Pre-network Android Pre-load network framework

Network optimization is a very important part of all app development, and if the network request is preceded by a click to jump activity, the speed of the network load will be improved. That is, the network pre-load box frame.

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Framework Description

Pre-network: It is a pre-loading frame based on the observer pattern, which can optimize the load speed of the network; Each network request corresponds to the observer, as long as the subscribed observer can get the instance of the Observer.

Basic Use Method

Add Dependencies:

implementation ‘com.liyihang:pre-network:1.2.2‘

Each observer network must have a string unique ID to identify him, and the observer subscription is also identified by a unique ID that is then subscribed to by the Observer.
Here for example one the observer requested of I is web_data;

First, the Observer network request is created;
The code is as follows:

PreNetworkHelper.getInstance()                    .removeRequestObservable("web_data") // 首先清楚之前的相同id的被观察者请求移除，如果不移除相同id请求没有办法添加进入。                    .addRequestObservable(new PNQuickRequest("web_data", "http://baidu.com/"));// 添加被观察者，添加后立即执行网络请求。

Pnquickrequest is a simple encapsulation of the observer; You can look at the code:

Package Com.prenetwork.liyihang.lib_pre_network;import java.util.map;/** * Created is Liyihang on 18-1-16.    */public class Pnquickrequest extends Pnrequestobservable {private String ID;    Private String URL;    Private String parms;    Private map<string, string> header;        Public pnquickrequest (string id, string url) {this.id = ID;        This.url = URL;        Parms=null;    Header=null;        } public pnquickrequest (string id, string URL, string parms) {this.id = ID;        This.url = URL;        This.parms = parms;    Header=null;        } public pnquickrequest (string id, string URL, string parms, Map<string, string> header) {this.id = ID;        This.url = URL;        This.parms = parms;    This.header = header;    } @Override Public String getId () {return id;    } @Override public map<string, string> Getrequestheader () {return header;        } @Override Public String getrequestparms () {return parms;    } @Override Public String Getrequesturl () {return URL; }}

Where ID is the unique ID, URL network request address, Parm network request parameter, header network request request headers field.

How to subscribe to the request code is as follows:

PreNetworkHelper.getInstance().addObserver(new PNObserver() {            @Override            public void call(PNRequestObservable observable) {                final String result = observable.getResult();// 获取网络请求内容 ， 这里发生在非ui线程中。observable就是被观察者实例                runOnUiThread(new Runnable() {                    @Override                    public void run() {                        //... do samething                    }                });            }            @Override            public String getId() {                return "web_data";// 唯一id            }        

In-depth use

Basically the company development app will encapsulate its own network request framework, Pre-network Use network request is the base httpurlconnection:

        executor.submit(new Runnable() {            @Override            public void run() {                if ("GET".equals(getRequestMethod()))                    result = PNGetPostUtil.sendGet(getRequestUrl(), getRequestParms(), getRequestHeader());                if ("POST".equals(getRequestMethod()))                    result = PNGetPostUtil.sendPost(getRequestUrl(), getRequestParms(), getRequestHeader());                dataChange();            }        });

So it is to use their own company network request, first to create a implementation of the Pnrequestobservable class of the request body, where an inheritance okhttp as an example:

/** * Created by Liyihang on 18-1-17. */public class Myrequestobservable extends Pnrequestobservable {private static final okhttpclient http_client=new Okht    Tpclient (); @Override public String getId () {return ' request_id ';//Unique ID} @Override public map<string, string& Gt    Getrequestheader () {return null;    } @Override Public String getrequestparms () {return null;    } @Override Public String Getrequesturl () {return null; } @Override public void Handlerrequest () {//Super.handlerrequest (); Closes the original network request processing method Request.builder Bui        Lder=new Request.builder ();        Builder.url ("https://www.baidu.com/"); Http_client.newcall (Builder.build ()). Enqueue (New Callback () {@Override public void onfailure (reques            T request, IOException E) {//The network must be called requestpost (NULL) after completion; } @Override public void Onresponse (Response Response) throws IOException {String data = Response.body (). String ();            Do samething ...//the network must call Requestpost (data) after completion;    }        }); }}

Calling methods such as:

        PreNetworkHelper.getInstance()                .removeAllObservable()// 删除所有请求                .addRequestObservable(new MyRequestObservable())// 添加请求和执行                .addObserver(new PNObserver() { //添加回调                    @Override                    public void call(PNRequestObservable observable) {                        MyRequestObservable result= (MyRequestObservable) observable;                        PNUtils.msg("end:"+result.getResult());                    }                    @Override                    public String getId() {                        return "request_id";                    }                })                .removeAllObservable();

One voyage

Pre-network Android Pre-load network framework