Android 数据库 SQLiteOpenHelper

发布时间：2020-12-15 07:16:30 所属栏目：Java 来源：网络整理

导读：public class DbOpenHelper extends SQLiteOpenHelper { private static String name = "test.db"; /* 数据库名称 */ static int version = 1; 数据库版本号 */ public DbOpenHelper(Context context) { super (context,name, null ,version); // TODO Auto-

public class DbOpenHelper extends SQLiteOpenHelper {

    private static String name = "test.db"; /* 数据库名称 */
    static int version = 1;  数据库版本号 */

    public DbOpenHelper(Context context) {
        super(context,name,null,version);
        // TODO Auto-generated constructor stub
    }

    @Override
    void onCreate(SQLiteDatabase db) {
         TODO Auto-generated method stub

        String sql = "create table person(id integer primary key autoincrement,name varchar(64))";
        db.execSQL(sql);
    }

    @Override
    void onUpgrade(SQLiteDatabase db,1)">int oldVersion,1)">int newVersion) {
        
    }
}

private Button button; @Override protected onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) this.findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override onClick(View v) { DbOpenHelper dbOpenHelper = new DbOpenHelper(MainActivity.); dbOpenHelper.getWritableDatabase(); } }); }

（编辑：李大同）

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