Registration, Login and Category List with DOTNET MVC

Register Activity

package net.samaysoftware.listviewdemo;

import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import utility.HttpManager;
import utility.RequestPackage;

public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {

    EditText etName, etMobile, etEmail, etUsername, etPassword, etAddress, etCity;
    Button btnRegister;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        findAllViews();

        btnRegister.setOnClickListener(this);


    }

    private void findAllViews() {
        etName = (EditText)findViewById(R.id.etCName);
        etEmail = (EditText)findViewById(R.id.etCEmail);
        etMobile = (EditText)findViewById(R.id.etCMobile);
        etUsername = (EditText)findViewById(R.id.etCUsername);
        etPassword = (EditText)findViewById(R.id.etCPassword);
        etAddress = (EditText)findViewById(R.id.etCAddress);
        etCity = (EditText)findViewById(R.id.etCCity);
        btnRegister = (Button) findViewById(R.id.btnRegister);
    }

    @Override    public void onClick(View view) {
        new MyTask().execute();
    }

    class MyTask extends AsyncTask<String, String, String>{
        String name, email, mobile, address, city, username, password;

        @Override        protected void onPreExecute() {
            super.onPreExecute();
            name = etName.getText().toString();
            email = etEmail.getText().toString();
            mobile = etMobile.getText().toString();
            address = etAddress.getText().toString();
            city = etCity.getText().toString();
            username = etUsername.getText().toString();
            password = etPassword.getText().toString();

        }



        @Override        protected String doInBackground(String... strings) {

            RequestPackage rp = new RequestPackage();
            rp.setMethod("GET");
            rp.setUri("http://192.168.31.163:49962/MobileApp/SignUp");
            rp.setParam("Cname",name);
            rp.setParam("Email",email);
            rp.setParam("Mobile",mobile);
            rp.setParam("Username",username);
            rp.setParam("Password",password);
            rp.setParam("City",city);
            rp.setParam("Address",address);


            String ans = HttpManager.getData(rp);



            return ans.trim();
        }

        @Override        protected void onPostExecute(String s) {
            super.onPostExecute(s);

            if(s.equals("success")){
                Toast.makeText(RegisterActivity.this, "Registration is successful !!", Toast.LENGTH_LONG).show();
                Intent i = new Intent(RegisterActivity.this, LoginActivityDemo.class);
                startActivity(i);
                finish();

            }
            else{
                Toast.makeText(RegisterActivity.this, "There seems to be some problem, please try again later !!", Toast.LENGTH_LONG).show();
            }

        }
    }

}

LoginActivity

package net.samaysoftware.listviewdemo;

import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import utility.HttpManager;
import utility.RequestPackage;

public class LoginActivityDemo extends AppCompatActivity implements View.OnClickListener {
    String un, pw;
    EditText etUser, etPass;
    Button btnLogin;
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login_demo);
        etUser = (EditText) findViewById(R.id.etUser);
        etPass = (EditText) findViewById(R.id.etPass);
        btnLogin = (Button) findViewById(R.id.btnMyLogin);
        btnLogin.setOnClickListener(this);


      /*  SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(LoginActivityDemo.this);        int oldid = sp.getInt("id", -1000);        if(oldid!=-1000){            Intent i = new Intent(LoginActivityDemo.this, CategoryListActivity.class);            startActivity(i);            finish();        }*/
    }

    @Override    public void onClick(View view) {
        new LoginTask().execute();
    }

    class LoginTask extends AsyncTask<String, String, String>{
        ProgressDialog pd;
        String un, pw;

        @Override        protected void onPreExecute() {
            super.onPreExecute();
            un = etUser.getText().toString();
            pw = etPass.getText().toString();
            pd = new ProgressDialog(LoginActivityDemo.this);
            pd.setTitle("Please Wait");
            pd.setMessage("Loading");
            pd.setIndeterminate(true);
            pd.setCancelable(false);
            pd.show();
        }

        @Override        protected String doInBackground(String... arr) {
            RequestPackage rp = new RequestPackage();
            rp.setMethod("GET");
            rp.setUri("http://192.168.31.163:49962/MobileApp/SignIn");

            rp.setParam("Username", un);
            rp.setParam("Password", pw);

