Comment extraire des données à partir de mysql et stocker dans la base de données Sqlite dans android

Question

Je développe une application Android dans laquelle j'ai besoin d'extraire des données qui sont stockées dans la base de données mysql sur le serveur. Récupérer des données depuis mysql et afficher sur android est facile et je l'ai fait sans aucun problème. Mais je ne sais pas comment récupérer les données mysql et les stocker dans la base de données sqlite pour les afficher en mode tableau. Ceci est mon code pour mysql à android. s'il vous plaît aidez-moi comment récupérer les données de mysql et stocker dans sqlite.

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 

import org.apache.http.HttpResponse; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.app.Activity; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.view.Menu; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.Toast; 

public class MainActivity extends Activity 
{ 
    private String jsonResult; 
    private String url = "http://10.0.2.2/database/menu_details.php"; 
    private ListView listView; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     listView = (ListView) findViewById(R.id.listView1); 
     accessWebService(); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 

     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

    // Async Task to access the web 
    private class JsonReadTask extends AsyncTask<String, Void, String> { 
     @Override 
     protected String doInBackground(String... params) { 
      HttpClient httpclient = new DefaultHttpClient(); 
      HttpPost httppost = new HttpPost(params[0]); 
      try { 
       HttpResponse response = httpclient.execute(httppost); 
       jsonResult = inputStreamToString(
         response.getEntity().getContent()).toString(); 
      } 

      catch (ClientProtocolException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
      return null; 
     } 

     private StringBuilder inputStreamToString(InputStream is) { 
      String rLine = ""; 
      StringBuilder answer = new StringBuilder(); 
      BufferedReader rd = new BufferedReader(new InputStreamReader(is)); 

      try { 
       while ((rLine = rd.readLine()) != null) { 
        answer.append(rLine); 
       } 
      } 

      catch (IOException e) { 
       // e.printStackTrace(); 
       Toast.makeText(getApplicationContext(), 
         "Error..." + e.toString(), Toast.LENGTH_LONG).show(); 
      } 
      return answer; 
     } 

     @Override 
     protected void onPostExecute(String result) { 
      ListDrwaer(); 
     } 
    }// end async task 

    public void accessWebService() { 
     JsonReadTask task = new JsonReadTask(); 
     // passes values for the urls string array 
     task.execute(new String[] { url }); 
    } 

    // build hash set for list view 
    public void ListDrwaer() { 
     List<Map<String, String>> menuList = new ArrayList<Map<String, String>>(); 

     try { 
      JSONObject jsonResponse = new JSONObject(jsonResult); 
      JSONArray jsonMainNode = jsonResponse.optJSONArray("menu"); 

      for (int i = 0; i < jsonMainNode.length(); i++) { 
       JSONObject jsonChildNode = jsonMainNode.getJSONObject(i); 
       String name = jsonChildNode.optString("name"); 
       String id = jsonChildNode.optString("id"); 
       String outPut = name + "-" + id; 
       menuList.add(createMenu("Menu", outPut)); 
      } 
     } 
     catch (JSONException e) 
     { 
      Toast.makeText(getApplicationContext(), "Error" + e.toString(),Toast.LENGTH_SHORT).show(); 
     } 

     SimpleAdapter simpleAdapter = new SimpleAdapter(this, menuList,android.R.layout.simple_list_item_1, 
       new String[] { "Menu" }, new int[] { android.R.id.text1 }); 
     listView.setAdapter(simpleAdapter); 
    } 

    private HashMap<String, String> createMenu(String name, String number) { 
     HashMap<String, String> menuID = new HashMap<String, String>(); 
     menuID.put(name, number); 
     return menuID; 
    } 
} 

Answer 1

Follow the steps. 

**1. Create table in database handler** 

**2. create method in databse handler** 
For example:- 



` public void addUser(String name, String email,String userage) 
{ 
     SQLiteDatabase db = this.getWritableDatabase(); 
     ContentValues values = new ContentValues(); 
     values.put(KEY_NAME, name); // Name 
     values.put(KEY_EMAIL, email); // Email 
}` 



**3. you need to create hashmap and other things in database handler** 

**4. Userfunction- create same name method in userfunction with params** 

then in main activity call the method using json. example 


    ` UserFunctions userFunction = new UserFunctions(); 
       Log.d("Button", "Login"); 
       JSONObject json = userFunction.loginUser(email, password);` 

Answer 2

Voici comment vous devriez le faire:

classe Activité:

private void registerUser(final String name, final String email, final String password) { 

     StringRequest strReq = new StringRequest(Request.Method.POST, 
       AppConfig.URL_INSERT_REGISTER, new Response.Listener<String>() { 

      @Override 
      public void onResponse(String response) { 
       Log.d(TAG, "Register Response: " + response.toString()); 
       hideDialog(); 

       try { 
        ServiceController iia = new ServiceController(getApplicationContext()); 

        if (iia.isInternetAvailable()) { 
         JSONObject jObj = new JSONObject(response); 
         boolean error = jObj.getBoolean("error"); 
         if (!error) { 
          String uid = jObj.getString("uid"); 
          JSONObject user = jObj.getJSONObject("user"); 
          String name = user.getString("name"); 
          String email = user.getString("email"); 

          //The line below performs the insert to the sqllite database. 
          db.addUser(name, email, uid); 
         } 
        } 
       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 

      } 
     }, new Response.ErrorListener() { 

      @Override 
      public void onErrorResponse(VolleyError error) { 
       Log.e(TAG, "Registration Error: " + error.getMessage()); 
      } 
     }) { 

      @Override 
      protected Map<String, String> getParams() { 
       Map<String, String> params = new HashMap<String, String>(); 
       params.put("name", name); 
       params.put("email", email); 
       params.put("password", password); 

       return params; 
      } 

     }; 

     AppController.getInstance().addToRequestQueue(strReq, tag_string_req); 
    } 

Dans la classe de création de base de données, vous devez ajouter la méthode suivante:

public void addUser(String name, String email, String uid) { 
    SQLiteDatabase db = this.getWritableDatabase(); 

    ContentValues params = new ContentValues(); 
    params.put(KEY_NAME, name); 
    params.put(KEY_EMAIL, email); 
    params.put(KEY_UID, uid); 

    long id = db.insert(TABLE_USER, null, params); 
    db.close(); 

    Log.d(TAG, "New record inserted in table user: " + id); 
} 

Espérons que cela aide :)