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js/php判断终端类型:PC访问、手机访问、微信访问 - 更多技术 - 清泛网 - ...

...也可以在前端用js来判断访问终端,代码如下:<script>function GetQueryString(name) { var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); v 一般也可以在前端用js来判断访问终端,代码如下: <script> function GetQueryString(name) { var reg = ne...
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App Inventor 2 连接打印机(Printer),自定义打印的实现 - App Inventor ...

...看到,安卓平台只能通过分享文件才能选择打印机App,而iOS版AI伴侣在分享消息时就可以直接预览打印消息内容,如下图: iOS版分享消息 打印功能实现思路: 由于安卓平台分享消息的方式无法调出打印App,只能通过...
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2024 全“心”出发 -- 全新App Inventor 2 移动社区开启新征程 - App Inven...

...用App Inventor 2 开发、定位商业级的App,当然短期内是无缘iOS平台了(官方支持iOS照目前看还需很久)。 最后,不论您是会员还是普通用户,我们都将秉承教育者的初心,致力于普及App Inventor 2 技术,让更多人能够轻松开发自...
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ble 蓝牙透传代码怎么写? - 创客硬件开发 - 清泛IT社区,为创新赋能!

...特征id。 可以做到透传,不过要换透传 id,这个 id 是 io 控制口 晚一些我给你一下 透传 id。 --------- 透传的服务id:SERVICE_UUUID = UUID.fromString(&quot;0000fff0-0000-1000-8000-00805f9b34fb&quot;); 向ble写数据的特征id: WRITE_UUUID = UUID.from...
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Plyr视频播放器拓展:全屏、画质、字幕、缩略图、强大的用户界面 - App Inv...

...出。您可以在个人和商业项目中自由使用它。它基于 Plyr.io 功能 支持缩略图 支持直播 支持 M3U8 文件 支持多种字幕 支持多种视频质量 支持缓存 流畅的视频加载 响应式设计 支持本地文件 离线工作 还有更多功能即将...
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Async Procedures 拓展:异步任务拓展,异步处理耗时任务 - App Inventor 2...

Async ProcAsync Proc is an Extension which you can use to run a Procedure asynchronously. You no longer have to wait for a loop to finish and don’t worry about your app Crashing due to Android System thinking that your app crashed while doing intense processes.BLOCKS:EVENTS : [color=var(--tertiar...
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How to read a large file - line by line?

...with statement handles opening and closing the file, including if an exception is raised in the inner block. The for line in f treats the file object f as an iterable, which automatically uses buffered I/O and memory management so you don't have to worry about large files. There should be one --...
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Redefining NULL

...L pointer will remain undetected and at the same time cause dangerous behaviour. 7 Answers ...
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PCH File in Xcode 6

In my previous projects, I can find the .pch file under Supporting Files. 6 Answers ...
https://www.fun123.cn/reference/iot/MQTT.html 

App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网

...《App Inventor 2 MQTT拓展入门(保姆级教程)》 最新版拓展下载: de.ullisroboterseite.ursai2pahomqtt.aix MQTT(Message Queuing Telemetry Transport:消息队列遥测传输) MQTT 发明于 1999 年,为物联网设计的轻量级协议,基于TCP协议实现。 M...