            String ans = HttpManager.getData(rp);
            return ans.trim();
        }

        @Override        protected void onPostExecute(String ans) {
            super.onPostExecute(ans);

            if(pd!=null){
                pd.dismiss();
            }
/*            int id;            try {                id = Integer.parseInt(ans);            }catch (Exception ee){                Toast.makeText(LoginActivityDemo.this, "Cannot connect to server", Toast.LENGTH_LONG).show();                return;            }
            if(id==0){                Toast.makeText(LoginActivityDemo.this, "Invalid username or password !!", Toast.LENGTH_LONG).show();                return;            }
            SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(LoginActivityDemo.this);            sp.edit().putInt("id", id).apply();*/
            if(ans.equals("success")) {
                Intent i = new Intent(LoginActivityDemo.this, CategoryListActivity.class);
                startActivity(i);
                finish();
            }
            else{
                Toast.makeText(LoginActivityDemo.this, "Invalid username or password !!", Toast.LENGTH_LONG).show();

            }

        }


    }
}



CATEGORY LIST



package net.samaysoftware.listviewdemo;

import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.*;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;

import utility.HttpManager;
import utility.RequestPackage;

public class CategoryListActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {
    ListView listView;
    ArrayList<String> arrlist = new ArrayList<>();
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_country_list);
        listView = (ListView) findViewById(R.id.lvDynamicCountries);

        new MyTask().execute();


    }

    @Override    public void onItemClick(AdapterView<?> adapterView, View view, int pos, long l) {
        String catname = arrlist.get(pos);
        Intent i = new Intent(this, ProductListActivity.class);
        i.putExtra("catname", catname);
        startActivity(i);

/*        AlertDialog.Builder builder1 = new AlertDialog.Builder(this);        builder1.setMessage("Are you sure you want to delete");        builder1.setCancelable(true);
        builder1.setPositiveButton(                "Yes",                new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();                    }                });
        builder1.setNegativeButton(                "No",                new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int id) {                        dialog.cancel();                    }                });
        AlertDialog alert11 = builder1.create();        alert11.show();*/
/*        AlertDialog.Builder builderSingle = new AlertDialog.Builder(this);        builderSingle.setIcon(R.drawable.flagindia);        builderSingle.setTitle("Select One Name:");
        final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.select_dialog_singlechoice);        arrayAdapter.add("Hardik");        arrayAdapter.add("Archit");        arrayAdapter.add("Jignesh");        arrayAdapter.add("Umang");        arrayAdapter.add("Gatti");
        builderSingle.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                dialog.dismiss();            }        });
        builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                String strName = arrayAdapter.getItem(which);                AlertDialog.Builder builderInner = new AlertDialog.Builder(CategoryListActivity.this);                builderInner.setMessage(strName);                builderInner.setTitle("Your Selected Item is");                builderInner.setPositiveButton("Ok", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog,int which) {                        dialog.dismiss();                    }                });                builderInner.show();            }        });        builderSingle.show();
*/
    }

    class MyTask extends AsyncTask<String, String, String>{

        ProgressDialog pd = null;
        @Override        protected String doInBackground(String... strings) {
            RequestPackage rp = new RequestPackage();
            rp.setMethod("GET");
            rp.setUri("http://192.168.31.163:49962/MobileApp/GetAllCategories");
            String ans = HttpManager.getData(rp);
            return ans.trim();
        }

        @Override        protected void onPreExecute() {
            super.onPreExecute();
            pd = new ProgressDialog(CategoryListActivity.this);
            pd.setIndeterminate(true);
            pd.setMessage("Loading....");
            pd.setCancelable(false);
            pd.setTitle("Please Wait");
            pd.show();
        }

        @Override        protected void onPostExecute(String ans) {
            super.onPostExecute(ans);

            //arr = ans.split(",");
            JSONArray arr = null;
            try {
                arr = new JSONArray(ans);
                for(int i = 0; i < arr.length(); i++){
                    JSONObject obj = arr.getJSONObject(i);
                    String catname = obj.getString("CatName");
                    arrlist.add(catname);
                }


            } catch (JSONException e) {
                e.printStackTrace();
            }


            ArrayAdapter<String> aa = new ArrayAdapter<>(CategoryListActivity.this, android.R.layout.simple_list_item_1, android.R.id.text1, arrlist);
            listView.setAdapter(aa);
            listView.setOnItemClickListener(CategoryListActivity.this);
            pd.dismiss();
        }
    }
}