Error parsing XML - not well formed (invalid token)

I have already checked the other XML files for errors, however this is the file that the error message is saying the error is in. There is also a message that pops up whenever I try to run the app that says, "Files under the build folder are generated and should not be edited".

package com.example.drive.drivercorder;

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

import android.util.Log;

public class DBAdapter {

private static final String TAG = "DBAdapter";

public static final String KEY_ROWID = "_id";
public static final int COL_ROWID = 0;

public static final String KEY_DRIVETIME = "Drive Time";
public static final String KEY_NIGHTORDAY = "Time of Day";



public static final int COL_DRIVETIME = 1;
public static final int COL_NIGHTORDAY = 2;



public static final String[] ALL_KEYS = new String[] {KEY_ROWID, KEY_DRIVETIME, KEY_NIGHTORDAY, };


public static final String DATABASE_NAME = "MyDb";
public static final String DATABASE_TABLE = "mainTable";

public static final int DATABASE_VERSION = 2;   

private static final String DATABASE_CREATE_SQL = 
        "create table " + DATABASE_TABLE 
        + " (" + KEY_ROWID + " integer primary key autoincrement, "

        + KEY_DRIVETIME + " integer not null, "
        + KEY_NIGHTORDAY + " text not null "



        + ");";


private final Context context;

private DatabaseHelper myDBHelper;
private SQLiteDatabase db;



public DBAdapter(Context ctx) {
    this.context = ctx;
    myDBHelper = new DatabaseHelper(context);
}


public DBAdapter open() {
    db = myDBHelper.getWritableDatabase();
    return this;
}


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


public long insertRow(int drivetime, String nightorday) {

    ContentValues initialValues = new ContentValues();
    initialValues.put(KEY_DRIVETIME, Drive Time);
    initialValues.put(KEY_NIGHTORDAY, Time of Day);



    return db.insert(DATABASE_TABLE, null, initialValues);
}

public boolean deleteRow(long rowId) {
    String where = KEY_ROWID + "=" + rowId;
    return db.delete(DATABASE_TABLE, where, null) != 0;
}

public void deleteAll() {
    Cursor c = getAllRows();
    long rowId = c.getColumnIndexOrThrow(KEY_ROWID);
    if (c.moveToFirst()) {
        do {
            deleteRow(c.getLong((int) rowId));              
        } while (c.moveToNext());
    }
    c.close();
}


public Cursor getAllRows() {
    String where = null;
    Cursor c =  db.query(true, DATABASE_TABLE, ALL_KEYS, 
                        where, null, null, null, null, null);
    if (c != null) {
        c.moveToFirst();
    }
    return c;
}


public Cursor getRow(long rowId) {
    String where = KEY_ROWID + "=" + rowId;
    Cursor c =  db.query(true, DATABASE_TABLE, ALL_KEYS, 
                    where, null, null, null, null, null);
    if (c != null) {
        c.moveToFirst();
    }
    return c;
}


public boolean updateRow(long rowId, String drivetime, String nightorday) {
    String where = KEY_ROWID + "=" + rowId;

    ContentValues newValues = new ContentValues();
    newValues.put(KEY_DRIVETIME, Drive Time);
    newValues.put(KEY_NIGHTORDAY, Time of Day);

    return db.update(DATABASE_TABLE, newValues, where, null) != 0;
}


private static class DatabaseHelper extends SQLiteOpenHelper{
    DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase _db) {
        _db.execSQL(DATABASE_CREATE_SQL);           
    }

    @Override
    public void onUpgrade(SQLiteDatabase _db, int oldVersion, int newVersion) {
        Log.w(TAG, "Upgrading application's database from version " + oldVersion
                + " to " + newVersion + ", which will destroy all old data!");

        _db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);


        onCreate(_db);
    }
}

}