Passer d'une vue à une autre

Version imprimable

1 pièce(s) jointe(s)

Bonsoir,

J'ai établi la connexion entre mon application android et ma BDD mysql via un script php. Par la suite j'ai essayé de passer de cette première vue d'authentification à une deuxième vue qui va afficher les informations personnelles de l'utilisateur connecté en les récupérant de la BDD.

Toutefois, après avoir confirmé l'exactitude du login et du mot de passe saisis, l'émulateur m'affiche dans la deuxième vue l'url vers mon script php et non pas les informations demandées :(

Ci-dessous mon code:
Activity principale:

Code:

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package com.test.log2;
 
import java.util.ArrayList;
 
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
 
import android.R.string;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
 
public class Login2Activity extends Activity {
 
	EditText un,pw;
	TextView error;
    Button ok;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        un=(EditText)findViewById(R.id.edittext_un);
        pw=(EditText)findViewById(R.id.edittext_pw);
        ok=(Button)findViewById(R.id.button_login);
        error=(TextView)findViewById(R.id.textview_error);
 
        ok.setOnClickListener(new View.OnClickListener() {
 
            public void onClick(View v) {
 
            	ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
            	postParameters.add(new BasicNameValuePair("username", un.getText().toString()));
            	postParameters.add(new BasicNameValuePair("password", pw.getText().toString()));
            	//String valid = "1";
            	String response = null;
            	try {
            	    response = httpclient.executeHttpPost("http://10.0.2.2/mesRequetes/log.php", postParameters);
            	    String res=response.toString();
            	   // res = res.trim();
            	    res= res.replaceAll("\\s+","");         	              	 
            	    //error.setText(res);
 
            	    if(res.equals("1"))
            	    {
            	        error.setText("Correct Username and Password");
            	        Intent intent = new Intent(Login2Activity.this,                           DonneesPersonnelles.class);
            	        startActivity(intent);
            	    }
            	    else
            	       error.setText("Sorry!! Incorrect Username or Password");
            	} catch (Exception e) {
            		un.setText(e.toString());
            	}
 
            }
        });
    }   
}

hpptclient.java

Code:

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package com.test.log2;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
 
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
 
public class httpclient {
    public static final int HTTP_TIMEOUT = 30 * 1000; // milliseconds
    private static HttpClient mHttpClient;
 
    private static HttpClient getHttpClient() {
        if (mHttpClient == null) {
            mHttpClient = new DefaultHttpClient();
            final HttpParams params = mHttpClient.getParams();
            HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT);
            HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT);
            ConnManagerParams.setTimeout(params, HTTP_TIMEOUT);
        }
        return mHttpClient;
    }
 
 
    public static String executeHttpPost(String url, ArrayList<NameValuePair> postParameters) throws Exception {
        BufferedReader in = null;
        try {
            HttpClient client = getHttpClient();
            HttpPost request = new HttpPost(url);
            UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
            request.setEntity(formEntity);
            HttpResponse response = client.execute(request);
            in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
 
            StringBuffer sb = new StringBuffer("");
            String line = "";
            String NL = System.getProperty("line.separator");
            while ((line = in.readLine()) != null) {
                sb.append(line + NL);
            }
            in.close();
 
            String result = sb.toString();
            return result;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
 
    public static String executeHttpGet(String url) throws Exception {
        BufferedReader in = null;
        try {
            HttpClient client = getHttpClient();
            HttpGet request = new HttpGet();
            request.setURI(new URI(url));
            HttpResponse response = client.execute(request);
            in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
 
            StringBuffer sb = new StringBuffer("");
            String line = "";
            String NL = System.getProperty("line.separator");
            while ((line = in.readLine()) != null) {
                sb.append(line + NL);
            }
            in.close();
 
            String result = sb.toString();
            return result;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

Deuxième vue:

Code:

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package com.test.log2;
 
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
 
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
 
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;
 
public class DonneesPersonnelles extends Activity {
	TextView txt;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		LinearLayout rootLayout = new LinearLayout(getApplicationContext());  
		txt = new TextView(getApplicationContext());  
		rootLayout.addView(txt);  
		setContentView(rootLayout);  
 
