Comment faire un post HTTP dans Android?

je suis nouveau sur android app développement, ce dont j'ai besoin c'est que j'ai deux zone de texte nom d'utilisateur et mot de passe,il sera publier sur le serveur et vérifier avec la DB à l'aide d'une page php, si la connexion succès puis passez à l'écran suivant, sinon afficher un message indiquant erreur de connexion comment puis-je le faire?

public void postData() {
    //Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://google.com");
    EditText tw =(EditText) findViewById(R.id.EditText01);
    try {
        //Add your data
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("id", "12345"));
        nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        //Execute HTTP Post Request
        HttpResponse response = httpclient.execute(httppost);
        int status = response.getStatusLine().getStatusCode();

        tw.setText(status);
    } catch (ClientProtocolException e) {
        tw.setText(e.toString());
    } catch (IOException e) {
        tw.setText(e.toString());
    }
}

source d'informationauteur Alex Mathew

  1. 33

    L'utilisation de cette classe:

    import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class HttpLogin extends Activity {
/** Called when the activity is first created. */
private Button login;
private EditText username, password;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
login = (Button) findViewById(R.id.login);
username = (EditText) findViewById(R.id.username);
password = (EditText) findViewById(R.id.password);
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String   mUsername = username.getText().toString();
String  mPassword = password.getText().toString();
tryLogin(mUsername, mPassword);
}
});
}
protected void tryLogin(String mUsername, String mPassword)
{           
HttpURLConnection connection;
OutputStreamWriter request = null;
URL url = null;   
String response = null;         
String parameters = "username="+mUsername+"&password="+mPassword;   
try
{
url = new URL("your login URL");
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestMethod("POST");    
request = new OutputStreamWriter(connection.getOutputStream());
request.write(parameters);
request.flush();
request.close();            
String line = "";               
InputStreamReader isr = new InputStreamReader(connection.getInputStream());
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
//Response from server after login process will be stored in response variable.                
response = sb.toString();
//You can perform UI operations here
Toast.makeText(this,"Message from Server: \n"+ response, 0).show();             
isr.close();
reader.close();
}
catch(IOException e)
{
//Error
}
}
}

    main.xml sera comme ceci:

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText android:hint="Username" android:id="@+id/username" android:layout_width="fill_parent" android:layout_height="wrap_content"></EditText>
<EditText android:hint="Password" android:id="@+id/password" android:layout_width="fill_parent" android:layout_height="wrap_content" android:inputType="textPassword"></EditText>
<Button android:text="Sign In" android:id="@+id/login" android:layout_width="fill_parent" android:layout_height="wrap_content"></Button>
</LinearLayout>
  2. 1

    Vous pouvez utiliser HttpClient pour faire des requêtes POST. Voir un exemple ici.