我该怎么做才能将日期发送到光标？

Question

我无法通过光标获取日期，我测试了所有可能性，但找不到解决方案。

我都试过了。问题是我想要获取 KEY_DATE_TREATMENT

的第 4 行

 public List<Treatment> getTreatmentsList(){
        List<Treatment> tList = new ArrayList<>();
        Cursor c = getTreatments();
        if (c.moveToFirst())
        {
            do {

                SimpleDateFormat dateFormatprev = new SimpleDateFormat("yyyy-MM-dd");
                Date d = new Date();
                try {
                    d = dateFormatprev.parse(c.getString(c.getColumnIndex(KEY_DATE_TREATMENT)));
                }
                catch (ParseException e){

                }

                Treatment data = new Treatment(c.getInt(c.getColumnIndex(KEY_ID_TREATMENT)),
                        c.getInt(c.getColumnIndex(KEY_IDPARCEL_TREATMENT)),
                        c.getInt(c.getColumnIndex(KEY_IDTREATMENTPRODUCT_TREATMENT)),
                        c.getInt(c.getColumnIndex(KEY_IDWEATHER_TREATMENT)),
                        c.getString(c.getString(c.getColumnIndex(KEY_DATE_TREATMENT)));

                tList.add(data);
            }
            while (c.moveToNext());
        }
        c.close();

    }

我目前的错误是：

getString(int) in Cursor cannot be applied to Java.lang.String

Answer 1

您对 getString() 进行了额外的不必要且错误的调用：

c.getString(c.getString(c.getColumnIndex(KEY_DATE_TREATMENT)))

更改为：

        Treatment data = new Treatment(c.getInt(c.getColumnIndex(KEY_ID_TREATMENT)),
                c.getInt(c.getColumnIndex(KEY_IDPARCEL_TREATMENT)),
                c.getInt(c.getColumnIndex(KEY_IDTREATMENTPRODUCT_TREATMENT)),
                c.getInt(c.getColumnIndex(KEY_IDWEATHER_TREATMENT)),
                c.getString(c.getColumnIndex(KEY_DATE_TREATMENT)));

Answer 2

通过更改修复：-

c.getString(c.getString(c.getColumnIndex(KEY_DATE_TREATMENT)));

收件人：-

c.getString(c.getColumnIndex(KEY_DATE_TREATMENT));

您尝试将 c.getString() 与 String 参数一起使用，而不是 int 参数，因为您将 c.getString(c.getColumnIndex(KEY_DATE_TREATMENT)) 作为参数。 arg return String（你想要获取的数据）不是整数.

Link 说：-

getString
public abstract String getString (int columnIndex)
Parameters

columnIndex int: the zero-based index of the target column.

c.getColumnIndex(KEY_DATE_TREATMENT) 得到一个 int，值为 name 的列的列偏移量 KEY_DATE_TREATMENT 并在 getString 方法中工作（就像其他使用 getInt[=41 的行一样=]).

我该怎么做才能将日期发送到光标？

How can I do for send date to cursor?

java

android

date

android-cursor