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【解答】网络故障：与AI伴侣通信故障 - App Inventor 2 中文网 - 清泛IT社...
...是什么原因？
这里做一个解答：
出现此弹窗是因为App Inventor 2服务器端无法连接到AI伴侣导致的，原因是因为手机上退出了AI伴侣App或者手机锁屏了，都可能导致通信断开。
解决：重来一次测试
1、手机退出AI伴侣后，重...
mobile location - App应用开发 - 清泛IT社区，为创新赋能！
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仅通过手机号没法拿到位置信息，要实现上述功能除App外还要一个服务端，A手机授权GPS并上传定位，B手机上可以从服务端查看A的位置，然后地图展示。也就是不能直接拿到A手机的定位，必须是A安装了App并授权上报位置到...
Does Python have a package/module management system?
...agement system, similar to how Ruby has rubygems where you can do gem install packagename ?
13 Answers
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How to get the current date/time in Java [duplicate]
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@Geek - System.currentTimeMillis() value is approximately UTC, and there is probably a difference (delta) between the local UTC clock and true UTC. System.currentTimeMillis() is independent of the local timezone ... well ... because it is UTC, and UTC is the same irre...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
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Well....Java is actually more portable. Mono isn't implemented everywhere, and it lags behind the Microsoft implementation significantly. The Java SDK seems to stay in better sync across platforms (and it works on more platforms).
I'd also ...
How to install a gem or update RubyGems if it fails with a permissions error
I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system , and it fails with this error:
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Reading settings from app.config or web.config in .NET
...s library that needs to be able to read settings from the web.config or app.config file (depending on whether the DLL is referenced from an ASP.NET web application or a Windows Forms application).
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PHP code is not being executed, instead code shows on the page
...guration, here are a few things you can check:
Make sure that PHP is installed and running correctly. This may sound silly, but you never know. An easy way to check is to run php -v from a command line and see if returns version information or any errors.
Make sure that the PHP module is listed an...
What is an Intent in Android?
...an use to request an action from another app component
An Intent is basically a message to say you did or want something to happen. Depending on the intent, apps or the OS might be listening for it and will react accordingly. Think of it as a blast email to a bunch of friends, in which you tell yo...
Purge or recreate a Ruby on Rails database
...o this:
This will reset your database and reload your current schema with all:
rake db:reset db:migrate
This will destroy your db and then create it and then migrate your current schema:
rake db:drop db:create db:migrate
All data will be lost in both scenarios.
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