java - 显示当前日期

Question

下面是我查询 sqlite 数据库的 java 代码的一些部分。保存数据时如何添加自动当前日期？我使用的 _DATE 和 _TIME 使用的是文本字段，但我想在保存日记时使用显示当前日期

private static final String DIARY_TABLE = "diarytable";
        private static final String _ID = "id";
        private static final String _NAME = "workout";
        private static final String _DATE = "date";
        private static final String _TIME = "time";
        private static final String _NOTES = "notes";

        public data(Context context) {
            super(context, DB_NAME, null, DB_VERSION);
            this.context=context;
        }



        @Override
        public void onCreate(SQLiteDatabase db) {
            try{
               // db.execSQL(CREATE_TABLE);
                db.execSQL("CREATE TABLE " + TABLE_NAME + " ( " + UID + " integer primary key autoincrement," +
                        "" + NAME + " VARCHAR(50), " +
                        "" + _STATUS + " VARCHAR(255)," +
                        "" + WEIGHT + " VARCHAR(255));");
                message.mess(context,"Database Created");

 //               db.execSQL(CREATE_TABLE1);
                db.execSQL("CREATE TABLE "+ DIARY_TABLE+ " ( "+_ID+" integer primary key autoincrement," +
                        ""+_NAME+" VARCHAR(50), " +
                        ""+_DATE+" VARCHAR(10)," +
                        ""+_TIME+" VARCHAR(5)," +
                        ""+_NOTES+" VARCHAR(255));");
                message.mess(context,"Second Database Created");

            }
            catch(SQLException e){
                message.mess(context, "Failed" +e);
            }
        }

Answer 1

尝试

 String getCurrentDateTime = DateFormat.getDateTimeInstance().format(new Date());
 String getCurrentDate = new SimpleDateFormatDateFormat.getDateTimeInstance("yyyy-MM-dd").format(new Date());