Use of Okhttp

Simply say the reason for learning okhttp

1. Google removed the HttpClient API from Android 6.0, using the Okhttp
2. Efficient use of HTTP to make applications run faster and with less traffic
3. Respond to cached data to avoid duplicate network requests
4. Seamless support for gzip to reduce data traffic
5. Using a very simple, Request-and-response API with smooth construction and immutability, while supporting synchronous asynchronous invocation of callback functions
6. If there is a problem with the network, it recovers from common connectivity problems
7. If a server is configured with multiple IP addresses, when the first IP connection fails, it tries to connect to the next IP

The above is Okhttp official website http://square.github.io/okhttp/and combine some of the online understanding to organize

Configuring the Environment

Add in Builde.gradle

' com.squareup.okhttp3:okhttp:3.4.1 '

Add the required permissions in Androidmanifest.xml

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

Basic use

Import com.google.gson.Gson;
Import com.google.gson.JsonParseException;
Import com.google.gson.JsonSyntaxException;

Import java.io.IOException;
Import java.util.Map;
Import java.util.concurrent.TimeUnit;

Import okhttp3. call;
Import okhttp3. Callback;
Import okhttp3. formbody;
Import okhttp3. okhttpclient;
Import okhttp3. Request;
Import okhttp3. requestbody;
Import okhttp3. Response;

/**
* Created by 95224 on 2016.
*/
public class Okhttphelper {
private static Okhttpclient okhttpclient;
Private Gson mgson;
Private Okhttphelper () {
Okhttpclient =new okhttphelper.builder (). connecttimeout (timeunit.seconds). writetimeout (10,TimeUnit.SECONDS)
. ReadTimeout (20,timeunit.seconds)
. Build ();
Mgson = new Gson ();
}

public static Okhttphelper getinstance () {

return new Okhttphelper ();
}

public void DoRequest (final request request, final Basecallback Callback) {
Callback.onrequestbrfore (request);
Okhttpclient.newcall (request) enqueue (new Callback () {
@Override
public void OnFailure (call call, ioexception E) {
Callback.onfailure (request,e);
}

@Override
public void Onresponse (call call, Response Response) throws IOException {
If (response.issuccessful ()) {
String Resultstr=response.body (). string ();
if (callback.mtype = = String.class) {
Callback.onsuccess (response,resultstr);
}else{
try {
Object object = Mgson.fromjson (resultstr, callback.mtype);
Callback.onsuccess (response, object);
}catch (jsonsyntaxexception E) {
Callback.onerror (response,response.code (), e);
}catch (jsonparseexception E) {
Callback.onerror (response,response.code (), e);
}
}
}else{
Callback.onerror (response,response.code (), null);
}
}
});
}

public void Get (String url,basecallback callback) {
Request Request = Buildrequest (url, null, httpmethodtype.get);
DoRequest (request,callback);
}

public void post (String url, map<string, object> params,basecallback Callback) {
Request Request =buildrequest (url,params, httpmethodtype.post);
DoRequest (request,callback);
}

Private Request buildrequest (String url, map<string, object> params, httpmethodtype Methodtype) {
Request.builder Builder = new Request.builder ();
Builder.url (url);
if (methodtype = = Httpmethodtype.get) {
Builder.get ();
} else if (methodtype = = Httpmethodtype.post) {
Requestbody BODY = Buildformatdata (params);
Builder.post (body);
}
return Builder.build ();
}

Private Requestbody buildformatdata (map<string, object> Params) {
Formbody.builder builder=new Formbody.builder ();
If (params!=null) {
For (map.entry<string,object> Entry:params.entrySet ()) {
Builder.add (entry.getkey (), entry.getvalue (). toString ());
}
}
return Builder.build ();
}

Enum httpmethodtype{
Get,post
}

Use of Okhttp