Question

我需要知道如何默认情况下（当您第一次将数据加载应用程序时）将数据插入到我的sqlite数据库中，例如

gameidno ：1 gamedate ：2014年11月30日 gameteam ：马刺
gameopponent ：LAL

gameidno ：2
的 gamedate ：2014年5月12日
的 gameteam ：马刺
gameopponent ：小牛

gameidno ：3
的 gamedate ：2014年9月12日
的 gameteam ：马刺
gameopponent ：孟菲斯

这是我的DBhelper：

 public void onCreate(SQLiteDatabase db) {
    db.execSQL("CREATE TABLE if not exists gamestable(id INTEGER PRIMARY KEY AUTOINCREMENT,"
            + "gameidno"
            + " INTEGER,"
            + "gamedate"
            + " TEXT,"
            + "gameteam"
            + " TEXT,"
            + "gameopponent" + " TEXT)");
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    db.execSQL("DROP TABLE IF EXISTS" + gamestable);
    onCreate(db);
}

public void addGame(GameModel gameitem) {
    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues contentValues = new ContentValues();


    contentValues.put("gameidno", gameitem.gameidno);
    contentValues.put("gamedate", gameitem.gamedate );
    contentValues.put("gameteam", gameitem.gameteam);
    contentValues.put("gameopponent", gameitem.gameopponent);
    db.insert("gamestable", null, contentValues);

    db.close();
}

这是我的班级：

public class AddGames extends Activity implements OnClickListener {

    private Button btn_addrecord;
    private EditText txtpname;
    DatabaseHelper db;
    GameModel pm;
    private Spinner gamesSpinner;
    private Spinner timeSpinner;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.add_reminder);

        txtpname = (EditText) findViewById(R.id.myEditText);

        gamesSpinner = (Spinner) findViewById(R.id.games_spinner);  
        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
                R.array.reminders_list, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        gamesSpinner.setAdapter(adapter);


        timeSpinner = (Spinner) findViewById(R.id.time_spinner);    
        ArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(this,
                R.array.time_list, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        timeSpinner.setAdapter(adapter1); 


        btn_addrecord = (Button) findViewById(R.id.button1);
        btn_addrecord.setOnClickListener(this);

    }

    @Override
    public void onClick(View v) {
         DatabaseHelper db;
         ProductModel pm;

        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.button1:

            if (txtpname.getText().toString().equals("")
                    || gamesSpinner.getSelectedItem().toString().equals("")) {
                Toast.makeText(AddGames.this, "Please add values..",
                        Toast.LENGTH_LONG).show();
            } else {

                db = new DatabaseHelper(getApplicationContext());
                db.getWritableDatabase();
                pm = new GamesModel();
                pm.idno = (txtpname.getText().toString());
                pm.gamename = gameSpinner.getSelectedItem().toString();
                pm.reminderway = timeSpinner.getSelectedItem().toString();

                Log.i("gameidno,gamename,productprice", "" + pm.idno + ""
                        + pm.gamename + "" + pm.reminderway);
                   db.addGame(pm);
                Toast.makeText(Addgame.this, "Record Added successfully.",
                        Toast.LENGTH_LONG).show();
                finish(); 
            }
            break;

        default:
            break;
        }

    }

GameModel类：

public class GameModel {
 public String gameidno="", gamedate="", gameteam="", gameopponent="";

    public String getgamedate() {
        return gamedate;
    }

    public void setgamedate(String gamedate) {
        this.gamedate = gamedate;
    }

    public String getgameteam() {
        return gameteam;
    }

    public void setgameteam(String gameteam) {
        this.gameteam = gameteam;
    }


    public String getgameopponent() {
        return gameopponent;
    }

    public void setgameopponent(String gameopponent) {
        this.gameopponent = gameopponent;
    }


    public String getgameIdno() {
        return gameidno;
    }

    public void setgameIdno(String idno) {
        this.gameidno = gameidno;
    }


}

Answer 1

您需要在oncreate方法中维护一个首选项变量，如下面所示：

public class AddGames extends Activity implements OnClickListener {

SharedPreferences pref;

private Button btn_addrecord;
private EditText txtpname;
DatabaseHelper db;
GameModel pm;
private Spinner gamesSpinner;
private Spinner timeSpinner;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.add_reminder);

    pref=getSharedPreferences("your_pref_name", MODE_PRIVATE);

    boolean firstTime=pref.getBoolean("first_launch", false);
    if(firstTime == false){

            pm = new GamesModel();
            pm.idno = "your_id";
            pm.gamename = "your_game_name";
            pm.reminderway = "your_reminder";

            pm.addGame(pm);

            Toast.makeText(Addgame.this, "Fisrt Record Added successfully.",
                    Toast.LENGTH_LONG).show();

       SharedPreference.Editor ed=pref.edit();
       pref.putBoolean("first_launch", true);
       ed.commit();
    }
  }

Answer 2

只需将此构造函数放入GameModel类。

 public GameModel (String gameidno,String gamedate,String gameteam,String gameopponent){
    this.gameidno= gameidno;
    this.gamedate= gamedate;
    this.gameteam= gameteam;
    this.gameopponent= gameopponent;
}

在您要添加值的活动中，只需使用以下代码即可。

db.addGame(new GameModel(yourvalue, yourvalue,yourvalue,yourvalue));

我相信它会添加到您的sqlite中。

将表加载到Sqlite数据库中

2 个答案: