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次のコードでデータベースを作成しました：

public class DataEncryptHelper extends SQLiteOpenHelper {
    // If you change the database schema, you must increment the database
    // version.
    public static final int DATABASE_VERSION = 1;
    public static final String DATABASE_NAME = "DBSample.db";
    Context mContext;

    public DataEncryptHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        this.mContext = context;
    }

    public void onCreate(SQLiteDatabase db) {
        db.execSQL(Model.SQL_CREATE_STORY);
    }

    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // This database is only a cache for online data, so its upgrade policy
        // is
        // to simply to discard the data and start over
        db.execSQL(Model.SQL_DELETE_STORY);
        onCreate(db);
    }

    public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        onUpgrade(db, oldVersion, newVersion);
    }
    public void insertStory(String title, String content) {
        DataEncryptHelper mDbHelper = new DataEncryptHelper(mContext);
        // Gets the data repository in write mode
        SQLiteDatabase db = mDbHelper.getWritableDatabase();

        // Create a new map of values, where column names are the keys
        ContentValues values = new ContentValues();
        values.put(Model.COL_TITLE_STORY, title);
        values.put(Model.COL_CONTENT_STORY, content);

        // Insert the new row, returning the primary key value of the new row
        db.insert(Model.TABLE_STORY, null, values);
    }
}

そして、これはクラス Model です:

public class Model {

    public static final String TEXT_TYPE    = "TEXT";
    public static final String INTEGER_TYPE = "INTEGER";
    public static final String KEY_TYPE     = "KEY";
    private static final String COMMA_SEP   = ",";

    // TABLE STORY
    public static final String TABLE_STORY       = "Story";
    public static final String COL_TITLE_STORY   = "title_story";
    public static final String COL_CONTENT_STORY = "content_story";
    public static final String SQL_CREATE_STORY  = "CREATE TABLE " + TABLE_STORY
            + " (" + COL_TITLE_STORY + TEXT_TYPE + COMMA_SEP
            + COL_CONTENT_STORY + TEXT_TYPE + " )";
    public static final String SQL_DELETE_STORY  = "DROP TABLE IF EXISTS "
            + TABLE_STORY;

}

そして MainActivity で：

DataEncryptHelper dbEncrypt = new DataEncryptHelper(this);
dbEncrypt.insertStory("title1", "content1");

しかし、プロジェクトを実行すると、エラーが表示されます:

(1) 表 Story に title_story という名前の列がありません 挿入エラー title_story=title1 content_story=content1 android.database.sqlite.SQLiteException: 表 Story に title_story という名前の列がありません (コード 1): 、コンパイル中: INSERT INTO Story(title_story,content_story)値 (?,?)

4

1 に答える 1

1

フィールド名の後にスペースを追加 

// TABLE STORY
public static final String TABLE_STORY = "Story ";
public static final String COL_TITLE_STORY = "title_story ";
public static final String COL_CONTENT_STORY = "content_story ";
public static final String SQL_CREATE_STORY = "CREATE TABLE " + TABLE_STORY
        + " (" + COL_TITLE_STORY + TEXT_TYPE + COMMA_SEP
        + COL_CONTENT_STORY + TEXT_TYPE + " )";
public static final String SQL_DELETE_STORY = "DROP TABLE IF EXISTS "
        + TABLE_STORY;
于 2013-10-18T16:48:52.233 に答える