mysql - I would like to insert data to phpmyadmin from my android device -

at moment can add users database through postman or emulator need able insert data actual android device .what adjustments have take ? please have @ code below

this main activity using in app :

package ie.example.artur.adminapp;  import android.os.asynctask; import android.os.bundle; import android.support.design.widget.floatingactionbutton; import android.support.design.widget.snackbar; import android.support.v7.app.appcompatactivity; import android.support.v7.widget.toolbar; import android.view.view; import android.view.menu; import android.view.menuitem; import android.widget.button; import android.widget.edittext; import android.widget.textview; import android.widget.toast;  import java.sql.connection; import java.sql.drivermanager; import java.sql.statement; import java.util.hashmap;  import retrofit2.call; import retrofit2.callback; import retrofit2.response;  public class mainactivity extends appcompatactivity {       edittext edittextname,edittextemail,edittextpassword;     textview textview;     private static final string db_url = "jdbc:mysql://10.3.2.51/socialmedia_website";     private static final string user = "zzz";     private static final string pass = "zzz";        @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_register);         findviewbyid(r.id.layoutprogress).setvisibility(view.gone);         textview = (textview) findviewbyid(r.id.textview);         edittextname = (edittext) findviewbyid(r.id.edittextname);         edittextemail = (edittext) findviewbyid(r.id.edittextemail);         edittextpassword = (edittext) findviewbyid(r.id.edittextpassword);          toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar);         setsupportactionbar(toolbar);          floatingactionbutton fab = (floatingactionbutton) findviewbyid(r.id.fab);         fab.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 snackbar.make(view, "replace own action", snackbar.length_long)                         .setaction("action", null).show();             }         });     }      public void btnconn(view view) {          findviewbyid(r.id.layoutprogress).setvisibility(view.visible);          final apiclient apiclient = new apiclient();          string email = edittextemail.gettext().tostring();         string name = edittextname.gettext().tostring();         string password = edittextpassword.gettext().tostring();          hashmap<string,string> parameters = new hashmap<>();         parameters.put("email",email);         parameters.put("name",name);         parameters.put("password",password);          call<apiresponse> call = apiclient.loginuser(parameters);         call.enqueue(new callback<apiresponse>() {             @override             public void onresponse(call<apiresponse> call, response<apiresponse> response) {                 if(response.issuccessful())                 {                     apiresponse apiresponse = response.body();                     if(apiresponse.getstatus() == 200 || apiresponse.getstatus() == 201)                     {                         findviewbyid(r.id.layoutprogress).setvisibility(view.gone);                         send objsend = new send();                         objsend.execute("");                          //toast.maketext(mainactivity.this,"success", toast.length_short);                         textview.settext("success.");                     }                     else                     {                         //toast.maketext(mainactivity.this,apiresponse.geterrors(), toast.length_short);                         textview.settext(apiresponse.geterrors());                     }                  }                 else                 {                     findviewbyid(r.id.layoutprogress).setvisibility(view.gone);                     //toast.maketext(mainactivity.this,"invalid api response.", toast.length_short);                     textview.settext("invalid api response.");                 }             }              @override             public void onfailure(call<apiresponse> call, throwable t) {                 findviewbyid(r.id.layoutprogress).setvisibility(view.gone);                 //toast.maketext(mainactivity.this,"no host available or please check network connectivity.", toast.length_short);                 textview.settext("no host available or please check network connectivity.");             }         });     }      private class send extends asynctask<string, string, string>      {         string msg = "";         string name = edittextname.gettext().tostring();         string email = edittextemail.gettext().tostring();         string password = edittextpassword.gettext().tostring();          @override         protected void onpreexecute() {             textview.settext("please wait inserting data");         }          @override         protected string doinbackground(string... strings) {             try {                 class.forname("com.mysql.jdbc.driver");                 connection conn = drivermanager.getconnection(db_url, user, pass);                 if (conn == null) {                     msg = "connection goes wrong";                 } else {                     string query = "insert users (name,email,password) values('" + name+"','"+email+"','"+password+"')";                     statement stmt = conn.createstatement();                     stmt.executeupdate(query);                     msg = "inserting successful!!";                  }                  conn.close();          }          catch(         exception e         )          {             msg = "connection goes wrong";             e.printstacktrace();          }          return msg;       }    @override     protected void onpostexecute(string msg) {textview.settext(msg);}        }     } 

api client class

package ie.example.artur.adminapp;  import java.util.hashmap;  import okhttp3.okhttpclient; import okhttp3.logging.httplogginginterceptor; import retrofit2.call; import retrofit2.retrofit; import retrofit2.converter.gson.gsonconverterfactory;  /**  * created asifj on 7/25/2017.  */  public class apiclient {     private string base_url = buildconfig.base_url;      apiendpoints apiservice;      public apiclient() {         httplogginginterceptor logging = new httplogginginterceptor();         okhttpclient.builder httpclient = new okhttpclient.builder();         logging.setlevel(httplogginginterceptor.level.body);          httpclient.addinterceptor(logging); // <-- important line!         retrofit retrofit = new retrofit.builder().baseurl(base_url).addconverterfactory(gsonconverterfactory.create()).client(httpclient.build()).build();         apiservice = retrofit.create(apiendpoints.class);     }      public call<apiresponse> loginuser(hashmap<string, string> parameters)     {         return apiservice.usercreate(parameters);     } } 

if need me share more class please let me know in comments

//this class you'll call in main activity

public class postrequest extends asynctask<void, void, string> {      private string parameters;     private context context;      public postrequest(context context) {         this.context = context;         log.d("postrequest", "context set : " + context);     }      public void setparameters(string parameters) {         this.parameters = parameters;         log.d("postrequest", "parameters set : " + parameters);     }      @override     protected string doinbackground(void... params) {          string response = null;          try {              url url = new url("url of php script");             httpurlconnection connection = (httpurlconnection) url.openconnection();             connection.setdooutput(true);             connection.setrequestproperty("content-type", "application/x-www-form-urlencoded");             connection.setrequestmethod("post");              outputstreamwriter request = new outputstreamwriter(connection.getoutputstream());             request.write(parameters);              request.flush();             request.close();             string line = "";             inputstreamreader isr = new inputstreamreader(connection.getinputstream());             bufferedreader reader = new bufferedreader(isr);             stringbuilder sb = new stringbuilder();             while ((line = reader.readline()) != null) {                 sb.append(line + "\n");             }              response = sb.tostring();              isr.close();             reader.close();          } catch (ioexception e) {             // error         }          return response;     }      @override     protected void onpostexecute(string s) {         super.onpostexecute(s);     } } 

//in main activity you'll call so

postrequest postrequest = new postrequest(getcontext());  postrequest.setparameters("param1=" + "param1value" + "&param2=" + "param2value");  postrequest.execute();