public class LoginEmployerActivity extends Activity {
Button btnLoginEmployer;
Button btnLinkToEmployerRegisterScreen;
EditText inputEmail;
EditText inputPassword;
TextView loginErrorMsg;
TextView forgotPassword;

// JSON Response node names
private static String KEY_SUCCESS = "success";
private static String KEY_ERROR = "error";
private static String KEY_ERROR_MSG = "error_msg";
private static String KEY_UID = "uid";
private static String KEY_NAME = "name";
private static String KEY_CNAME = "cname";
private static String KEY_EMAIL = "email";
private static String KEY_CREATED_AT = "created_at";
private ProgressDialog pDialog;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login_employer);

// Importing all assets like buttons, text fields
inputEmail = (EditText) findViewById(R.id.loginEmployerEmail);
inputPassword = (EditText) findViewById(R.id.loginEmployerPassword);
btnLoginEmployer = (Button) findViewById(R.id.btnLoginEmployer);
btnLinkToEmployerRegisterScreen = (Button) findViewById(R.id.btnLinkToEmployerRegisterScreen);
loginErrorMsg = (TextView) findViewById(R.id.login_error);
forgotPassword = (TextView) findViewById(R.id.link_to_forgetPassword);

// Login button Click Event
btnLoginEmployer.setOnClickListener(new View.OnClickListener() {

    public void onClick(View view) {
        // Checking for server respond
            new LoginEmployer().execute();
        }
    }
});

// Link to Register Screen
btnLinkToEmployerRegisterScreen
        .setOnClickListener(new View.OnClickListener() {

            public void onClick(View view) {
                Intent i = new Intent(getApplicationContext(),
                        RegisterEmployerActivity.class);
                startActivity(i);
                finish();
            }
        });

// Link to forgot password link
forgotPassword.setOnClickListener(new View.OnClickListener() {
    public void onClick(View view) {
        // Switching to forgot password screen
        Intent i = new Intent(getApplicationContext(),
                ForgotPasswordEmployerActivity.class);
        startActivity(i);
    }
});
}

// Background ASYNC Task to login by making HTTP Request
class LoginEmployer extends AsyncTask<String, String, String> {

// Before starting background thread Show Progress Dialog
@Override
protected void onPreExecute() {
    super.onPreExecute();
    pDialog = new ProgressDialog(LoginEmployerActivity.this);
    pDialog.setMessage("Authenticating...");
    pDialog.setIndeterminate(false);
    pDialog.setCancelable(false);
    pDialog.show();
}

// Checking login in background
protected String doInBackground(String... params) {
    runOnUiThread(new Runnable() {
        public void run() {

            String email = inputEmail.getText().toString();
            String password = inputPassword.getText().toString();
            EmployerFunctions employerFunctions = new EmployerFunctions();
            JSONObject json = employerFunctions.loginUser(email,
                    password);

            // check for login response
            try {
                if (json.getString(KEY_SUCCESS) != null) {
                    loginErrorMsg.setText("");
                    String res = json.getString(KEY_SUCCESS);
                    if (Integer.parseInt(res) == 1) {
                        // user successfully logged in
                        // Store user details in SQLite Database
                        DatabaseHandlerEmployer dbe = new DatabaseHandlerEmployer(
                                getApplicationContext());
                        JSONObject json_user = json
                                .getJSONObject("user");

                        // Clear all previous data in database
                        employerFunctions
                                .logoutUser(getApplicationContext());
                        dbe.addUser(
                                json_user.getString(KEY_NAME),
                                //json_user.getString(KEY_CNAME),
                                json_user.getString(KEY_EMAIL),
                                json.getString(KEY_UID),
                                json_user.getString(KEY_CREATED_AT));
                        // Launch Employer homePage Screen
                        Intent homepage = new Intent(
                                getApplicationContext(),
                                HomepageEmployerActivity.class);

                        // Close all views before launching Employer
                        // homePage
                        homepage.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                        startActivity(homepage);

                        // Close Login Screen
                        finish();
                    } else {
                        // Error in login
                        loginErrorMsg
                                .setText("Invalid username/password");
                    }
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    });
    return null;
}

// After completing background task Dismiss the progress dialog
protected void onPostExecute(String file_url) {
    // dismiss the dialog once done
    pDialog.dismiss();
}
}
}

public class LoginEmployerActivity extends Activity {
Button btnLoginEmployer;
Button btnLinkToEmployerRegisterScreen;
EditText inputEmail;
EditText inputPassword;
TextView loginErrorMsg;
TextView forgotPassword;

// JSON Response node names
private static String KEY_SUCCESS = "success";
private static String KEY_ERROR = "error";
private static String KEY_ERROR_MSG = "error_msg";
private static String KEY_UID = "uid";
private static String KEY_NAME = "name";
private static String KEY_CNAME = "cname";
private static String KEY_EMAIL = "email";
private static String KEY_CREATED_AT = "created_at";
private ProgressDialog pDialog;

boolean loginVerify= false;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.login_employer);

