SQLiteConstraintException：UNIQUE制約が失敗しました

Question

他のトピックを見ましたが、コードでエラーが見つかりません。これは、DB

public class DBHelper extends SQLiteOpenHelper { 

    //data base name 
    private static final String DATABASE_NAME = "roomatesDB"; 

    //data base version 
    private static final int DATABASE_VERSION = 1; 

    //tables name 
    public static final String APARTMENT_TABLE = "apartment"; 
    public static final String ROOMATE_TABLE = "roomate"; 
    public static final String SHOPCART_TABLE = "shopcart"; 
    public static final String ITEMS_TABLE = "items"; 

    //common column 
    public static final String APARTMENT_NUMBER_COLUMN = "apartmentNum"; 

    //roomates table columns 
    public static final String FIRST_NAME_COLUMN = "firstName"; 
    public static final String LAST_NAME_COLUMN = "lastName"; 
    public static final String PHONE_NUMBER_COLUMN = "phoneNumber"; 

    //shop cart table columns 
    public static final String NUMBER_COLUMN = "number"; 
    public static final String LIST_NAME_COLUMN = "name"; 

    //item table 
    public static final String PRICE_COLUMN = "price"; 
    public static final String ITEM_NAME_COLUMN = "name"; 

    //query for creating roomate table 
    public static final String CREATE_ROOMATE_TABLE = "CREATE TABLE " 
      + ROOMATE_TABLE + "(" + FIRST_NAME_COLUMN + " TEXT, " 
      + LAST_NAME_COLUMN + " TEXT, " + PHONE_NUMBER_COLUMN + " TEXT, " 
      + APARTMENT_NUMBER_COLUMN + " INTEGER, " 
      + "FOREIGN KEY(" + APARTMENT_NUMBER_COLUMN + ") REFERENCES " 
      + APARTMENT_TABLE + "(apartmentNum) " + ")"; 

    //query for crating shop cart table 
    public static final String CREATE_SHOPLIST_TABLE = "CREATE TABLE " 
      + SHOPCART_TABLE + "(" + NUMBER_COLUMN + " INTEGER PRIMARY KEY," 
      + LIST_NAME_COLUMN + " TEXT, " 
      + APARTMENT_NUMBER_COLUMN + " INTEGER, " 
      + "FOREIGN KEY(" + APARTMENT_NUMBER_COLUMN + ") REFERENCES " 
      + APARTMENT_TABLE + "(apartmentNum) " + ")"; 

    //query for creating shop item table 
    public static final String CREATE_SHOPITEM_TABLE = "CREATE TABLE " 
      + ITEMS_TABLE + "(" + ITEM_NAME_COLUMN + " TEXT," 
      + PRICE_COLUMN + " DOUBLE, " 
      + NUMBER_COLUMN + " INT, " 
      + "FOREIGN KEY(" + NUMBER_COLUMN + ") REFERENCES " 
      + SHOPCART_TABLE + "(number) " + ")"; 

    //query for creating apartment table 
    public static final String CREATE_APARTMENT_TABLE = "CREATE TABLE " 
      + APARTMENT_TABLE + "(" + APARTMENT_NUMBER_COLUMN + " INTEGER PRIMARY KEY" 
      + ")"; 


    public DBHelper(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 

    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 
     db.execSQL(CREATE_APARTMENT_TABLE); 
     db.execSQL(CREATE_ROOMATE_TABLE); 
     db.execSQL(CREATE_SHOPLIST_TABLE); 
     db.execSQL(CREATE_SHOPITEM_TABLE); 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
     db.execSQL("DROP TABLE IF EXISTS " + APARTMENT_TABLE); 
     db.execSQL("DROP TABLE IF EXISTS " + ROOMATE_TABLE); 
     db.execSQL("DROP TABLE IF EXISTS " + SHOPCART_TABLE); 
     db.execSQL("DROP TABLE IF EXISTS " + ITEMS_TABLE); 

     onCreate(db); 

    } 

と活動が話題 にエラーで がロードされる前に、ヨーヨーが活動

public void createApartment() { 
    SQLiteDatabase db = this.getWritableDatabase(); 



    ContentValues values = new ContentValues(); 
    values.put(APARTMENT_NUMBER_COLUMN, 1); 
    // Inserting Row 
    db.insert(APARTMENT_TABLE, null, values); 
    db.close(); // Closing database connection 
} 

public void addRoomate(RoomateModel r) { 
     SQLiteDatabase db = this.getWritableDatabase(); 

     int i = 1; 

     ContentValues values = new ContentValues(); 
     values.put(FIRST_NAME_COLUMN, r.getName()); // Contact Name 
     values.put(LAST_NAME_COLUMN, r.getLastName()); 
     values.put(PHONE_NUMBER_COLUMN, r.getPhoneNumber()); // Contact Phone Number 
     values.put(APARTMENT_NUMBER_COLUMN, i); 
     // Inserting Row 
     db.insert(ROOMATE_TABLE, null, values); 
     db.close(); // Closing database connection 
    } 

    public RoomateModel getRoomates() { 
     RoomateModel r = null; 
     SQLiteDatabase db = this.getReadableDatabase(); 
     String query = "SELECT * FROM " + ROOMATE_TABLE + " WHERE 1"; 

     Cursor c = db.rawQuery(query, null); 
     c.moveToFirst(); 
     while (!c.isAfterLast()) { 
      String name = c.getString(0); 
      String lastName = c.getString(1); 
      String phoneNumber = c.getString(2); 
      r = new RoomateModel(name, lastName, phoneNumber); 
     } 
     if (r == null) { 
      r = new RoomateModel("bla", "bla", "bla"); 
     } 

     return r; 
    } 

アプリケーションがクラッシュした上でこれらの機能を実行しようとイムをチェックするために作成するための私のコードですこれはlogcat：

Error Code : 1555 (SQLITE_CONSTRAINT_PRIMARYKEY) 
Caused By : Abort due to constraint violation. 
(UNIQUE constraint failed: apartment.apartmentNum (code 1555)) 
################################################################# 
at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method) 
at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:952) 
at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788) 
at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86) 
at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1609) 
at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1479) 
at atoa.roomates.SupportOperations.DBHelper.createApartment(DBHelper.java:106) 
at atoa.roomates.QA.getRoomate(QA.java:49) 
at atoa.roomates.QA.onCreate(QA.java:42) 

Answer 1

テーブルにプライマリキーがあるため、一意の値である必要があります。

public static final String CREATE_APARTMENT_TABLE = "CREATE TABLE " 
     + APARTMENT_TABLE + "(" + APARTMENT_NUMBER_COLUMN + " INTEGER PRIMARY KEY" 
     + ")"; 

ただし、常にその列に値1を挿入しています。

values.put(APARTMENT_NUMBER_COLUMN, 1); 
// Inserting Row 
db.insert(APARTMENT_TABLE, null, values); 

はこれを修正するには、いくつかの方法がありますが、あなたは常に明確な数字を使用しての代わりに開始すべき1