		// DÃ©finir le texte et appeler la fonction de connexion.  
		txt.setText("Connexion..."); 
		// Appeler la mÃ©thode pour rÃ©cupÃ©rer les donnÃ©es JSON
		txt.setText(getServerData(strURL)); 
	}
 
	public static final String strURL = "http://10.0.2.2/mesRequetes/donnees.php";
 
	private String getServerData(String returnString) {
		InputStream is = null;
		String result = "";
 
		ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
		nameValuePairs.add(new BasicNameValuePair("username","password"));
 
		// Envoie de la commande http
		try{
			HttpClient httpclient = new DefaultHttpClient();
			HttpPost httppost = new HttpPost(strURL);
			httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
			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());
		}
 
		// Convertion de la requÃªte en string
		try{
			BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
			StringBuilder sb = new StringBuilder();
			String line = null;
			while ((line = reader.readLine()) != null) {
				sb.append(line + "\n");
			}
			is.close();
			result=sb.toString();
		}catch(Exception e){
			Log.e("log_tag", "Error converting result " + e.toString());
		}
		// Parse les donnÃ©es JSON
		try{
			JSONArray jArray = new JSONArray(result);
			for(int i=0;i<jArray.length();i++){
				JSONObject json_data = jArray.getJSONObject(i);
				// Affichage ID_ville et Nom_ville dans le LogCat
				Log.i("log_tag","username: "+json_data.getInt("username")+
						", password: "+json_data.getString("password")
				);
				// RÃ©sultats de la requÃªte
				returnString += "\n\t" + jArray.getJSONObject(i); 
			}
		}catch(JSONException e){
			Log.e("log_tag", "Error parsing data " + e.toString());
		}
		return returnString; 
	}
}

Résultat:
Pièce jointe 91062

Veuillez m'aider à trouver d'où vient l'erreur

Merci d'avance

Pour récupérer ton username et ton password tu devrais avoir un truc du style
Code:

1 2 3 returnString+=json_data.getInt("username"); returnString+=json_data.getString("password");
Ton log :
Code:

1 2 3 Log.i("log_tag","username: "+json_data.getInt("username")+ ", password: "+json_data.getString("password") );
Renvoi bien quelque chose ?

passer d'une view à une autre

Bonjour,

Merci pour votre réponse.

En fait, j'ai découvert qu'il y a des erreurs au niveau de mon code.

Voilà ma version actuelle:

Code:

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<?php
  mysql_connect("localhost","root","");
  mysql_select_db("ayda2");
  $sql=mysql_query("SELECT * FROM candidat WHERE id_can like '".$_REQUEST['identifiant']."%'");
  while($row=mysql_fetch_assoc($sql))
  $output[]=$row;
  print(json_encode($output));
  mysql_close();
?>

Code:

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package com.test.log2;
 
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
 
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
 
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;
 
public class DonneesPersonnelles extends Activity {
	TextView txt;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		LinearLayout rootLayout = new LinearLayout(getApplicationContext());  
		txt = new TextView(getApplicationContext());  
		rootLayout.addView(txt);  
		setContentView(rootLayout);  
 
		// DÃ©finir le texte et appeler la fonction de connexion.  
		txt.setText("Connexion..."); 
		// Appeler la mÃ©thode pour rÃ©cupÃ©rer les donnÃ©es JSON
		txt.setText(getServerData(strURL)); 
	}
 
	public static final String strURL = "http://10.0.2.2/mesRequetes/donnees.php";
 
	private String getServerData(String returnString) {
		InputStream is = null;
		String result = "";
 
		ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
		nameValuePairs.add(new BasicNameValuePair("identifiant", "9090909"));
 
		// Envoie de la commande http
		try{
			HttpClient httpclient = new DefaultHttpClient();
			HttpPost httppost = new HttpPost(strURL);
			httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
			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());
		}
 
		// Convertion de la requÃªte en string
		try{
			BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
			StringBuilder sb = new StringBuilder();
			String line = null;
			while ((line = reader.readLine()) != null) {
				sb.append(line + "\n");
			}
			is.close();
			result=sb.toString();
		}catch(Exception e){
			Log.e("log_tag", "Error converting result " + e.toString());
		}
		// Parse les donnÃ©es JSON
		try{
			JSONArray jArray = new JSONArray(result);
			for(int i=0;i<jArray.length();i++){
				JSONObject json_data = jArray.getJSONObject(i);
				Log.i("log_tag","id_can: "+json_data.getInt("id_can"));
				// RÃ©sultats de la requÃªte
				returnString += "\n\t" + jArray.getJSONObject(i); 
			}
		}catch(JSONException e){
			Log.e("log_tag", "Error parsing data " + e.toString());
		}
		return returnString; 
	}
}

