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AppInventor2 二进制文件的读写 - App Inventor 2 中文网 - 清泛网 - 专注C/C++及内核技术
...蓝牙客户端或 ble 都可以接收二进制数组,返回的数据是列表:如果想要保存二进制到文件,可以考虑转换成 ascii 或 base64 化,然后通过文件管理器保存为文件,具体请帮助,...蓝牙客户端或 ble 都可以接收二进制数组,返回的...
图片轮播拓展 - ColinTreeSlideShow - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
...随改变大小)如图(背景颜色可以先设置好):
在添加列表项之前先初始化一下,调用传入一个参数:调用ColinTreeSlideShow1 ▾.RegisterScrollViewhorizontalScrollArrangement给轮播添加图片:调用ColinTreeSlideShow1 ▾.AddPhotopath
事件自动轮播...
AI伴侣的权限问题 - App应用开发 - 清泛IT社区,为创新赋能!
...的一些软件,如下图,它的所有权限是有个读取设备应用列表,不知道这个是不是与附近的蓝牙设备的总开关有什么影响不
接着再去查看单个权限管理,找到设备用用列表选项,在搜索软件里没有搜索到AI伴侣;去到附近...
MIT已升级2.74版本,中文网已完成升级 - App Inventor 2 中文网 - 清泛IT社...
...被拖近并且没有空闲插槽时,文本等块会自动合并并展开列表
将块拖到边缘时工作区会自动滚动
新的渲染引擎
错误修复:
修复 Android 应用编译中的回归问题
修复垃圾桶中的项目可以在启动时加载的问题
修复标题栏不会...
解决 Error 503: The specified address is not a valid Bluetooth MAC add...
...not a valid
Bluetooth MAC address.
原因是地址格式不对,蓝牙列表可能显示不对。大概率是经典蓝牙和 ble 低功耗蓝牙的设备列表处理的方式不对。
本例中就是经典蓝牙,但是用的 ble 的方式显示导致的问题。
App Inventor 2 经典蓝牙(SPP) 硬件接入:hc05 · App Inventor 2 中文网
...而非BLE拓展,必须在手机设置中配对成功才能出现在蓝牙列表中。
注意:
它的波特率是:38400,而非默认的9600。
上电之前按下硬件上的按钮,则进入AT模式,红灯慢闪;不按则默认进入透传模式,红灯快闪,等...
LINQPad [extension] methods [closed]
...er than Environment.UserDomainName+@"\"+Environment.UserName.
Util.WriteCsv
(new: available since LinqPad version v4.45.05 (beta))
Util.WriteCsv (Customers, @"c:\temp\customers.csv");
This will write the content of the table Customers to the CSV file c:\temp\customers.csv. You can also find a...
How to create streams from string in Node.Js?
I am using a library, ya-csv , that expects either a file or a stream as input, but I have a string.
11 Answers
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How to allow download of .json file with ASP.NET
... I added two staticContent mimeMap's, one for JSON (necessary) and one for CSV (redundant, I assumed it was necessary, but the IISExpress applicationConfig already had CSV). Therefore I got this error anytime I tried to access any staticfile: Cannot add duplicate collection entry of type 'mimeMap' w...
How does one reorder columns in a data frame?
...e above question do df2[,c(1,3,2,4)]
If you want to output this file as a csv, do write.csv(df2, file="somedf.csv")
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