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https://bbs.tsingfun.com/thread-1521-1-1.html 

这个墨绿色的标题栏可以换颜色吗? - App Inventor 2 中文网 - 清泛IT社区...

...阅各方资料,确定原生不支持,需要用拓展实现。 TaifunTools(免费,功能强):https://puravidaapps.com/tools.php Device(功能多且复杂):https://community.appinventor.mit.edu/t/free-device-get-device-info/48411 StatusBarTools(简单易用,推荐):...
https://bbs.tsingfun.com/thread-1601-1-1.html 

【解决】Component "com.google.appinventor.components.runtime.Butt...

编译apk报错信息如下: [LoadComponentInfo] INFO: Component "com.google.appinventor.components.runtime.ActivityStarter" does not specify permissionConstraints [LoadComponentInfo] INFO: Component "com.google.appinventor.components.runtime.Button" does not specify permissio...
https://bbs.tsingfun.com/thread-1676-1-1.html 

App Inventor 2 要在界面上做一个电量图标,有什么好的思路吗? - App应用...

...了。 ----------- Q:但是像我们手机上的电量应该不是分N张图片吧? A:你要更细致,做100张图,每一格电量对应一张状态图片,不过跟做10张图、每张代表10格电量,体验上几乎没有差别。 Q:如何获取手机电量数据? A:请...
https://bbs.tsingfun.com/thread-2042-1-1.html 

AppInventor2文本显示框怎样设置换行操作?标签显示可以换行吗? - App应用...

Q:文本显示框怎样设置换行操作?标签显示可以换行吗? A:文本输入框可切换多行显示模式,勾选“允许多行”即可: 标签也可以显示多行内容,文本中拼接\n就能实现换行。
https://bbs.tsingfun.com/thread-2291-1-1.html 

HAXM 安装/启动失败? - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!

报错如下: emulator: Android emulator version 30.3.5.0 (build_id 7033400) (CL:N/A) 127.0.0.1 - - [01/Apr/2025 16:55:37] "GET /echeck/ HTTP/1.1" 200 39 handleCpuAcceleration: feature check for hvf emulator: ERROR: x86_64 emulation currently requires hardware acceleration! CPU accel...
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串口Read不到数据的问题 - 用户反馈 - 清泛IT社区,为创新赋能!

用户发送的是 8n1 的格式,但是ai2的串口貌似不支持这种格式。写串口正常,读串口为空,len为0。 目前经过测试验证,应该是 \n 作为结束符的。发送时,也是。 ai2使用 physicaloid 库完成的串口功能。
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Convert timestamp in milliseconds to string formatted time in Java

... And don't forget. Old SimpleDateFormat can't be used multithreaded. – keiki Apr 1 '16 at 10:30 ...
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if/else in a list comprehension

...x in row] In general, [f(x) if condition else g(x) for x in sequence] And, for list comprehensions with if conditions only, [f(x) for x in sequence if condition] Note that this actually uses a different language construct, a conditional expression, which itself is not part of the comprehensi...
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Cannot create an array of LinkedLists in Java…?

...ment of the array (i.e. each LinkedList ) represents a row of the matrix. And, each element in the LinkedList array represents a column and the stored value. ...
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Transposing a NumPy array

I use Python and NumPy and have some problems with "transpose": 16 Answers 16 ...