2

これは私がSQLiteデータベースを構築するように教えられた方法ですが、もっと簡単な方法があるはずだと感じています。ほとんどの列は常に同じデフォルト値で始まるので、テーブルを作成するときにデフォルト値を設定する方法があります。

public class SQLiteTable {

public static final String KEY_ROWID = "_id";
public static final String KEY_LEVEL = "level";
public static final String KEY_HEALTH = "health";
public static final String KEY_NAME = "name";
public static final String KEY_CRIT = "crit";
public static final String KEY_CRIT_RANGE = "crit_range";
public static final String KEY_CRIT_INC = "crit_increment";
public static final String KEY_HIT_RANGE = "hit_range";
public static final String KEY_HIT_INC = "hit_increment";
public static final String KEY_CHAR_IMG = "character_image";
public static final String KEY_TOTAL_XP = "total_xp";
public static final String KEY_XP = "xp";
public static final String KEY_XP_NEEDED = "xp_needed";
public static final String KEY_COINS = "coins";
public static final String KEY_SMALL_POTS = "small_pots";
public static final String KEY_LARGE_POTS = "large_pots";

private DbHelper ourHelper;
private final Context ourContext;
private SQLiteDatabase ourDatabase;

private static final String DATABASE_NAME = "Battle For Christams";
private static final String DATABASE_TABLE = "Application Variables";
private static final int DATABASE_VERSION = 1;


private static class DbHelper extends SQLiteOpenHelper{

    public DbHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        // TODO Auto-generated constructor stub
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        // TODO Auto-generated method stub
        db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" +
                KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + 
                KEY_LEVEL + " TEXT NOT NULL, " + 
                KEY_HEALTH + " TEXT NOT NULL, " +
                KEY_NAME + " TEXT NOT NULL, " +
                KEY_CRIT + " TEXT NOT NULL, " +
                KEY_CRIT_RANGE + " TEXT NOT NULL, " +
                KEY_CRIT_INC + " TEXT NOT NULL, " +
                KEY_HIT_RANGE + " TEXT NOT NULL, " +
                KEY_HIT_INC + " TEXT NOT NULL, " +
                KEY_CHAR_IMG + " TEXT NOT NULL, " +
                KEY_TOTAL_XP + " TEXT NOT NULL, " +
                KEY_XP + " TEXT NOT NULL, " +
                KEY_XP_NEEDED + " TEXT NOT NULL, " +
                KEY_COINS + " TEXT NOT NULL, " + 
                KEY_SMALL_POTS + " TEXT NOT NULL, " +
                KEY_LARGE_POTS + " TEXT NOT NULL)"
            );

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // TODO Auto-generated method stub
        db.execSQL("DROP TABLE IF EXIST " + DATABASE_TABLE);
        onCreate(db);
    }

}
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1 に答える 1

3

デフォルト値を持つ列にはDEFAULT句を使用できます。できませんか？詳細については、こちらを参照してください。

于 2012-12-26T04:05:07.353 に答える