android：sqlite的使用（讀取res/raw的db文件）一種方法

 1、

public static final String		DATABASE_FILENAME	= "stock.db";				// 這個是DB文件名字
	public static final String		PACKAGE_NAME		= "com.huaxa.it.tuling";	// 這個是自己項目包路徑

	public static final String		DATABASE_PATH		= android.os.Environment.getExternalStorageDirectory().getAbsolutePath()+"/"
																 +PACKAGE_NAME;	// 獲取存儲位置地址

2、將res/raw的db文件讀取出來，然後在手機某個目錄下並生成db文件

private SQLiteOpenHelper		sqlHelper;
	private static SQLiteDatabase	database;
	private String					name				= "";						// 股票搜索出來的代碼
	static String databaseFilename = DATABASE_PATH + "/" + DATABASE_FILENAME;
	public static SQLiteDatabase openDatabase(Context context)
	{
		try
		{
//			String databaseFilename = DATABASE_PATH + "/" + DATABASE_FILENAME;
			File dir = new File(DATABASE_PATH);
			if (!dir.exists())
			{
				dir.mkdir();//新建文件
			}
			if (!(new File(databaseFilename)).exists())
			{
				InputStream is = context.getResources().openRawResource(
						R.raw.stock);
				FileOutputStream fos = new FileOutputStream(databaseFilename);
				byte[] buffer = new byte[8192];
				int count = 0;
				while ((count = is.read(buffer)) > 0)
				{
					fos.write(buffer, 0, count);
				}

				fos.close();
				is.close();
			} 
			database = SQLiteDatabase.openOrCreateDatabase(databaseFilename,
					null);
			return database;
		} catch (Exception e)
		{
			e.printStackTrace();
		}
		return null;
	}

3、操作數據庫

// 獲取股票代碼
	public void getGuPiaoDaiMA(String str)
	{

		SQLiteDatabase db = openDatabase(this); 
		Cursor c = db.rawQuery("select * from db where name=?" ,new String[]{"南方航空"});//此處的db是表名，name是列名  
		c.moveToFirst(); 
		while (!c.isAfterLast())
		{
			name = c.getString(c.getColumnIndex("代碼")); 
			c.moveToNext();
		}
	}