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Android Android Data Persistence Using SQLite for Structured Data Creating a SQLite Table

Posted by Adlight Sibanda
Adlight Sibanda
5,701 Points

ANOTHER CREATE STATEMENT

Next, add another create statement called CREATE_CAR_MODELS that is public static final. Give it a primary key called _id and a TEXT field called CAR_NAME. The primary key should autoincrement!

AutoSQLiteHelper.java 
public class AutoSQLiteHelper extends SQLiteOpenHelper {
  public static final String COLUMN_COMPANY_NAME = "COMPANY_NAME";
  public static final String COLUMN_CAR_MODELS = "CAR_MODELS";

  public static final String CREATE_CAR_MAKERS = 
          "CREATE TABLE CAR_MAKERS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_COMPANY_NAME + " TEXT)";


  public static final String CREATE_CAR_MODELS = 
          "CREATE TABLE CAR_MODELS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_CREATE_CAR_MODELS + " TEXT)";

  @Override
  public void onCreate(SQLiteDatabase database) {
    database.execSQL(CREATE_CAR_MAKERS);
    database.execSQL(CREATE_CAR_MODELS);
  }
}
Adlight Sibanda
Adlight Sibanda
5,701 Points

STILL GETTING A BUMMER,

4 Answers

Dan Johnson
Dan Johnson
40,533 Points
Dan Johnson
Dan Johnson
40,533 Points

Looks like just a mix up with constants:

// COLUMN_CREATE_CAR_MODELS -> COLUMN_CAR_MODELS
"CREATE TABLE CAR_MODELS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_CAR_MODELS + " TEXT)";

Everything else looks fine.

Adlight Sibanda
Adlight Sibanda
5,701 Points

public class AutoSQLiteHelper extends SQLiteOpenHelper { public static final String COLUMN_COMPANY_NAME = "COMPANY_NAME"; public static final String COLUMN_CAR_MODELS = "CAR_MODELS";

public static final String CREATE_CAR_MAKERS = "CREATE TABLE CAR_MAKERS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_COMPANY_NAME + " TEXT)";

public static final String CREATE_CAR_MODELS = 

      "CREATE TABLE CAR_MODELS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_CAR_MODELS + " TEXT)";

@Override public void onCreate(SQLiteDatabase database) { database.execSQL(CREATE_CAR_MAKERS); database.execSQL(CREATE_CAR_MODELS); } }

Dan Johnson
Dan Johnson
40,533 Points
Dan Johnson
Dan Johnson
40,533 Points

Looks like I missed the value of COLUMN_CAR_MODELS the first time, it should be assigned "CAR_NAME" instead of "CAR_MODELS". You may want to rename the constant to reflect that though it won't matter either way.

Adlight Sibanda
Adlight Sibanda
5,701 Points
Adlight Sibanda
Adlight Sibanda
5,701 Points

GOT IT ANX......

Lester Rusike
Lester Rusike
13,206 Points
Lester Rusike
Lester Rusike
13,206 Points

public class AutoSQLiteHelper extends SQLiteOpenHelper { public static final String COLUMN_COMPANY_NAME = "COMPANY_NAME"; public static final String COLUMN_CAR_MODELS = "CAR_MODELS"; public static final String CAR_NAME = "CAR_NAME";

public static final String CREATE_CAR_MAKERS = "CREATE TABLE CAR_MAKERS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + COLUMN_COMPANY_NAME + " TEXT)";

public static final String CREATE_CAR_MODELS = "CREATE TABLE CAR_MODELS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + CAR_NAME + " TEXT)";

@Override public void onCreate(SQLiteDatabase database) { database.execSQL(CREATE_CAR_MAKERS); database.execSQL(CREATE_CAR_MODELS); } }

TERRENCE MAVHUNGA
TERRENCE MAVHUNGA
6,053 Points
TERRENCE MAVHUNGA
TERRENCE MAVHUNGA
6,053 Points

public class AutoSQLiteHelper extends SQLiteOpenHelper {

public static final String COMPANY_NAME = "COMPANY_NAME"; public static final String COLUMN_CAR_MODELS = "CAR_MODELS"; public static final String CAR_NAME = "CAR_NAME";

public static final String CREATE_CAR_MAKERS = "CREATE TABLE CAR_MAKERS (id INTEGER PRIMARY KEY AUTOINCREMENT,"+COMPANY_NAME+"TEXT)";

public static final String CREATE_CAR_MODELS = "CREATE TABLE CAR_MODELS (_id INTEGER PRIMARY KEY AUTOINCREMENT, " + CAR_NAME +" TEXT)";

@Override public void onCreate(SQLiteDatabase database) { database.execSQL(CREATE_CAR_MAKERS); database.execSQL(CREATE_CAR_MODELS); } }