Question

before you ask I have looked around for a solution to my problem and I can’t work it out myself, hence coming to you guys.

THE PROBLEM

I have an uncaught exception problem with my cursor and I cannot work it out….

ERROR

09-04 15:48:38.863: I/dalvikvm(1421): Uncaught exception thrown by finalizer (will be discarded):
09-04 15:48:38.863: I/dalvikvm(1421): Ljava/lang/IllegalStateException;: Finalizing cursor android.database.sqlite.SQLiteCursor@44ef6598 on null that has not been deactivated or closed
09-04 15:48:38.863: I/dalvikvm(1421):   at android.database.sqlite.SQLiteCursor.finalize(SQLiteCursor.java:596)
09-04 15:48:38.873: I/dalvikvm(1421):   at dalvik.system.NativeStart.run(Native Method)

CODE THAT ITS COMPLAINING ABOUT

public CCTrackLocation getTrackLocationForID(int id) {
        CCTrackLocation trackLocation = new CCTrackLocation();

        String selectQuery = "SELECT * FROM "+TABLE_TRACK_LOCATION+" WHERE \"id\" = "+ String.valueOf(id);

        SQLiteDatabase db = this.getReadableDatabase();
        Cursor cursor = db.rawQuery(selectQuery,null);
        if (cursor.moveToFirst()) {
            do {
                trackLocation.setID(cursor.getInt(0));
                trackLocation.segmentID = cursor.getInt(1);
                trackLocation.timestamp = cursor.getDouble(2);
                trackLocation.latitude = cursor.getDouble(3);
                trackLocation.longitude = cursor.getDouble(4);
                trackLocation.altitude = cursor.getDouble(5);
                trackLocation.velocity = cursor.getDouble(6);
                trackLocation.heading = cursor.getDouble(7);
                trackLocation.haccuracy = cursor.getDouble(8);
                trackLocation.vaccuracy = cursor.getDouble(9);
            }while(cursor.moveToNext());
        }

        cursor.close();
        db.close();

        return trackLocation;
    }

Any help would be hugely appreciated.

Answer 1

To solve this problem here is what I did.

1. Only opened and closed the database once. Even if I opened and closed the database every time I used it, sometimes it wasn’t quick enough I think and hence I got the errors.
2. Closed the cursor after everytime I used it and had finished with it. This sorted the problem.