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https://bbs.tsingfun.com/thread-2035-1-1.html 

高德地图api访问URL出错求助 - App应用开发 - 清泛IT社区,为创新赋能!

...”来分隔不同标注点的话会显示错误呢,我看教程是使用那个来分割不同标注点的啊 可以先用工具(比如 Postman)来测试一下 网络url 的Get/Post 请求情况。 还有,你的测试方式及具体报错请提供一下。App Inventor 2  发表...
https://bbs.tsingfun.com/thread-2223-1-1.html 

AppInventor2能实现不跳转相机直接预览拍照吗? - App应用开发 - 清泛IT社...

Q:那个Taifunlmage怎么设置才能实现相机预览,就是点击按钮直接拍照不跳转相机界面的那种。 A:根据AI回答,CameraX API可以实现,谷歌了一下,TaifuImage官方说了不打算开发这个拓展,因为已经有现成的拓展了,叫:ProCamera...
https://bbs.tsingfun.com/thread-2330-1-1.html 

app inventor 2 怎么进行延迟操作? - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

...单,就是计算好要 sleep 到的时刻,然后一直循环等待到那个时刻为止。测试方法如下: 经过测试,该方法有效,能正常 sleep 指定的毫秒数,但是它是阻塞式的,也就是说等待的过程中其他界面操作均无法进行,不过好在CPU消耗...
https://bbs.tsingfun.com/thread-2877-1-1.html 

iOS Ad Hoc 和 App Store 区别 - App应用开发 - 清泛IT社区,为创新赋能!

... UDID 是无效的。 关键点直接说清楚: 1️⃣ 你刚才那个 UUID 的问题 我给你的这个: A3F1C9E2-7B4D-4E6A-9F2C-1D8B7E5A9C3F ???? 只是标准 UUID 格式(36位) ???? 但不是苹果设备 UDID 2️⃣ 真正的 iPhone UDID 长什么样 苹果设备 U...
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Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout

...ombie?) server (can happen when quitting terminal with server running): $ ps ax | grep rails If it returns something like: 33467 s002 S+ 0:00.00 grep rails 33240 s003 S+ 0:15.05 /Users/Arta/.rbenv/versions/1.9.2-p290/bin/ruby script/rails s -p 3000 kill it, and run anew: $ kill -9 33240 $ rai...
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Filter LogCat to get only the messages from My Application in Android?

I observed that when i use Logcat with Eclipse with ADT for Android, I get messages from many other applications as well. Is there a way to filter this and show only messages from my own application only. ...
https://www.tsingfun.com/down/ebook/49.html 

莱昂氏unix源代码分析 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术

...码分析 PDF莱昂 源代码本书由上、下两篇组成。上篇为UNIX版本6的源代码,下篇是莱昂先生对UNIX操作系统版本6源代码的详细分析。本书语言简洁、透彻,曾作为未公开...本书由上、下两篇组成。上篇为UNIX版本6的源代码,下篇是...
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How to show line number when executing bash script

... You mention that you're already using -x. The variable PS4 denotes the value is the prompt printed before the command line is echoed when the -x option is set and defaults to : followed by space. You can change PS4 to emit the LINENO (The line number in the script or shell funct...
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How to profile a bash shell script slow startup?

...bash.bashrc (or wherever you'd like to begin a trace in any Bash script): PS4='+ $(date "+%s.%N")\011 ' exec 3>&2 2>/tmp/bashstart.$$.log set -x add set +x exec 2>&3 3>&- at the end of ~/.bashrc (or at the end of the section of any Bash script you'd like tracing to stop...
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Your build failed due to an error in the AAPT stage, not because of an...

...不兼容不支持浏览器 - 使用 FireFox、Chrome 或 Safari(版本)互联网连接不是佳的网络防火墙正在阻止 App Inventor 目标设备(例如智能手机)没有设置“允许来自未知来源的应用程序”安全权限集 - 转到设置/应用程序/未知来...