    // Importing all assets like buttons, text fields
    inputEmail = (EditText) findViewById(R.id.loginEmployerEmail);
    inputPassword = (EditText) findViewById(R.id.loginEmployerPassword);
    btnLoginEmployer = (Button) findViewById(R.id.btnLoginEmployer);
    btnLinkToEmployerRegisterScreen = (Button) findViewById(R.id.btnLinkToEmployerRegisterScreen);
    loginErrorMsg = (TextView) findViewById(R.id.login_error);
    forgotPassword = (TextView) findViewById(R.id.link_to_forgetPassword);

    // Login button Click Event
    btnLoginEmployer.setOnClickListener(new View.OnClickListener() {

        public void onClick(View view) {
            // Checking for server respond
                new LoginEmployer().execute();
            }
        }
    });

    // Link to Register Screen
    btnLinkToEmployerRegisterScreen
            .setOnClickListener(new View.OnClickListener() {

                public void onClick(View view) {
                    Intent i = new Intent(getApplicationContext(),
                            RegisterEmployerActivity.class);
                    startActivity(i);
                    finish();
                }
            });

    // Link to forgot password link
    forgotPassword.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            // Switching to forgot password screen
            Intent i = new Intent(getApplicationContext(),
                    ForgotPasswordEmployerActivity.class);
            startActivity(i);
        }
    });
}

// Background ASYNC Task to login by making HTTP Request
class LoginEmployer extends AsyncTask<String, String, String> {

    // Before starting background thread Show Progress Dialog
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(LoginEmployerActivity.this);
        pDialog.setMessage("Authenticating...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(false);
        pDialog.show();
    }

    // Checking login in background
    protected String doInBackground(String... params) {
        runOnUiThread(new Runnable() {
            public void run() {

                String email = inputEmail.getText().toString();
                String password = inputPassword.getText().toString();
                EmployerFunctions employerFunctions = new EmployerFunctions();
                JSONObject json = employerFunctions.loginUser(email,
                        password);

                // check for login response
                try {
                    if (json.getString(KEY_SUCCESS) != null) {
                        loginErrorMsg.setText("");
                        String res = json.getString(KEY_SUCCESS);
                        if (Integer.parseInt(res) == 1) {
                            loginVerify = true;
                            // user successfully logged in
                            // Store user details in SQLite Database
                            DatabaseHandlerEmployer dbe = new DatabaseHandlerEmployer(
                                    getApplicationContext());
                            JSONObject json_user = json
                                    .getJSONObject("user");

                            // Clear all previous data in database
                            employerFunctions
                                    .logoutUser(getApplicationContext());
                            dbe.addUser(
                                    json_user.getString(KEY_NAME),
                                    json_user.getString(KEY_CNAME),
                                    json_user.getString(KEY_EMAIL),
                                    json.getString(KEY_UID),
                                    json_user.getString(KEY_CREATED_AT));

                        } else {
                            // Error in login
                            loginErrorMsg
                                    .setText("Invalid username/password");
                        }
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        });
        return null;
    }

    // After completing background task Dismiss the progress dialog
    protected void onPostExecute(String file_url) {
        // dismiss the dialog once done
        pDialog.dismiss();
        if ( loginVerify == true )
        {
        // Launch Employer homePage Screen
        Intent homepage = new Intent(getApplicationContext(),
                HomepageEmployerActivity.class);

        // Close all views before launching Employer
        // homePage
        homepage.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(homepage);

        // Close Login Screen
        finish();
        }
    }
}

if(loginVerifed == true)
{
       Intent homepage = new Intent(getApplicationContext(),HomepageEmployerActivity.class
       homepage.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
       startActivity(homepage);
       finish();
}

protected void onPostExecute(String file_url) {

    // dismiss the dialog once done             // Intent Code Missing.

    pDialog.dismiss();

Intent homepage = new Intent( getApplicationContext(), HomepageEmployerActivity.class);
homepage.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(homepage);

// Background ASYNC Task to login by making HTTP Request
class LoginEmployer extends AsyncTask<String, String, String> {

boolean validUser = false;

if (Integer.parseInt(res) == 1) {
      // user successfully logged in
      // Store user details in SQLite Database

     validUser = true;  //set valid to true

protected void onPostExecute(String file_url) {
    // dismiss the dialog once done
    pDialog.dismiss();
    if ( validUser )
    {
        Intent homepage = new Intent( LoginEmployerActivity.this,
        HomepageEmployerActivity.class);

        // Close all views before launching Employer
        // homePage
         homepage.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
         startActivity(homepage);
    }