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ImagePicker 图像选择器如何一次选择多张图片? - App Inventor 2 中文网 -...
https://www.fun123.cn/reference/components/media.html#ImagePicker
根据文档最新版本,是可以选多张图片的,但是实际测试下来,一次只能选一张,可能跟安卓版本及手机有关,可能有的手机可以选择多张,纯猜测未验证。英文社区也有相关...
App Inventor接入Supabase:开源免费的后端新选择 - App Inventor 2 拓展 -...
...客户端)
4. 安装Supabase扩展
在 App Inventor中文网(fun123.cn) 下载Supabase扩展组件,导入到项目中。
5. 配置连接
将Supabase URL和API Key填入扩展组件的对应属性中,即可开始使用。
注意事项
关于匿名登录:Supabase默认没...
5分钟了解 App Inventor 2:不会写代码,也能做出自己的 App - App应用开发...
...5分钟。
中文资源在哪?
App Inventor 2 中文网(www.fun123.cn)提供了:
1. 完整的中文文档:所有组件和积木块都有中文说明
2. 离线版:断网也能用,适合学校机房和培训班
3. 扩展组件:MQTT、Supabase、自定义通知等进阶组件...
App Inventor 2 鸿蒙先行版:AppInventor 从此支持全平台,不再安卓专属 - ...
大家好,这里是 App Inventor 2 中文网(fun123.cn)。
今天想和大家聊一个很多人关心、但我们一直比较谨慎的话题——App Inventor 2 的鸿蒙(HarmonyOS NEXT)版本。
————————————————
先说结论
鸿蒙先行版已...
Javascript seconds to minutes and seconds
... var secs = ~~duration % 60;
// Output like "1:01" or "4:03:59" or "123:03:59"
var ret = "";
if (hrs > 0) {
ret += "" + hrs + ":" + (mins < 10 ? "0" : "");
}
ret += "" + mins + ":" + (secs < 10 ? "0" : "");
ret += "" + secs;
return ret;
}
~~ is a sh...
C# member variable initialization; best practice?
...it : base() unless you add something more specific - which could be : base(123, "abc"), or could be : this(123, "abc").
– Marc Gravell♦
Sep 22 '12 at 9:51
...
关于App Inventor 2过程积木,被问最多的6个问题 - App应用开发 - 清泛IT社...
...中遇到具体的过程使用困惑,欢迎在 <a href="https://www.fun123.cn" target="_blank">App Inventor 2 中文社区</a> 发帖讨论。<br><br>更多积木用法可查阅 <a href="https://www.fun123.cn/reference/blocks/procedures.html" target="_blank">App Inventor 2 过程积木文档</a> ...
http HEAD vs GET performance
...EAD might work nicely.
For example, suppose you want to check if resource 123 exists. A 200 means "yes" and a 404 means "no":
HEAD /resources/123 HTTP/1.1
[...]
HTTP/1.1 404 Not Found
[...]
However, if the "yes" or "no" you want from your REST service is a part of the resource itself, rather th...
HTML encoding issues - “” character showing up instead of “&nbsp;”
... answered Jun 5 '14 at 13:50
al123al123
52388 silver badges2424 bronze badges
...
How do I convert Long to byte[] and back in java
...ion methods from Google Guava.
Example:
byte[] bytes = Longs.toByteArray(12345L);
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