Retrofit+rxjava Brief Introduction

Retrofit is a very popular network request library now.

Want to use it first reference in the Gradle file

Compile ' com.squareup.retrofit2:retrofit:2.1.0  ' com.squareup.retrofit2:adapter-rxjava:2.1.0 '    compile ' com.squareup.retrofit2:converter-gson:2.0.2 '

RxJava is an asynchronous responsive programming library for Java voice

Compile ' io.reactivex.rxjava2:rxjava:2.0.1 ' compile ' io.reactivex.rxjava2:rxandroid:2.0.1 '

Use of Retrofit

Create a Retrofit Object

Private Static void Initretrofit () {        new  retrofit.builder ()                . BASEURL ("http://www.weather.com.cn/" )                . Client (sokhttpclient).                addcalladapterfactory (Rxjavacalladapterfactory.create ())                . Addconverterfactory (Gsonconverterfactory.create ())                . Build ();    }

Client settings okhttp for interceptor settings

Addcalladapterfactory () setting supports Rxjava return value of oservable<m>

Addconverterfactory () setting supports Gson directly returning entity classes

Next, you create a Okhttpclient.buildr object

　　

New Okhttpclient.builder ();

1 setting result interceptors

Interceptor Cacheinterceptor =NewInterceptor () {@Override PublicResponse Intercept (Chain Chain)throwsIOException {Request Request=chain.request (); if(!commonutil.isnetworkconnected (Myapplication.getinstance ())) {Request=Request.newbuilder (). CacheControl (Cachecontrol.force_cache). b                Uild (); } Response Response=chain.proceed (Request); Response.builder Newbuilder=Response.newbuilder (); if(commonutil.isnetworkconnected (Myapplication.getinstance ())) {intMaxAge = 0; //Set Cache timeout time 0 hours when there is a networkNewbuilder.header ("Cache-control", "public, max-age=" +MaxAge); } Else {                    //set timeout to 4 weeks when no network                    intMaxstale = 60 * 60 * 24 * 28; Newbuilder.header ("Cache-control", "Public, only-if-cached, max-stale=" +Maxstale); }                returnNewbuilder.build (); }        };

Here's a network to get the latest, no web cache

Add to Builder;

2. Set up the request blocker

Interceptor Requestinterceptor =NewInterceptor () {@Override PublicResponse Intercept (Chain Chain)throwsIOException {Request Request=chain.request (). Newbuilder (). AddHeader ("Accept", "Application/vnd.yu.v4+json"). AddHeader ("Content-type", "Application/json"). AddHeader ("Range", "Page:1,max:10"). AddHeader ("Authorization", "" "). Build (); Request.headers (). toString ()); returnchain.proceed (Request); }        };

Commonly used when unified header is set

Builder.addnetworkinterceptor (Requestinterceptor);

Set time-out to re-connect

Builder.connecttimeout (timeunit.seconds), Builder.readtimeout (timeunit.seconds); Builder.writetimeout (timeunit.seconds); Builder.retryonconnectionfailure (true);
return Builder.build ();

Okhttp Setup is complete.

Next go to set Apicallback

Using Rxjava Subscriptions

Apicallback<m> is abstract to inherit subscriber<m>

 Public Abstract classApicallback<m>extendsSubscriber<m> {     Public Abstract voidonsuccess (M model);  Public Abstract voidonfailure (String msg);  Public Abstract voidonfinish (); @Override Public voidOnError (Throwable e) {e.printstacktrace (); if(EinstanceofHttpException) {HttpException HttpException=(HttpException) e; intCode =Httpexception.code (); String msg=Httpexception.getmessage (); if(Code = = 504) {msg= "Network does not give force"; }            if(Code = = 502 | | code = = 404) {msg= "Server exception, please try again later";        } onfailure (msg); } Else{onfailure (E.getmessage ());    } onfinish (); } @Override Public voidOnNext (M model) {onsuccess (model); } @Override Public voidoncompleted () {onfinish (); }}

Next, write Apiservice.

Apiservice is an interface.

Retrofit the request method provided by the annotation to modify the variable generated URL, etc.

Rxjava Way

@GET ("adat/sk/{cityid}.html") Observable<MainModel> Getmainbanner (@Path ("Cityid") String Cityid ); // Request Way @get, @POST, @PUT @DELETE, etc. (@Path ("Cityid") String Cityid)    //modify the corresponding variable in the path {Cityid}@POSTObservable<MainModel>  Gettasktoken (@Url string Url, @Body string Body), @Headers ({"Accept:application/json", "content-type:application /json "}) @GETObservable<RecordsTask> getmaintask (@Url string Url, @Header (" Authorization ") string token);

The above is simple to write a few of the most include

What you need is already configured, so use it below.

　　

// Rxjava Registration     Public void addsubscription (Observable Observable, subscriber subscriber) {        ifnull) {             New  compositesubscription ();        }        Mcompositesubscription.add (Observable                . Subscribeon (Schedulers.io ())                . Observeon ( Androidschedulers.mainthread ())                . Subscribe (subscriber));    }

Write the contents of the above in base

Subscribeon (): Specify

Subscribe() The thread that occurs when Observable.onsubscribe is activated. Or an event-generated thread.

Observeon(): Specifies the thread that the user is running. Or a thread called event consumption.

Use the Subscribeon () and Observeon () two methods to control the thread.

called in Activity

 Public voidLoadweather (String city) {addsubscription (Mapiservice.getmainbanner),NewApicallback<mainmodel>() {@Override Public voidonsuccess (Mainmodel response) {mmvpview.onsuccess (response); } @Override Public voidonfailure (String msg) {mmvpview.onfail (msg,1); } @Override Public voidonfinish () {}}); }

At the end, you also need to cancel Rxjava registration to avoid memory leaks

 Public void Onunsubscribe () {        ifnull && mcompositesubscription.hassubscriptions ()) {            mcompositesubscription.unsubscribe ();        }    }

End.

Retrofit+rxjava Brief Introduction