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我想能夠使用列表視圖來過濾數據庫。我希望能夠使用editText並使用SQL Like運算符來過濾列表。我已創建一個數據庫輔助類...使用ListView和使用EditText過濾SQLite數據庫
package pkg.CookBook;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.content.Context;
public class DatabaseOpenHelper {
private static final String KEY_ROWID = "_id";
private static final String KEY_NAME = "Recipe_Name";
private static final String KEY_CATEGORY = "Recipe_Category";
private static final String KEY_DESCRIPTION = "Recipe_Description";
private static final String FOREIGN_ROWID2 = "Ing_Recipe_ID";
private static final String KEY_ROWID2 = "Ing_id";
private static final String KEY_NAME2 = "Ingredient_Name";
private static final String KEY_CATEGORY2 = "Ingredient_Category";
private static final String DATABASE_NAME = "database";
private static final String DATABASE_TABLE = "CBRecipeData";
private static final String DATABASE_TABLE2 = "CBIngredientData";
private final Context myContext;
private databaseHelper myHelper;
private SQLiteDatabase myDatabase;
public static class databaseHelper extends SQLiteOpenHelper{
public databaseHelper(Context context){
super(context, DATABASE_NAME, null,1);
}
// Database creation sql statement
/*private static final String DATABASE_CREATE = "create table CBRecipeData (recipe_id integer primary key autoincrement, "
+ "recipe category text not null, recipe name text not null, recipe description text not null);";
private static final String DATABASE_CREATE2 = "create table CBIngredientData (ing_recipe_id foreign key reference CBRecipeData recipe_id " + "integer ingredient_id integer primary key autoincrement, "
+ "recipe category text not null, recipe name text not null, recipe description text not null);";
*/
@Override
public void onCreate(SQLiteDatabase database) {
database.execSQL("Create Table"+ DATABASE_TABLE + " (" +
KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
KEY_NAME + " TEXT NOT NULL, " +
KEY_CATEGORY + " TEXT NOT NULL, " +
KEY_DESCRIPTION + "TEXT NOT NULL");
database.execSQL("Create Table"+ DATABASE_TABLE2 + " (" +
FOREIGN_ROWID2 + "foreign key reference CBRecipeData recipe_id, " +
KEY_ROWID2 + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
KEY_NAME2 + " TEXT NOT NULL, " +
KEY_CATEGORY2 + " TEXT NOT NULL");
}
@Override
public void onUpgrade(SQLiteDatabase database, int oldversion, int newVersion) {
database.execSQL("Drop Table If Exists " + DATABASE_TABLE);
onCreate(database);
}
}
public DatabaseOpenHelper(Context c){
myContext = c;
}
public DatabaseOpenHelper open(){
myHelper = new databaseHelper(myContext);
myDatabase = myHelper.getWritableDatabase();
return this;
}
public void close(){
myHelper.close();
}
public void createEntry(String Name, String Description, String Category){
}
}
....
我很困惑不過，我怎麼可以過濾數據庫以及如何實際在列表視圖中顯示這個..
String query = "SELECT _id, Recipe_Name "+
"FROM CBRecipeData "+
"WHERE Recipe_name Like %" + filterText.getText().toString() + "%" +
"ORDER BY Recipe_Name";
final Cursor c = dbHelper.getReadableDatabase().rawQuery(query, null);
我知道這就像我想實現的過濾器，但如何與列表視圖使用這個問題是問題..
任何指向正確的方向將是偉大的！ :) 謝謝stef