Maintenant, après mon identification, l'émulateur m'affiche dans la deuxième view les informations relatives à l'utilisateur dont l'identifiant est 9090909. J'ai testé avec les différents logins et mots de passe que 'ai dans la base, mais le résultat est toujours le même.

09/03/2012, 13h45
nicroman
Pourrais tu nous montrer le code en question ?

(le code du précédent message ne récupère aucun login/password, il passe juste nameValuePairs.add(new BasicNameValuePair("identifiant", "9090909")); donc du coup le php ne va renvoyer que ca).

D'autre part:
- L'application va crasher (avec un Non Responsive App) si le PHP prends trop de temps à répondre (problemes réseaux, problemes DB, problemes PHP), et elle va crasher à tous les cas sur un emulateur Android 3.0+ avec un "NetworkInMainThreadException": Tous les appels "lents" (exterieurs) doivent être fait dans un thread à part et non dans le "onCreate".
- Toute la partie de transformation de la réponse en JSONArray peut etre réduite à:
  Code:
  
  1 2 3 4 ... HttpResponse response = httpclient.execute(httppost); JSONArray jArray = new JSONArray(EntityUtils.toString(response.getEntity(),"ISO-8859-1"));

passer d'une view à une autre

En fait, j'ai modifié le code et voilà le nouveau:

première activity:

Code:

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package com.test.log2;
 
import java.util.ArrayList;
 
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
 
public class Login2Activity extends Activity {
 
	EditText un,pw;
	TextView error;
    Button ok;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        un=(EditText)findViewById(R.id.edittext_un);
        pw=(EditText)findViewById(R.id.edittext_pw);
        ok=(Button)findViewById(R.id.button_login);
        error=(TextView)findViewById(R.id.textview_error);
        ok.setOnClickListener(new View.OnClickListener() {
 
            public void onClick(View v) {
 
            	ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
            	postParameters.add(new BasicNameValuePair("username", un.getText().toString()));
            	postParameters.add(new BasicNameValuePair("password", pw.getText().toString()));
 
 
            	String response = null;
 
 
            	try {
            	    response = httpclient.executeHttpPost("http://10.0.2.2/mesRequetes/log.php", postParameters);
            	    String res=response.toString();
            	   // res = res.trim();
            	    res= res.replaceAll("\\s+","");         	              	 
            	    //error.setText(res);
 
            	    if(res.equals("1"))
            	    {
            	        error.setText("Correct Username and Password");
 
            	      //ton champ 
            	        EditText usern = (EditText) findViewById(R.id.edittext_un);
            	        // ta valeur
            	        String loginStr = usern.getText().toString();
            	        // ton champ
            	        EditText passw = (EditText) findViewById(R.id.edittext_pw);
            	        //ta valeur
            	        String passStr = passw.getText().toString();
 
            	        Intent intent = new Intent(Login2Activity.this,	DonneesPersonnelles.class);	
 
            	        //On rajoute les valeurs à l'Intent
            	        intent.putExtra("username", loginStr);
            	        intent.putExtra("password", passStr);
            	        startActivity(intent);
 
            	    }
            	    else
            	       error.setText("Sorry!! Incorrect Username or Password");
            	} catch (Exception e) {
            		un.setText(e.toString());
            	}
 
            }
        });
    } 
 
}

Deuxième activity:

Code:

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package com.test.log2;
 
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.test.log2.Login2Activity;
 
public class DonneesPersonnelles extends Activity {
	TextView txt;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		LinearLayout rootLayout = new LinearLayout(getApplicationContext());  
		txt = new TextView(getApplicationContext());  
		rootLayout.addView(txt);  
		setContentView(rootLayout);  
 
		txt.setText("Connexion..."); 
		txt.setText(getServerData(strURL)); 
 
