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android database: the method open() is undefined for the type databasehelper class


android database: the method open() is undefined for the type databasehelper class

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android database: the method open() is undefined for the type databasehelper class
Tag : android , By : Michael T.
Date : November 23 2020, 01:01 AM

I wish this helpful for you You no need to open database getWritableDatabse() method will open it.
so Remove this line
myDb.open();
SQLiteDatabase db = null;
SQLiteDatabase db = getWritableDatabse();
public static  String getCodeAndPassword(String ffCode)
public  String getCodeAndPassword(String ffCode)
String storedffcode=myDb.getCodeAndPassword(ffCode);
String storedffcode=Db_getUserDetail.getCodeAndPassword(ffCode);

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Android - Sqlite database method undefined fot type


Tag : java , By : Alex
Date : March 29 2020, 07:55 AM
hope this fix your issue I suggest you use the SQLiteOpenHelper.
It cares automatically to create a DB if it's not available...
 public class DatabaseHelper extends SQLiteOpenHelper {
     private static final int DB_VERSION = 1;
     private static final String DB_NAME = "myDB.db";

     public DatabaseHelper(Context ctx) {
         super(ctx, DB_NAME, null, DB_VERSION);
     }

     @Override
     public void onCreate(SQLiteDatabase db) {
         String query = "CREATE TABLE myTable(_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, age INTEGER NOT NULL)";
         db.execSQL(query);
         db.close();
     }

     @Override
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
         ...
     }
}
...
DatabaseHelper helper = new DatabaseHelper(context);
SQLiteDatabase db = helper.getWritableDatabase();
...
String query = "YOUR SQL STATEMENT";
db.execSQL(query);
db.close();

Android DatabaseHelper Error. Cursor doesn't open same table again


Tag : android , By : Brian Drum
Date : March 29 2020, 07:55 AM
Hope that helps Don't close the Cursor & DB object in getAllRectorValues & getAllStudentValues. res.close() will

Android SQLite DatabaseHelper unknown error (code 14): Could not open database


Tag : android , By : user179863
Date : March 29 2020, 07:55 AM
I wish this helpful for you There is no need to check if the database exists in onCreate(). You can assume that :
The database exists It is opened in read-write mode onConfigure() has been called You are in a transaction

Android database manager and inner DatabaseHelper class


Tag : android , By : lonehunter01
Date : March 29 2020, 07:55 AM

Android Studio E/dalvikvm﹕ Could not find class '.DatabaseHelper', referenced from method .DatabaseManager


Tag : android , By : m0gb0y74
Date : March 29 2020, 07:55 AM
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