Creating Table in SQLlite

I am trying to creating two table with sql lite but the apps keep crashing.

Below is my code

   public void onCreate(SQLiteDatabase database) {

    String queryUser_Details = "CREATE TABLE user_details ( user_Id INTEGER PRIMARY KEY, name TEXT, " +
            "gender TEXT, hairColor TEXT, weight TEXT, height TEXT, age TEXT, comment TEXT)";

    database.execSQL(queryUser_Details);

    String queryUser_Activity =
            "CREATE TABLE user_activity ( detail_Id INTEGER PRIMARY KEY, time TEXT, location TEXT, note TEXT, FOREIGN KEY(user_Id) REFERENCES user_details(user_Id))";

    database.execSQL(queryUser_Activity);

}