Easy programing with the AppInventor and MySQL

In this paper I intend to teach to easy form to program the App Inventor. All text that soughtare very difficult and I decided to write this article easy to understand. This article shows how to use the app inventor along with MySQL.The program sends information such as key, data and get the result.

1)Button Enviar chave e dadosThe app sends information such as keys , data, and get the result. On the server

side a program called " cadastrar.php " takes the information and processes the data . Theprogram opens the database , deletes the record whose key is equal to sent and saves thenew key and the data. One result is stored in the text box Resultado " Cadastrado" .

2)Button Buscar ChaveThe app sends the key word opens the database, searches the registry and finding

shows the data in the text box “Resultado”. Server-side a so-called “pesquisa.php”program that does this search .

3)Text Box MensagemThis text box is updated in each five seconds and shows the registry key 10 to

simulate the reception continues for new messages . Enter a new value in the key 10 andit will appear in the text box. Server-side a so-called “pesquisa.php” program that does thissearch .

APP

PHP program

Cadastrar

<?php include "config.php";

$chave = trim($_POST['chave']);$dado = trim($_POST['dado']);

$query = "DELETE FROM App where Chave='$chave'" or die($msg[1]);$resultado = mysql_query($query);

$sql = mysql_query( "INSERT INTO App (Chave, Dado) VALUES ('$chave', '$dado')") or die( mysql_error() );

if ($sql=='1'){ echo 'Cadastrado'; }else{ echo $sql; }?>

Config.php

<?php define('BD_USER', 'argosmov_app');define('BD_PASS', '*******');define('BD_NAME', 'argosmov_loja'); mysql_connect('localhost', BD_USER, BD_PASS);mysql_select_db(BD_NAME) or die('Erro conexao');

?>

Pesquisar.php

<?php include "config.php";

$chave = trim($_POST['chave']);$dado=trim($_POST['dado']);$query = "SELECT Dado FROM App where Chave='$chave'" or die(mysql_error());$resultado = mysql_query($query);$linha = mysql_fetch_array($resultado);$dado=$linha['Dado'];echo $dado;?>

Database