Question

我正在使用Android制作时间表应用程序。我是初学者，对数据库编程知之甚少。

以下是我正在使用的数据库的代码：

public class TsData{

    private static final String TS_DATABASE = "timesheetdb";
    private static final int DATABASE_VERSION = 1;
    private static final String TS_TABLE = "database";

    public static final String ROW_ID = BaseColumns._ID;
    public static final String PROJ_NAME = "projname";
    public static final String START_TIME = "stime";
    public static final String DATE = "date";
    public static final String STOP_TIME="";
    public static final String ACT_NAME = "actname";
    public static final String TOTAL_TIME = "ttime";

    private DBhelper ourHelper;
    private final Context ourContext;
    private SQLiteDatabase ourDataBase;

    private static class DBhelper extends SQLiteOpenHelper{
        public DBhelper(Context context) {
            super(context, TS_DATABASE, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            String sql = "CREATE TABLE " + TS_TABLE + "(" + ROW_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
                + ACT_NAME + " TEXT NOT NULL, "
                + DATE + " TEXT NOT NULL, " 
                + START_TIME + " TEXT NOT NULL, "
                + STOP_TIME + " TEXT NOT NULL" + ");";
            db.execSQL(sql);
        }


        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            db.execSQL("DROP TABLE IF EXISTS " + TS_TABLE);
            onCreate(db);
        }
    }

    public TsData(Context c){
        ourContext=c;
    }

    public TsData open()throws SQLException{
        ourHelper = new DBhelper(ourContext);
        ourDataBase = ourHelper.getWritableDatabase();
        return this;
    }

    public void close(){
        ourHelper.close();
    }

    public long insertEntry(String act_name2, String startDate, String startTime, String stopTime) {
        ContentValues values = new ContentValues();
        values.put(ACT_NAME, act_name2);
        values.put(DATE, startDate);
        values.put(START_TIME, startTime);
        values.put(STOP_TIME, stopTime);
        System.out.println("record inserted");
        return ourDataBase.insert(TS_TABLE, null, values);
    }

    public String getData() {
        // TODO Auto-generated method stub
        String[] columns = new String[]{ROW_ID, ACT_NAME, DATE, START_TIME, STOP_TIME};
        Cursor cr = ourDataBase.query(TS_TABLE, columns, null, null, null, null, null);
        String result="";

        int iRow=cr.getColumnIndex(ROW_ID);
        int iName=cr.getColumnIndex(ACT_NAME);
        int istartTime=cr.getColumnIndex(START_TIME);
        int istopTime=cr.getColumnIndex(STOP_TIME);
        int iDate=cr.getColumnIndex(DATE);

        for(cr.moveToFirst();!cr.isAfterLast();cr.moveToNext()) {
            result=result+cr.getString(iRow)+"  "
                +cr.getString(iName)+"  "
                +cr.getString(iDate)+"  "
                +cr.getString(istartTime)+"  "
                +cr.getString(istopTime)+"\n";
        }
        return result;
    }

    public void deleteEntry(long rowNo) {
        // TODO Auto-generated method stub
        ourDataBase.delete(TS_TABLE, ROW_ID + "=" + rowNo, null);
    }
}

但是当我在表格中插入记录时出现以下错误：

10-21 20：33：11.044：I / Database（6597）：sqlite返回：错误代码= 1，msg = near“，”：语法错误

我已经仔细检查了所有语法，但没有得到任何解决方案。

Answer 1

public static final String STOP_TIME =“”; ??? 为STOP_TIME使用一些值。

或

CREATE TABLE   TS_TABLE  (  ROW_ID   INTEGER PRIMARY KEY AUTOINCREMENT, 
         ACT_NAME   TEXT NOT NULL, 
         DATE   TEXT NOT NULL,  
         START_TIME   TEXT NOT NULL );

如何解决错误代码= 1，msg = near“，”：android中的sqlite语法错误

1 个答案: