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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...和广播
扫描
详细接入步骤：
开始扫描 -> 获取BLE设备列表 -> 连接指定设备（也可指定MAC地址连接）-> 设备指定服务uuid和特征uuid 发送 / 接收 数据。
广播
现在常规便宜芯片并无蓝牙协议栈，只能通过人工拼包用最简单的...
What is makeinfo, and how do I get it?
...d Sep 4 '19 at 21:25
Samuel LelièvreSamuel Lelièvre
1,74388 silver badges1414 bronze badges
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How to find the foreach index?
... edited Dec 14 '17 at 3:16
buræquete
12.5k44 gold badges3131 silver badges6262 bronze badges
answered Sep 26 '08 at 18:25
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通信连接组件 · App Inventor 2 中文网
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Extras
返回将作为额外数据传递给Activity活动的键值对列表。
结果
返回Activity活动的结果。
结果名称
指定一个名称，用于从Activity活动中获取结果。
结果类型
从Activity活动中返回的结果 MIME 类型。
结果URI地址
从A...
制作列表 · App Inventor 2 中文网
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制作列表
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什么是列表？
很多应用程序需要使用数据列表。例如，一款游戏可能会保存一份高分列表，社交应用会保存一份好友列...
Android: Is it possible to display video thumbnails?
...ed Mar 9 '16 at 23:33
Edouard BrèthesEdouard Brèthes
93299 silver badges2424 bronze badges
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How to add a button to UINavigationBar?
...red Mar 23 '10 at 23:45
Mads MobækMads Mobæk
29.5k2020 gold badges6464 silver badges7575 bronze badges
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Why does the PHP json_encode function convert UTF-8 strings to hexadecimal entities?
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This also works with Danish letters Æ,æ,Ø,ø,Å,å Thank you!
– ymerdrengene
Jan 22 '16 at 11:23
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Can jQuery read/write cookies to a browser?
Simple example: I want to have some items on a page (like divs or table rows), and I want to let the user click on them to select them. That seems easy enough in jQuery. To save which items a user clicks on with no server-side post backs, I was thinking a cookie would be a simple way to get this don...
Limit the length of a string with AngularJS
... the "...". The result should be: "My String..."
– Snæbjørn
Sep 2 '14 at 13:37
I'm not seeing the ellipsis here: pln...