utilisation des intents en android
Bonjour, j'ai des difficultés à gérer deux activity en android. je veux faire une recherche dynamique par le nom dans une base de donée, je veux saisir dans l'edittext de la premiere acticity qui est la suivante:
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| <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/edittext"
android:layout_width="299dp"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_marginTop="42dp"
android:label="Nom :" />
<Button
android:id="@+id/recherch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Rechercher"
android:layout_below="@+id/edittext"
android:layout_alignEnd="@+id/edittext"
android:layout_alignParentStart="true" />
</RelativeLayout> |
la classe java associée est:
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| public class Recherche extends Activity {
EditText editTex;
String value;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.recherche);
Button buton= (Button) findViewById(R.id.recherch) ;
editTex=(EditText) findViewById(R.id.edittext) ;
value=String.valueOf(editTex.getText());
buton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(Recherche.this, MainActivity.class);
intent.putExtra("edit",value);
startActivity(intent);
finish();
}
});
}
} |
et recuperer dans la la seconde activité qui a pour classe java associée
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| package com.example.ouste4863.jsonsuite;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;
import android.widget.TextView;
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.JSONObject;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
/*int id= (int) jArray.getJSONObject();
String nom= (String) jArray.get(2);
String type= (String) jArray.get(3);
double prix= (double) jArray.get(4);*/
TextView ident= null;
TextView name= null;
TextView types= null;
TextView pri= null;
EditText editext;
static String marque;
// ident.setText(String.valueOf(id));name.setText(nom);types.setText(type);pri.setText(String.valueOf(prix));*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
types= (TextView) findViewById(R.id.type);
name=(TextView) findViewById(R.id.nom);
pri=(TextView) findViewById(R.id.Prix);
ident=(TextView) findViewById(R.id.identifiant);
Intent inte =getIntent();
marque=inte.getStringExtra("edit");
new Charge().execute();
}
public class Charge extends AsyncTask<String, String, String>{
InputStream is = null; String result = ""; String error_text=""; JSONObject j = null;
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(String... urls) {
try {
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
// nameValuePairs.add(new BasicNameValuePair("name","Apple"));
nameValuePairs.add(new BasicNameValuePair("name",marque));
// Envoie de la commande http
HttpResponse response=null;
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.43.218/android/fichier.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
//InputStream input = new BufferedInputStream(url.openStream(), 8192);
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
//while ((count = input.read(data)) != -1) {
}
is.close();
result=sb.toString();
}catch(Exception e){
Log.e("log_tag", "Error in http connection " + e);
}
} catch (Exception e) {
// TODO: handle exception
}
return result;
}
@Override
protected void onPostExecute(String result) {
try{
String ch="";
//dismissDialog(progress_bar_type);
Log.e("log_tag 1", "retourn Affiche " + result );
if(!result.equals("")) {
JSONArray jArray = new JSONArray(result);
for (int i = 0; i < jArray.length(); i++) {
JSONObject json_data = jArray.getJSONObject(i);
Log.i("log_tag 2","id: "+json_data.getString("ID")+
", name: "+json_data.getString("NAME")+
", type: "+json_data.getString("TYPE")+
", price: "+json_data.getString("PRICE")
);
types.setText( " type: "+json_data.getString("TYPE"));
pri.setText("price: "+json_data.getString("PRICE"));
ident.setText("id: "+json_data.getString("ID"));
name.setText( "name: "+json_data.getString("NAME"));
}
}
}catch(Exception e){
Log.e("log_tag", "Error parsing data " + e.toString());
}
}
}
} |
je parviens à faire le run mais l'appli s'arrete dès que je clique sur le bouton de l'activity recherche je ne sais pas si c'est qui ne marche pas.....aidez moi svp
