Android access to PHP to extract JSON data

do Android projects, without going to the server to fetch data, typically is Android access to PHP to extract JSON data. Similar examples on the internet a lot of, and incredibly code is the same, I want to spit, you send the code is not complete, this is not deceptive.

To do this project, we need to use the dependency package (jar package) provided by Apache: ①httpclient②httpcore③http-mimi④apache-mime4j

International practice: First on the demo, download address: Android access to PHP to extract JSON data

Let's familiarize ourselves with the JSON data format under PHP

e.g.

$tnnowu = Array (' username ' = ' know matcha know ', ' password ' = ' 666 ', ' user_id ' = 1); echo Json_encode ($TNNOWU);

then we write the Java code

Mainactivity.java

Package Com.cnwuth.getjson;import Android.support.v7.app.appcompatactivity;import Android.os.bundle;import Android.util.log;import Org.apache.http.httpresponse;import Org.apache.http.client.httpclient;import Org.apache.http.client.methods.httpget;import Org.apache.http.impl.client.defaulthttpclient;import Org.json.jsonobject;import Java.io.bufferedreader;import Java.io.inputstreamreader;public class MainActivity Extends appcompatactivity{@Override protected void onCreate (Bundle savedinstancestate) {super.oncreate (save        Dinstancestate);    Setcontentview (R.layout.activity_main); private void Starturlcheck (String username,string password) {HttpClient HttpClient = new Defaulthttpclient        ();        StringBuilder StringBuilder = new StringBuilder ();        HttpGet httpget = new HttpGet ("xxx.xxx.php");            try {HttpResponse HttpResponse = Httpclient.execute (HttpGet); BufferedReader BufferedReader = new BufferedReader (New InpuTstreamreader (Httpresponse.getentity (). GetContent ())); for (String s = bufferedreader.readline (); S!=null;s=bufferedreader.readline ()) {STRINGBUILDER.A            Ppend (s);            } jsonobject jsonobject = new Jsonobject (stringbuilder.tostring ());            String re_username = jsonobject.getstring ("username");            String Re_password = jsonobject.getstring ("password");            int re_user_id = Jsonobject.getint ("user_id");            Settitle ("User id_" + re_user_id);            LOG.V ("url response", "true=" + re_username);        LOG.V ("url response", "true=" + Re_password);            } catch (Exception e) {log.v ("url response", "false");        E.printstacktrace (); }    }}

Finally, network permissions are required to access the data

Androidmainifest.xml

follow me on the latest news; Sina Weibo @ Wu Tianhao Tnnowu

The above describes the Android access to PHP to extract JSON data, including aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

