然后实现Sh

20、adowPresenter接口的方法,getSegmentList(); Override public void getSegmentList () shadowView.showProgressDialog(); Subscription subscription =shadowMode. getShadowApiService ().getShadowApi() .map(new Func1() Override public Object call(Object object) return object; ) .subscribeOn(Schedulers.io() 线程调度 .ob

21、serveOn(AndroidSchedulers.mainThread() 切换主线程/两种方式来处理返回的数据1-.subscribe(new Action1() Override public void call(Shadow shadow) ); 2-.subscribe(new Observer() Override public void onCompleted() Override public void onError(Throwable e) mZhihuFragment.hidProgressDialog(); mZhihuFragment.showError(e.getM

22、essage(); Override public void onNext(Object object) shadowView.hidProgressDialog(); ); addSubscription(subscription); 添加观察者集合，以便于统一销毁在ShadowPresenterImpl中获取相应的数据，在主线程中就可以对UI主界面进行操作，OK，结束。引用如下：compile com.squareup.retrofit:retrofit:2.0.0-beta2 compile com.squareup.retrofit:converter-gson:2.0.0-beta2

23、 compile com.android.support:recyclerview-v7:24.1.1 compile com.squareup.retrofit2:adapter-rxjava:+ compile com.google.code.gson:gson:+ compile io.reactivex:rxjava:+ compile com.squareup.retrofit:adapter-rxjava:+ compile com.trello:rxlifecycle:+ compile com.trello:rxlifecycle-components:+ compile com.android.support:design:24.1.1 compile com.android.support:support-v4:24.1.1 compile com.android.support:recyclerview-v7:24.1.1 compile com.google.code.gson:gson:2.2.4 compile com.jakewharton:butterknife:5.1.1 compile com.android.support:cardview-v7:24.1.1