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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）：...
【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...
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。
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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...
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。
Using openssl to get the certificate from a server
I am trying to get the certificate of a remote server, which I can then use to add to my keystore and use within my java application.
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How do you clear the SQL Server transaction log?
...n FULL recovery mode. If not, then make sure it is:
ALTER DATABASE testdb SET RECOVERY FULL;
Even if you are taking regular full backups, the log file will grow and grow until you perform a log backup - this is for your protection, not to needlessly eat away at your disk space. You should be perf...
Trees in Twitter Bootstrap [closed]
I have been trying to work on creating a tree (like a directory tree) that uses as much CSS and as little JS as possible (only for states, etc), and I want to know if there are some good existing tree plugins for bootstrap or jquery-ui bootstrap .
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Query an XDocument for elements by name at any depth
I have an XDocument object. I want to query for elements with a particular name at any depth using LINQ. When I use Descendants("element_name") , I only get elements that are direct children of the current level. What I'm looking for is the equivalent of "//element_name" in XPath...should I ju...
how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
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How to match “anything up until this sequence of characters” in a regular expression?
Take this regular expression: /^[^abc]/ . This will match any single character at the beginning of a string, except a, b, or c.
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