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AppInventor2 二进制文件的读写 - App Inventor 2 中文网 - 清泛网 - 专注C/C++及内核技术
AppInventor2 二进制文件的读写蓝牙客户端或 ble 都可以接收二进制数组，返回的数据是列表：如果想要保存二进制到文件，可以考虑转换成 ascii 或 base64 化，然后通过文件管理器保存为文件，具体请帮助，...蓝牙客户端或 ble 都可...
AppInventor2如何通过socket给网络发16进制的数据？ - App Inventor 2 中文...
...方法，可以赐教吗？软件只能发ASCLL码？没办法收发HEX，蓝牙组件的有写字节功能，TCP网络组件没有。答：发送文本消息时，hexaStringMode 问：app inventor的给网络发16进制指令的方法，可以赐教吗？软件只能发ASCLL码？没办法收发H...
Need android.permission.BLUETOOTH_SCAN permission for android.content....
...旧版本的BluetoothLE拓展导致的问题，临时解决是弄一个“蓝牙客户端”组件，请求蓝牙扫描权限就能临时绕过。
当然，使用最新版本的拓展，应该就没有问题了。最新的拓展已经支持安卓14：https://www.fun123.cn/reference/iot/blue...
Error Code: 2013. Lost connection to MySQL server during query
I got the Error Code: 2013. Lost connection to MySQL server during query error when I tried to add an index to a table using MySQL Workbench.
I noticed also that it appears whenever I run long query.
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Why am I getting ibtool failed with exit code 255?
All of a sudden I can't build my project. I get the following compiler error:
33 Answers
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socks5代理工作流程及技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...程图为：
二、socks5协议交互过程
2.1 基于TCP的客户端连接过程
第一步，客户端向代理服务器发送代理请求，其中包含了代理的版本和认证方式：
+----+----------+----------+
|VER | NMETHODS | METHODS |
...
Why is @font-face throwing a 404 error on woff files?
... site and it works/looks great. Except Firefox and Chrome will throw a 404 error on the .woff file. IE does not throw the error. I have the fonts located at the root but I've tried with the fonts in the css folder and even giving the entire url for the font. If remove those fonts from my css file ...
【解决】Error 701: Unable to load xxx.xxx - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
Error 701: Unable to load xxx.xxx
比如：
【解决】：连接菜单 -> 重置连接。然后再重新连接一次AI伴侣进行测试，就能解决。
【原理】：在AI伴侣已经连接好之后，访问才刚上传的某资源，就会报这个错误。因为资源不会自...
Converting a Java Keystore into PEM Format
... "openssl pkcs12 -in foo.p12 -out foo.pem" throws the following error Enter Import Password: MAC verified OK Error outputting keys and certificates 139848775526048:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt:evp_enc.c:539: 139848775526048:error:23077074:PKCS12...
ViewDidAppear is not called when opening app from background
...13-04-07 09:31:06.505 myapp[15459:11303] view did load
2013-04-07 09:31:06.507 myapp[15459:11303] view will appear
2013-04-07 09:31:06.511 myapp[15459:11303] app did become active
2013-04-07 09:31:06.512 myapp[15459:11303] did become active notification
2013-04-07 09:31:06.517 myapp[15459:11303] vie...