	}
 
	public static final String strURL = "http://10.0.2.2/mesRequetes/donnees.php";
 
	private String getServerData(String returnString) {
		InputStream is = null;
		String result = "";
		Intent intent = getIntent();
		String usern = intent.getExtras().getString("username");
		String passw = intent.getExtras().getString("password");
 
 
		ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
		nameValuePairs.add(new BasicNameValuePair("username", usern));
		nameValuePairs.add(new BasicNameValuePair("password", passw));
 
 
 
 
		// Envoie de la commande http
		try{
			HttpClient httpclient = new DefaultHttpClient();
			HttpPost httppost = new HttpPost(strURL);
			httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
			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());
		}
 
		try{
			BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
			StringBuilder sb = new StringBuilder();
			String line = null;
			while ((line = reader.readLine()) != null) {
				sb.append(line + "\n");
			}
			is.close();
			result=sb.toString();
		}catch(Exception e){
			Log.e("log_tag", "Error converting result " + e.toString());
		}
		try{
			JSONArray jArray = new JSONArray(result);
			for(int i=0;i<jArray.length();i++){
				JSONObject json_data = jArray.getJSONObject(i);
				Log.i("log_tag","username: "+json_data.getString("username")+
						",password: "+json_data.getString("password"));
				returnString += "\n\t" + jArray.getJSONObject(i); 
			}
		}catch(JSONException e){
			Log.e("log_tag", "Error parsing data " + e.toString());
		}
		return returnString; 
	}
}

Suite à mon identification, l'émulateur m'affiche le même résultat (URL du fichier php) et le LogCat m'affiche ceci:

Code:

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03-10 20:49:15.487: W/KeyCharacterMap(200): No keyboard for id 0
03-10 20:49:15.557: W/KeyCharacterMap(200): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
03-10 20:49:23.007: D/dalvikvm(200): GC freed 3216 objects / 200360 bytes in 102ms
03-10 20:49:23.117: I/global(200): Default buffer size used in BufferedReader constructor. It would be better to be explicit if an 8k-char buffer is required.
03-10 20:49:23.587: E/log_tag(200): Error parsing data org.json.JSONException: A JSONArray text must start with '[' at character 1 of <br />
03-10 20:49:23.587: E/log_tag(200): <font size='1'><table class='xdebug-error' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
03-10 20:49:23.587: E/log_tag(200): <tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Notice: Undefined index: identifiant in C:\wamp\www\mesRequetes\donnees.php on line <i>4</i></th></tr>
03-10 20:49:23.587: E/log_tag(200): <tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
03-10 20:49:23.587: E/log_tag(200): <tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
03-10 20:49:23.587: E/log_tag(200): <tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0013</td><td bgcolor='#eeeeec' align='right'>366720</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='C:\wamp\www\mesRequetes\donnees.php' bgcolor='#eeeeec'>..\donnees.php<b>:</b>0</td></tr>
03-10 20:49:23.587: E/log_tag(200): </table></font>
03-10 20:49:23.587: E/log_tag(200): [{"id_can":"2020202","username":"alex","password":"1234567","Nom":"kef","Prenom":"Mirez","DNaiss":"1985-07-16","Diplome":"Genie civil"},{"id_can":"9090909","username":"lily","password":"azerty","Nom":"hani","Prenom":"lilia","DNaiss":"1987-11-09","Diplome":"informatique"},{"id_can":"998898989","username":"dadad","password":"010101","Nom":"hani","Prenom":"haifa","DNaiss":null,"Diplome":"Maintenance industrielle"}]

11/03/2012, 23h36
nicroman

Il semble que tu ais un probleme sur le PHP:

Notice: Undefined index: identifiant in C:\wamp\www\mesRequetes\donnees.php on line <i>4</i>

Au lieu de faire:
Log.e("log_tag", "Error converting result " + e.toString());

Fais plutot:
Log.e("log_tag", "Error converting result",e);

Ca aura l'interet d'afficher l'ensemble de la stacktrace au cas ou....
12/03/2012, 18h05
Feanorin

Bonjour,

Pour compléter les dires de nicroman

Code:

Error parsing data org.json.JSONException: A JSONArray text must start with '[' at character 1 of <br />

Ton texte récupérer ne commence pas par un [ mais par retour chariot, il faut que tu le corriges !