Android应用无法与MySQL数据库连接

Question

我有一个.sql数据库，我使用PHPmyadmin和一个Android应用程序编辑，该应用程序从数据库中检索登录凭据并尝试根据用户的凭据登录到应用程序。但它一直显示＆＃34;无法登录＆＃34;应用程序中的错误，即使我使用数据库中的正确凭据，在这种情况下是phoneno和密码。 Login_Activity.JAVA如下。为什么应用程序没有正确登录？

Login_Activity.java

package com.example.ankit.mrestro.Controller;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

import com.baidu.android.pushservice.PushConstants;
import com.baidu.android.pushservice.PushManager;
import com.squareup.otto.Subscribe;
import com.example.ankit.mrestro.Bus.BusProvider;
import com.example.ankit.mrestro.Bus.LoginEvent;
import com.example.ankit.mrestro.Bus.LoginSuccessEvent;
import com.example.ankit.mrestro.Bus.PushRegisterEvent;
import com.example.ankit.mrestro.R;
import com.example.ankit.mrestro.model.LoginResult;
import com.example.ankit.mrestro.services.DataService;
import com.example.ankit.mrestro.services.RESTrepository;

public class LoginActivity extends Activity {
    public static final String PREF_ACCOUNT_ID = "cust_id";
    public static final String PREF_TOKEN = "accessToken";
    public static final String SHARED_PREF_DB_NAME = "loginResult";
    private ProgressDialog progressDialog;

    public static Intent createIntent(Context c) {
        return new Intent(c, LoginActivity.class);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        DataService.init();
        progressDialog = new ProgressDialog(this);

        /**
         * Check either we are already logged in
         */
        SharedPreferences sharedPreferences = getSharedPreferences(SHARED_PREF_DB_NAME, 0);
        if (sharedPreferences.getString(PREF_TOKEN, "").length() != 0) {
            RESTrepository.setToken(sharedPreferences.getString(PREF_TOKEN, ""));
            RESTrepository.setUser_id(sharedPreferences.getInt(PREF_ACCOUNT_ID, 0));
            goToMainActivity();
        }

        setContentView(R.layout.activity_login);
        PushManager.startWork(getApplicationContext(), PushConstants.LOGIN_TYPE_API_KEY,
                "hwfeocSIPlgKTasIuARPREnS");
        //SharedPreferences preferences=getSharedPreferences("pushService",0);
        //String userId=preferences.getString("user_id","no data");
        //Toast.makeText(this,"user id is:"+userId,Toast.LENGTH_SHORT).show();
        Button loginButton=(Button)findViewById(R.id.email_sign_in_button);
        loginButton.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View v){
                String phoneno=((TextView)findViewById(R.id.email)).getText().toString();
                String password=((TextView)findViewById(R.id.password)).getText().toString();

                //      Toast.makeText(getBaseContext(),"login..."+phoneno+"..."+password,Toast.LENGTH_SHORT).show();
                progressDialog.show();
                BusProvider.get().post(new LoginEvent(phoneno,password));
            }
        });
    }

    @Override
    protected void onResume(){
        super.onResume();
        BusProvider.get().register(this);
    }

    @Override
    protected void onPause(){
        super.onPause();
        BusProvider.get().unregister(this);
    }

    @Subscribe
    public void onLoginSuccessEvent(LoginSuccessEvent loginSuccessEvent){
        progressDialog.hide();
        LoginResult result=loginSuccessEvent.getResult();
        if (result != null) {
            //  Toast.makeText(this,result.getCust_id()+result.getCust_name()+result.getCust_access_token(),Toast.LENGTH_SHORT).show();
            //Toast.makeText(this,"Login Success",Toast.LENGTH_SHORT).show();
            SharedPreferences preferences = this.getSharedPreferences(SHARED_PREF_DB_NAME, MODE_PRIVATE);
            preferences.edit().putString(PREF_TOKEN,result.getCust_access_token()).commit();
            preferences.edit().putInt(PREF_ACCOUNT_ID,result.getCust_id()).commit();
            SharedPreferences pushPreferences=this.getSharedPreferences("pushService",0);
            BusProvider.get().post(new PushRegisterEvent
                    (result.getCust_id(),result.getCust_access_token(),pushPreferences.getString("user_id","")));
            goToMainActivity();

        } else {
            Toast.makeText(this, "Unable to login, please retry", Toast.LENGTH_SHORT).show();
        }
    }

    private void goToMainActivity() {
        Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);
        finish();
    }
}