App crashing when trying to add a second table

Question

Ok so I'm really confused at the moment. I'm trying to add a new table to my program, but whenever I do I crashes on my, specifically at the onCreate method. I cannot for the love of me figure out why. Any suggestions?

Also this is an error I get, but I can't find categories.db anywhere

Caused by: android.database.sqlite.SQLiteException: no such table: categories.db (code 1): , while compiling: SELECT * FROM categories.db

private final static int DB_VERSION = 2;

public static String TABLE_NAME = "players";
public static String DB_NAME = "playerslist.db";
public static String SCORE = "score";
public static String ID = "_id";
public static String PLAYER_NAME = "name";

public static String CATEGORY_TABLE_NAME = "categories";
public static String CATEGORY_NAME = "category_name";
public static String CATEGORY_VALUE = "category_value";
public static String CATEGORY_ID = "category_id";
public static String CATEGORY_PLAYER_ID = "category_player_id";

public static String CREATE_PLAYER_TABLE = "CREATE TABLE "+TABLE_NAME+" ("+ID+" INTEGER PRIMARY KEY AUTOINCREMENT, "+PLAYER_NAME+" TEXT, "+
        SCORE+" TEXT)";
public static String CREATE_CATEGORY_TABLE = "CREATE TABLE "+CATEGORY_TABLE_NAME+"("+CATEGORY_ID+" INTEGER" +
        "PRIMARY KEY AUTOINCREMENT, "+CATEGORY_NAME+" TEXT, "+CATEGORY_VALUE+" INTEGER, "
        +CATEGORY_PLAYER_ID+" INTEGER)";

public SQLHelp(Context context) {
    super(context, DB_NAME, null, 2);
}

@Override
public void onCreate(SQLiteDatabase db) {
    db.execSQL(CREATE_PLAYER_TABLE);
    db.execSQL(CREATE_CATEGORY_TABLE);
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    for(int i = oldVersion; i < newVersion; i++){
        switch(i){
            case 1:
                db.execSQL(CREATE_CATEGORY_TABLE);
            break;
        }
    }
}

Answer 1

更改您的CREATE TABLE字符串以将IF NOT EXISTS包括在内，
CREATE TABLE IF NOT EXISTS Table_name(Columns)

Answer 2

Delete your application from the device or emulator, and INSTALL/RUN again, and it should work.

I had the same problem, and I simple delete the application from device and it worked.

Answer 3

Try this..

While creating the second table, you had "INTEGER" + "PRIMARY KEY AUTOINCREMENT"..

I made that in one.

public static String CREATE_CATEGORY_TABLE = "CREATE TABLE "+CATEGORY_TABLE_NAME+"("+CATEGORY_ID+ " INTEGER PRIMARY KEY AUTOINCREMENT, "+CATEGORY_NAME+" TEXT, "+CATEGORY_VALUE+" INTEGER, "
    +CATEGORY_PLAYER_ID+" INTEGER)";

You should call SQLiteOpenHelper

private static class DatabaseHelper extends SQLiteOpenHelper{
    DatabaseHelper(Context context){
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }
    public void onCreate(SQLiteDatabase db){
          db.execSQL(CREATE_PLAYER_TABLE);
          db.execSQL(CREATE_CATEGORY_TABLE);
    }
    public void onUpgrade(SQLiteDatabase db, int arg1, int arg2{
          db.execSQL("DROP TABLE IF EXISTS " + CREATE_PLAYER_TABLE);
          db.execSQL("DROP TABLE IF EXISTS " + CREATE_CATEGORY_TABLE);
          onCreate(db);
    }