Android-appsidan:
private ArrayList<String> receiveData(String file, ArrayList<NameValuePair> data)
{
InputStream is = null;
ArrayList<String> output = new ArrayList<String>();
String line = null;
//Connect and obtain data via HTTP.
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.blah.com/"+file);
httppost.setEntity(new UrlEncodedFormEntity(data));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}
catch(Exception e)
{
Log.e("log_tag", "Error in http connection "+e.toString());
}
//Parse data into ArrayList and return.
try
{
BufferedReader reader =
new BufferedReader(new InputStreamReader(is,"iso-8859-1"));
while ((line = reader.readLine()) != null)
{
//Parse data into tokens and removing unimportant tokens.
StringTokenizer st = new StringTokenizer(line, delims, false);
while(st.hasMoreTokens())
{
String token = st.nextToken();
output.add(token);
}
}
is.close();
//Log output of data in LogCat.
Log.d("DATA","DATA:"+output);
}
catch(Exception e)
{
Log.e("log_tag", "Error converting result "+e.toString());
}
return output;
}
/**
* Gets all data from GetAllData.php
* @return output - ArrayList containing data.
*/
public ArrayList<String> getAllData(String row)
{
fileName = "GetAllData.php";
//Add arguments to arrayList<NameValuePairs> so we can encode the data and send it on.
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("row", row));
ArrayList<String> output = this.receiveData(fileName, nameValuePairs);
return output;
}
Serversidan:
så då är filen GetAllData.php på servern:
<?php
/*
* What this file does is it:
* 1) Creates connection to database.
* 2) Gets data from database.
* 3) Encodes data to JSON. So this data can then be used by Android Application.
* 4) Close database connection.
*/
require_once $_SERVER['DOCUMENT_ROOT'].'/Clarity/Connection.php';
require_once $_SERVER['DOCUMENT_ROOT'].'/Clarity/ReceiveAPI.php';
$server = new Connection();
$receive = new ReceiveAPI();
//Retrieve information.
$row = $_POST['row'];
//Connect to database.
$server->connectDB();
$output = $receive->getAllData($row); //basically method to query database.
print(json_encode($output)); //output is result of the query given back to app.
//Disconnect from database.
$server->disconnectDB();
?>
Detta är ett exempel som jag använde nyligen. Bara att notera i php-filen. Jag importerar Connection.phpthis handlar bara om anslutningen till databasen. Så ersätt bara det med din kod för att ansluta till MYSQL db. Jag importerade också SendAPI.php (som du bara kan ignorera) Detta var bara min klass för att skicka data. I grund och botten innehöll den några av de frågor jag ville använda. Såsom sendAccelerationData(). I grund och botten liknade klassen den för lagrade procedurer.
Hur jag ansluter till databasen var i min Connection.php-klass.
//Connect to a database.
public function connectDB()
{
//Connect to SQL server.
$this->connection = mysql_connect($this->hostName,$this->user,$this->password);
if (!$this->connection)
{
die('Could not connect: ' . mysql_error());
}
//Print("Connected to MySQL. </br>");
//Select Database to query.
$db_selected = mysql_select_db($this->database);
if (!$db_selected)
{
die('Could not select database' . mysql_error());
}
//Print("Database \"$this->database\" selected. </br>");
}
//Disconnect from database.
public function disconnectDB()
{
mysql_close($this->connection);
}
}
Notera i felmeddelanden att jag skrev ut schema ut db såsom db-namn/tabellnamn. Det här var bara felsökning. Jag avråder från detta. DU VILL INTE visa den informationen för användaren.