如何将日期插入到 SQLite 中？

Question

我遇到了这个错误：

Cannot resolve method 'put(java.lang.String, java.util.Date)'

在下面的代码中：

lsd 和 nsd 是数据类型为 DATE 的列名。

public void onCreate(SQLiteDatabase db)
{
    String query="CREATE TABLE"+c_tablename+"(c_id int AUTO_INCREMENT primary key,name varchar(20),contact double ,address varchar(50)," +
            "bike_number varchar(16),bike_type varchar(10),lsd date,nsd date,lwd varchar(100),cost int,message varchar(100))";
    db.execSQL(query);

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
    String query= "DROP TABLE IF EXIST "+c_tablename;
    String query2="DROP TABLE IF EXIST "+h_tablename;
    db.execSQL(query);
    db.execSQL(query2);

    onCreate(db);
}

public void  saveData(String name , int contact , String address , String bike_number , String bike_type , java.util.Date lsd  ,
                      java.util.Date nsd , String lwd , int cost , String message )
{
    ContentValues contentValues=new ContentValues();
    contentValues.put("name",name);
    contentValues.put("contact",contact);
    contentValues.put("address",address);
    contentValues.put("bike_number",bike_number);
    contentValues.put("bike_type",bike_type);
    contentValues.put("lsd",lsd);
    // The error is in the following line ("Cannot resolve method 'put(java.lang.String, java.util.Date)'"):
    contentValues.put("nsd",nsd);
    contentValues.put("lwd",lwd);
    contentValues.put("cost",cost);
    contentValues.put("message",message);
}

Answer 1

嗨，你能试试这样吗，

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
ContentValues contentValues=new ContentValues();
contentValues.put("lsd", dateFormat.format(lsd));

Answer 2

Akshay 显示了您问题的正确解决方案。

背景信息是SQLite不支持日期类型：

SQLite does not have a storage class set aside for storing dates and/or times. Instead, the built-in Date And Time Functions of SQLite are capable of storing dates and times as TEXT, REAL, or INTEGER values

请参阅位于 https://www.sqlite.org/datatype3.html#section_2_2

的 SQLite 文档

如何将日期插入到 SQLite 中？

How to insert date into SQLite?

sqlite

android

android-sqlite