android 类写入sharedPreferences

private static void set_share_data(OAuthV2 oAuth) throws IOException { SharedPreferences sharedPreferences = globle_activity .getSharedPreferences("qq_author", Activity.MODE_PRIVATE); ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(oAuth); String productBase64 = new String(Base64.encodeBase64(baos .toByteArray())); Editor editor = sharedPreferences.edit(); editor.putString("qq_auth", productBase64); editor.commit(); } private static OAuthV2 get_share_data() throws StreamCorruptedException, IOException, ClassNotFoundException { SharedPreferences sharedPreferences = globle_activity .getSharedPreferences("qq_author", Activity.MODE_PRIVATE); String productBase64 = sharedPreferences.getString("qq_auth", ""); // 对Base64格式的字符串进行解码 Log.i("get_share_data productBase64", "productBase64:" + productBase64); byte[] base64Bytes = Base64.decodeBase64(productBase64.getBytes()); ByteArrayInputStream bais = new ByteArrayInputStream(base64Bytes); ObjectInputStream ois = new ObjectInputStream(bais); // 从ObjectInputStream中读取Product对象 OAuthV2 oAuth = (OAuthV2) ois.readObject(); return oAuth; }