Question

我试图在sqlite数据库中插入多行。我创建了一个SqliteOpenHelper类，并创建了一个数据库和一个表。现在我需要做的是在数据库中插入多行。

假设我们一次插入五行，实现它的最佳和有效方法是什么。

INSERT INTO `events` (`_id`, `event_name`, `start_date`, `end_date`, `event_city`, `event_state`, `event_pic`, `event_desc`, `wiki_url`, `event_cat`) VALUES
(1, 'Purna Kumbh Fair 2013', '2013-01-27', '2013-03-10', 'Allahabad', 'Uttar Pradesh', 'img/kumbh.jpg', 'Kumbh Fair is a mass Hindu pilgrimage of faith in which Hindus gather at a sacred river for a bath in the river. It is held every third year at one of the four places by rotation: Haridwar, Prayag (Allahabad), Nasik and Ujjain.', 'http://en.wikipedia.org/wiki/Kumbh_Mela', 2),
(2, 'Taj Mahotsav 2013', '2013-02-18', '2013-02-27', 'Agra', 'Uttar Pradesh', 'img/taj-mahotsav.jpg', 'aj Mahotsav is an annual 10 day (from 18 to 27 February) event at Shilpgram in Agra, India. Every year in February tourists flock to Agra for this mega event, just a stone throw from the majestic Taj Mahal. This festival invokes the memories of old Mughal era and nawabi style prevalent in Uttar Pradesh in 18th and 19th centuries.', '', 0),
(3, 'Khajuraho Dance festival', '2013-02-01', '2013-02-08', 'Khajuraho', 'Madhya Pradesh', 'img/Khajuraho-Dance-Festival.jpg', 'One week long festival of classical dances held annually against the spectacular backdrop of the magnificently lit Khajuraho temples in Chhatarpur district of Madhya Pradesh.', '', 0),
(4, 'Holi - Festival of Colors', '2013-03-26', '2013-03-27', 'National', 'Festival', 'img/holi.jpg', 'Holi - The Festival of Colors marks the beginning of ceremonies being the first festival in the Hindu calendar. On this day, people greet each other with colours and celebrate the occasion with much gaiety and excitement.', '', 0),
(5, 'Elephant Festival', '2013-03-26', '2013-03-26', 'Jaipur', 'Rajasthan', 'img/elephant.jpg', 'Jaipur Elephant Festival, perhaps the only festival where Elephants are given prime importance.During the festival, Jaipur comes alive with elephants, dancers and musicians which draw visitors from all over the world.', '', 0),

Answer 1

尝试为数据库创建一个单独的类，如

public class databasehandler extends SQLiteOpenHelper{

private static final int DATABASE_VERSION = 5;
        // Database Name
        private static final String DATABASE_NAME = "atabase";

        // Contacts table name
        private static final String TABLE_Name = "task";
        // Contacts Table Columns names
        private static final String event_name= "event_name";
        private static final String start_date= "start_date";
        private static final String KEYID="id";
        private static final String  end_date= "end_date";
        private static final String event_pic= "event_pic";
        private static final String  event_desc= "event_desc";
        private static final String wiki_url= "wiki_url";
        private static final String event_cat= "event_cat";


public databasehandler(Context context){
                super(context, DATABASE_NAME, null, DATABASE_VERSION);
            }

@Override
            public void onCreate(SQLiteDatabase db) {
                // TODO Auto-generated method stub
                String CREATETABLE = "CREATE TABLE " + TABLE+ "("
                        + KEYID + " INTEGER PRIMARY KEY AUTOINCREMENT," + event_name+ " TEXT,"
                        + start_date+ " TEXT," + end_date+" TEXT "+ ..... so on ")";
                                db.execSQL(CREATE_TASK_TABLE);
                db.execSQL(CREATETABLE );

            }



@Override
            public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
                // Drop older table if existed
                db.execSQL("DROP TABLE IF EXISTS " + TABLE);
                                // Create tables again
                onCreate(db);

            }

void adddata(Classname Object) {
                SQLiteDatabase db = this.getWritableDatabase();

                ContentValues values = new ContentValues();
                values.put(event_name, Object.getevent_name()); 
                values.put(start_date, Object.gestart_date()); 
                values.put(TASK_ID, Object.getTASK_ID());
                                        insert all values....

                // Inserting Row
                db.insert(Table_tasknotification, null, values);
                 // Closing database connection
            }

}

现在Classname.java

public class Classname {
    //private variables name like
              String event_name;
              .... so on

        // Empty constructor
        public Classname (){

        }
        // constructor
        public Classname (String  event_name, String start_date,String end_date.....){
            this.event_name= event_name;
            this.start_date=start_date;
            this.end_date=end_date;
        }


        public int getID(){
            return this._id;
        }

        // setting id
        public void setID(int id){
            this._id = id;
        }
                   and all the get and set methods....



}

并在您的主要班级： -

databasehandler handler=new databasehandler (context);
handler.adddata(new Classname(event_name, start_date,end_date....));

试试这个它会告诉你:) 并查看此链接http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/

在sqlite数据库中一次插入多行

1 个答案: