More than one table in SQLite database in android?
I am facing problem in creating more than one tables in sqllite database in android. Here is my code
public class DataHelper {
private static final String DATABASE_NAME = "example.db";
private static final int DATABASE_VERSION = 1;
private static final String TABLE_NAME = "table1";
private static final String SETTING_TABLE="setting";
private Context context;
private SQLiteDatabase db;
private SQLiteStatement insertStmt;
private static final String INSERT = "insert into " + TABLE_NAME +
"(name) values (?)";
private static final String INSERTSETTING = "insert into " + SETTING_TABLE +
"(name) values (?)";
public DataHelper(Context context) {
this.context = context;
OpenHelper openHelper = new OpenHelper(this.context);
this.db = openHelper.getWritableDatabase();
this.insertStmt = this.db.compileStatement(INSERT);
this.insertStmt = this.db.compileStatement(INSERTSETTING);
}
public SQLiteDatabase getDb() {
return this.db;
}
public long insert(String name) {
this.insertStmt.bindString(1, name);
return this.insertStmt.executeInsert();
}
private static class OpenHelper extends SQLiteOpenHelper {
OpenHelper(Context context) {
super(context, DATABASE_NAME, null, DATABAS开发者_开发问答E_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + TABLE_NAME +
" (id INTEGER PRIMARY KEY, name TEXT)");
db.execSQL("CREATE TABLE " + SETTING_TABLE +
" (id INTEGER PRIMARY KEY, name TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
onCreate(db);
}
}
}
Increase the value of DATABASE_VERSION, otherwise onUpgrade won't get called.
I notice you don't drop the SETTING_TABLE in onUpgade, and you're losing the first insert statement at the top of your code, as you replace INSERT with INSERTSETTING.
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