populate listview à partir de la base de données d'une classe séparée

Question

J'ai du mal à trouver un moyen de remplir une vue de liste à partir d'une base de données.

voici mon code:

SQLDatabase.java

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 

public class SQLDatabase { 

    public static final String KEY_MOVENAME = "movename"; 
    public static final String KEY_MOVEID = "_moveid"; 
    public static final String KEY_MOVEDATE = "movedate"; 

    private static final String DATABASE_NAME = "mymovingfriend"; 
    private static final int DATABASE_VERSION = 1; 

    private static final String DATABASE_TABLE = "movingname"; 

    public static final String CREATE_TABLE = "CREATE TABLE " + DATABASE_TABLE + " (" + KEY_MOVEID + 
      " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_MOVEDATE + " TEXT NOT NULL, " + KEY_MOVENAME + " TEXT NOT NULL);"; 


    private DbHelper ourHelper; 
    private final Context ourContext; 
    private SQLiteDatabase ourDatabase; 

    private static class DbHelper extends SQLiteOpenHelper{ 

     public DbHelper(Context context) { 
      super(context, DATABASE_NAME, null, DATABASE_VERSION); 
      // TODO Auto-generated constructor stub 
     } 

     @Override 
     public void onCreate(SQLiteDatabase db) { 
      // TODO Auto-generated method stub 
      db.execSQL(CREATE_TABLE); 
     } 

     @Override 
     public void onUpgrade(SQLiteDatabase db, int oldversion, int newversion) { 
      // TODO Auto-generated method stub 
      db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE); 
      onCreate(db); 
     } 
    } 

    public SQLDatabase(Context c){ 
     ourContext = c; 
    } 

    public SQLDatabase open() throws SQLException{ 
     ourHelper = new DbHelper(ourContext); 
     ourDatabase = ourHelper.getWritableDatabase(); 
     return this; 
    } 

    public void close(){ 
     ourHelper.close(); 
    } 

    public long createMove(String smovename){ 
     ContentValues cv = new ContentValues(); 
     cv.put(KEY_MOVENAME, smovename); 
     return ourDatabase.insert(DATABASE_TABLE, null, cv); 
    } 

    public String getMove(){ 
     String[] column = new String[]{KEY_MOVENAME}; 
     Cursor c = ourDatabase.query(DATABASE_TABLE, column, null, null, null, null, null); 
     String result = ""; 

     int iMove = c.getColumnIndex(KEY_MOVENAME); 

     for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { 
      result = result + c.getString(iMove) + "\n"; 
     } 
     c.close(); 
     return result; 
    } 

} 

et voici ma classe ListView, au fond c'est là ListView son une classe distincte de la base de données.

ListMovingNames.java

import android.app.ListActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.ListView; 

public class ListMovingNames extends ListActivity { 
    ListView MoveList; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.selectorcreatemove); 

     MoveList = (ListView) findViewById(R.id.lvMoveItems); 

    } 

    @Override 
    protected void onListItemClick(ListView l, View v, int position, long id) { 
     // TODO Auto-generated method stub 
     super.onListItemClick(l, v, position, id); 
    } 

} 

Ce que je veux faire est la vue de remplir la liste et effectuer une tâche spécifique lorsqu'un élément a été sélectionné dans la liste.

Answer 1

Utilisez CursorAdapter pour cela. Cliquez pour voir pour une utilisation CursorAdapter http://thinkandroid.wordpress.com/2010/01/09/simplecursoradapters-and-listviews/

Answer 2

ok, une approche consiste à définir la variable pour stocker les données de base de données et utiliser cette variable lors du remplissage de données à la liste view.Here je lis la base de données et stocker les Vaules dans d'autres variable.

   public List<App_List> getAppList(String appclass){ 
    List<App_List> App_ListView = new ArrayList<App_List>(); 
    String AppTable_Name="favorite_apps"; 
    String AppList_Query="SELECT * FROM " + AppTable_Name +" WHERE appclass = "+ "'"+appclass+"'"; 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor cursor = db.rawQuery(AppList_Query, null); 
    if (cursor.moveToFirst()){ 
     do{ 
      App_List mAppList = new App_List(); 
      if(cursor.getString(7).equalsIgnoreCase("local")){ 
       // if application is from local server also take the version 
       mAppList.setVersion(cursor.getString(0)); 
      } 
      mAppList.setApp_Name(cursor.getString(3)); 
      mAppList.setApp_Description(cursor.getString(4)); 
      mAppList.setApp_Link(cursor.getString(6)); 
      mAppList.setPlace(cursor.getString(7));//place is added here 
      mAppList.setApp_Pkg(cursor.getString(1)); 
      App_ListView.add(mAppList); 
      }while (cursor.moveToNext()); 
    } 
    db.close(); 
    return App_ListView; 

Ma classe qui stocke la valeur

 public class App_List { 
private String App_Name; 
private String App_Description; 
private String App_Link; 
private String App_Pkg; 
public String getPlace() { 
    return place; 
} 
public void setPlace(String place) { 
    this.place = place; 
} 
private String Version; 
private String place; 

public String getVersion() { 
    return Version; 
} 
public void setVersion(String version) { 
    Version = version; 
} 
public String getApp_Name() { 
    return App_Name; 
} 
public void setApp_Name(String app_Name) { 
    App_Name = app_Name; 
} 
public String getApp_Description() { 
    return App_Description; 
} 
public void setApp_Description(String app_Description) { 
    App_Description = app_Description; 
} 
public String getApp_Link() { 
    return App_Link; 
} 
public void setApp_Link(String app_Link) { 
    App_Link = app_Link; 
} 
public String getApp_Pkg() { 
    return App_Pkg; 
} 
public void setApp_Pkg(String app_Pkg) { 
    App_Pkg = app_Pkg; 
} 

ici je suis peuplant les données à la liste vue

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    // TODO Auto-generated method stub 
    View mView=convertView; 
    if (convertView == null) 
    mView = inflater.inflate(R.layout.app_adapter, parent,false); 
    App_List mAppList= mList.get(position); 
    ((TextView) mView.findViewById(R.id.textView_appName)).setText(mAppList.getApp_Name()); 
    ((TextView) mView.findViewById(R.id.textView_appDescription)).setText(mAppList.getApp_Description());