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AsyncProcedures异步过程扩展 · App Inventor 2 中文网

...原则 避免UI操作: 异步过程中避免直接操作UI组件 合理拆分: 将大任务拆分为适当大小的异步任务 错误处理: 为异步过程添加适当的错误处理机制 2. 性能优化 控制并发: 避免同时运行过多的...
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iPhone App 开发第一步:从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...

...&mode=download 3、之后把iTunes升级到10.6以上版本,其它软件组件勿升级,即只下载iTunes最新版安装即可,否则可能系统白装。不升级iTunes的后果是,插上iPhone无反应,不识别。 4、网上学习如何在XCode中写一个HelloWorld,并在iOS 5.0...
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What does collation mean?

...need to be sorted as if they were different letters - e.g. e,ë,é,ě, and è might be distinct letters for the purposes of ordering (but possibly the same letter when searching, damn those crazy Europeans ;)). – Piskvor left the building Dec 27 '10 at 12:59 ...
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Android 4.3 Bluetooth Low Energy unstable

...w Energy (testing on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that device or any other device again. ...
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App Inventor 2 打造个性化酷炫的底部导航条 · App Inventor 2 中文网

...制字体 注:可以在导航条的切换事件中通过同一屏幕组件的显示和隐藏来完成UI的切换,多屏幕通信较为复杂且导航条必须每个屏幕都要有,因此还是推荐同一屏幕模拟完成多屏操作,更多请参考《构建具有多个屏幕的应用...
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App Inventor 2 OCR 图片文字识别全方案总结 · App Inventor 2 中文网

...100次,超过的话是收费的。根据相关文档、使用Web客户端组件进行通信。这里只讨论技术方案,暂不提供具体的步骤及代码。 当然类似的api不光能识别文字,还能识别物品等,AI相关的功能几乎都能找到云端的解决方案,比较...
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App Inventor 2 ECharts 拓展:基于 ECharts 强大的个性化数据图表展示 · ...

...emo.aia 注:2个拓展是共一个.aix拓展文件,里面分2个拓展组件,导入.aix效果如下: ECharts.js 图表库非常的丰富,只有你想不到没有它做不到的! 不过目前我们开发的种类有限,如果你有其他图表展示的需求,欢迎与我们进行...
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Setting the correct encoding when piping stdout in Python

...at you receive, and encode what you send. # -*- coding: utf-8 -*- print u"åäö".encode('utf-8') Another didactic example is a Python program to convert between ISO-8859-1 and UTF-8, making everything uppercase in between. import sys for line in sys.stdin: # Decode what you receive: lin...
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[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...

...cheme is dark */ /* user picked a theme a light scheme and also enabled a dark scheme */ /* deal with light scheme first */ @media (prefers-color-scheme: light) { :root { --primary: #222222; --secondary: #ffffff; --tertiary: #008...
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低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 - App Inventor 2 中文网 - 清泛...

BLE 和 SPP 怎么选?看应用场景:BLE适用于低功耗、轻量级的应用,例如穿戴设备、传感器网络等。而SPP适用于需要大容量数据传输的应用,例如音频设备、文件传输等。看功耗需求:如果你的应用对功耗有严格要求,需要长...