java - 插入日期和时间

Question

我正在尝试将日期选择器和时间选择器中的值插入我的 sqlite 数据库中。我已将日期和时间存储在对象变量中，然后调用 DBhandler 类中的方法以通过 contentvalue 对象插入它们。

现在我失败的地方是实际的插入和数据类型。

我在“timeApp”和“dateApp”的以下代码中遇到错误，我将这些变量作为 DATE 和 TIME 变量传递给 createAppointmentEntry' 方法。:

错误消息:

 The method put(String, String) in the type ContentValues is not applicable for the arguments (String, Time)

解决发生错误的方法:

public void createAppointmentEntry(String nameApp, String typeApp, Time timeApp, Date dateApp ,String commentApp, Boolean onOrOff) {



        ContentValues cv = new ContentValues();
        cv.put(KEY_NAMEAPP, nameApp);
        cv.put(KEY_TYPEAPP, typeApp);

                    //ERROR on the following two 'puts'
        cv.put(KEY_TIMEAPP, timeApp);
        cv.put(KEY_DATEAPP, dateApp);

        cv.put(KEY_COMMENTAPP, commentApp);
        cv.put(KEY_ALARM, onOrOff);
        ourDatabase.insert(DATABASE_TABLE, null, cv);

这是我的数据库列:

    public static final String KEY_ROWAPPID = "_appid";
public static final String KEY_NAMEAPP = "app_name";
public static final String KEY_TYPEAPP = "app_type";
public static final String KEY_TIMEAPP = "app_time";
public static final String KEY_DATEAPP = "app_date";
public static final String KEY_COMMENTAPP = "app_comments";
public static final String KEY_ALARM = "app_alarm";

我的onCreate方法:

db.execSQL("CREATE TABLE " + DATABASE_TABLEAPP + " (" +
            KEY_ROWAPPID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
                KEY_NAMEAPP + " TEXT NOT NULL, " +
                KEY_TYPEAPP + " TEXT NOT NULL, " +
                KEY_TIMEAPP + " TEXT NOT NULL, " +
                KEY_DATEAPP + " TEXT NOT NULL, " +
                KEY_COMMENTAPP + " TEXT NOT NULL, " +
                KEY_ALARM + "BOOLEAN NOT NULL);"

                );

这是我如何设置时间和日期对象变量:

    Date setDate = new Date(dobYear - 1900, dobMonth, dobDate);


Time timeToSet = new Time();
timeToSet.set(0, dobMinute, dobHour);

Answer 1

从编译错误和ContentValues的API来看，ContentValues似乎只支持原始类型、String和byte []。因此，尝试替换:

//ERROR on the following two 'puts'
 cv.put(KEY_TIMEAPP, timeApp);
 cv.put(KEY_DATEAPP, dateApp);

与:

 cv.put(KEY_TIMEAPP, timeApp.toString());
 cv.put(KEY_DATEAPP, dateApp.toString());

您可以使用格式化程序将时间和日期格式化为标准字符串，以便能够解析它。