java在Android中显示Mysql数据

Question

我正在Android Studio中开发一个应用程序，我将使用基于PHP和Mysql的web系统的注册数据。我可以连接下面的代码，我还可以通过应用程序直接注册，但是如何使用PHP和Mysql将数据导入Android

连接代码

package br.com.perttutigestao.acessosistema;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;

public class Conexao {

    public static String postDados(String urlUsuario, String parametrosUsuarios){

        URL url;
        HttpURLConnection connection = null;

        try{

           url = new URL(urlUsuario);

           connection = (HttpURLConnection) url.openConnection();

           connection.setRequestMethod("POST");
           connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
           connection.setRequestProperty("Content-Lenght","" + Integer.toString(parametrosUsuarios.getBytes().length));
           connection.setRequestProperty("Content-Language","pt-BR");
           connection.setUseCaches(false);
           connection.setDoInput(true);
           connection.setDoOutput(true);         

            OutputStreamWriter outputStreamWriter = new OutputStreamWriter(connection.getOutputStream(),"UTF-8");
            outputStreamWriter.write(parametrosUsuarios);
            outputStreamWriter.flush();

           InputStream inputStream = connection.getInputStream();

           BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
           String linha;
           StringBuffer resposta = new StringBuffer();

           while ((linha = bufferedReader.readLine()) != null){
                resposta.append(linha);
                resposta.append('\r');
           }

           bufferedReader.close();

           return resposta.toString();

        }catch (Exception erro){

            return null;
        }finally {

            if(connection != null){
                connection.disconnect();
            }
        }
    }
}

PHP

<?php
$conexao = mysqli_connect('localhost','root','success','projeto');

$sql = mysqli_query($conexao,"SELECT * FROM pe_mobile");

while($jm = mysqli_fetch_array($sql)){
       $mostrar[] = $jm["Email"];
       $mostrar[] =  $jm["Senha"];
}

echo json_encode($mostrar);

我开始用Android开发，但我对Java没有太多经验

Answer 1

您可以尝试使用Asynctask从web获取数据