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https://bbs.tsingfun.com/thread-1777-1-1.html 

按键可见性的延时设置 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

大家好,咨询请教一个问题, APP上面的 按键 当按下一个按键 设置2号按键可见性为假 (这个功能可以实现),但 在设定时间内,比如一个小时,或者更长时间后, 让原先的2号按键的可见性从原来的假 恢复成真 用“计时...
https://bbs.tsingfun.com/thread-2018-1-1.html 

请问输入文件要往哪放? - App应用开发 - 清泛IT社区,为创新赋能!

...看文件)理论上,读写方法都是这样写路径,如果运行有问题,请贴出具体的报错截图。 2、更强大的文件管理功能,可以使用FileTools拓展:https://www.fun123.cn/reference/components/storage.html#FileTools 3、如果仅仅是为了App退出保存一些...
https://bbs.tsingfun.com/thread-2079-1-1.html 

用post请求返回的值应该怎么取特定键对应的值呢 - App应用开发 - 清泛IT社...

...,但是用这个代码试了很多次都是未找到,不知道哪里出问题了,求解答 这个我晚些时候会看一下,但是有空的话也请为社区贡献一些力量,比如发帖分享一些自己的经验、心得等内容,感谢{:8_348:}
https://bbs.tsingfun.com/thread-2364-1-1.html 

想试着做一个间歇运动的计时器 - App应用开发 - 清泛IT社区,为创新赋能!

... 2025-05-08 23:37 编辑 用deepseek生成了代码 使用AI2 遇到了问题 to formatTime seconds   set minutes to (seconds / 60)   set secs to (seconds - (minutes * 60))   return join strings( padZero(minutes), ":", padZero(secs) ) to padZero num ...
https://bbs.tsingfun.com/thread-2438-1-1.html 

Modbus硬件控制01——什么是Modbus - 创客硬件开发 - 清泛IT社区,为创新赋能!

...再回复;如果不一样,说明你这个数据在传输的时候出了问题,数据不对的,所以就抛弃了。 2、实战只谈理论大家可能不太明白,下面举一个例子。Modbus-RTU协议一般我们用的最多功能码就是03和06,大部分都是用modbus来查询传...
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java.net.ConnectException: Connection refused

...droid emulator by specifying proper URL like http://localhost/my_api/login.php . And I was getting connection refused error" Point to note - When I just went to browser on the PC and use the same URL (http://localhost/my_api/login.php) I was getting correct response so the Problem in my case was t...
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BLE UUID是对的但连接闪退:java.lang.IllegalArgumentException: UUID str...

...attAttributes.java:33) ... 10 more ---------------- 经过调查,问题出在如下报错中的“uuid string too large”上,java内置的UUID中的函数。 通过调查发现是由于ble拓展编译平台(java8),和目前appinventor with sdk34 平台(java11) 对这个函数...
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How to send a header using a HTTP request through a curl call?

... In PHP: curl_setopt($ch, CURLOPT_HTTPHEADER, array('HeaderName:HeaderValue')); or you can set multiple: curl_setopt($ch, CURLOPT_HTTPHEADER, array('HeaderName:HeaderValue', 'HeaderName2:HeaderValue2')); ...
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How to define an empty object in PHP

...(); A comment in the manual sums it up best: stdClass is the default PHP object. stdClass has no properties, methods or parent. It does not support magic methods, and implements no interfaces. When you cast a scalar or array as Object, you get an instance of stdClass. You can us...
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Is there a PHP Sandbox, something like JSFiddle is to JS? [closed]

Is there a PHP Sandbox, something like JSFiddle is to JS? 1 Answer 1 ...