#StartScanning

[rev1technologies]

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[harmonyos-next]

HarmonyOS NEXT Practical: QR Code and Scan Code

Objective: To generate a QR code and read its information by scanning the code.

Knowledge points: QRCode： A component used to display a single QR code. interface [code] QRCode(value: string) [/code] value： QR code content string. The maximum support is 512 characters. If exceeded, the first 512 characters will be truncated. Explanation: The string content is guaranteed to be valid and does not support null, undefined, or empty content. When the above content is passed in, an invalid QR code will be generated.

QRCode attribute color： Set the color of the QR code. Default value: '# ff000000'， And it does not follow the system's switching between light and dark modes for modification. backgroundColor： Set the background color of the QR code. Default value: Color.White， Starting from API version 11, the default value has been changed to '#ffffff', and it does not change with the system's light and dark mode switching. contentOpacity： Set the opacity of the color of the QR code content. The minimum and maximum opacity values are 0 and 1, respectively. Value range: [0, 1]. If it exceeds the value range, it will be treated as the default value.

ScanBarcode (default interface scan code) This module provides default interface scanning capability.

ScanResult: Scan code result.

ScanCodeRect: Position information of the code. Using the default scanning interfaces (startScan and startScanForResult) does not return the code position.

Point: Point coordinates, the top left corner of the coordinate system is {0,0}.

ScanOptions: Scanning and code recognition parameters.

ScanResult attribute

ScanType: Code type.

OriginalValue: The result of code recognition content.

ScanCodeRect: Code recognition location information.

CornerPoints: Identify the position information of corner points and return the four corner points of the QR Code.

ScanOptions attribute

ScanTypes sets the scanning type, default scanning is ALL (all code types).

Whether enableMultiMode enables multi code recognition, defaults to false. true： Multi code recognition. false： Single code recognition.

Whether enableAlbum opens an album, defaults to true. true： Open the photo album and scan the QR code. false： Close the photo album and scan the QR code.

scanBarcode.startScanForResult Call the default interface to scan the code by configuring parameters, and use Promise asynchronous callback to return the decoding result. It needs to be called within the lifecycle of the page and components.

scanBarcode.startScan Call the default interface to scan the code by configuring parameters, and use Promise asynchronous callback to return the scan result.

Actual combat:ScanCodeDemoPage [code] import { scanBarcode, scanCore } from '@kit.ScanKit'; import { hilog } from '@kit.PerformanceAnalysisKit'; import { BusinessError } from '@kit.BasicServicesKit';

@Entry @Component struct ScanCodeDemoPage { codeMsg: string = '二维码信息通常为链接，以及json数据' @State getCodeMsg: string = ''

build() { Column({ space: 10 }) { Text('二维码Demo') Text('生成二维码：') QRCode(this.codeMsg).width(140).height(140) Button('扫码').onClick(() => { // 构造启动扫码的入参options let options: scanBarcode.ScanOptions = { scanTypes: [scanCore.ScanType.ALL], enableMultiMode: true, enableAlbum: true }; try { scanBarcode.startScan(options, (error: BusinessError, result: scanBarcode.ScanResult) => { // error回调监听，当扫码过程中出现错误打印报错并返回 if (error) { hilog.error(0x0001, '[Scan Sample]', `Failed to get ScanResult by callback with options. Code: ${error.code}, message: ${error.message}`); return; } hilog.info(0x0001, '[Scan Sample]', `Succeeded in getting ScanResult by callback with options, result is ${JSON.stringify(result)}`); this.getCodeMsg = result.originalValue }); } catch (error) { hilog.error(0x0001, '[Scan Sample]', `Failed to startScan. Code: ${error.code}, message: ${error.message}`); } }) Text('扫码后得到的信息为：') Text(this.getCodeMsg) } .height('100%') .width('100%') .padding({ top: 10, bottom: 10, right: 20, left: 20 })

} } [/code]

[codezup]

Master iOS Core Bluetooth & Location: Complete Guide

class BluetoothManager: NSObject, CBCentralManagerDelegate { private var centralManager: CBCentralManager! private var peripherals: [CBPeripheral] = [] override init() { super.init() centralManager = CBCentralManager(delegate: self, queue: nil) } func startScanning() { centralManager.scanForPeripherals(withServices: nil, options: nil) } func centralManagerDidUpdateState(_ central:…

[cecobaba-blog]

YeahBit PC SpeedUp indir

YeahBit PC SpeedUp v3.1.10 indir, Bilgisayarınızın göz açıp kapayıncaya kadar olan sorunları taramasını sağlayın ve bu güçlü uygulamayı kullanarak daha yüksek performans için onarın. Odanıza benzer şekilde, bilgisayar tozlaşır ve düzgün çalışmasını sağlamak için zaman zaman temizlenmelidir. Başka bir deyişle, sabit disk sürücüsü, gereksiz dosyaları veya performansı etkileyen geçersiz kayıt defterleriyle doldurulur. Neyse ki, Yeahbit PC SpeedUp gibi uygulamalar, bilgisayarınızı yeni gibi iyi hale getirmek için temizlemenize yardımcı olur. En başından itibaren ayırt edilebilir STARTSCAN düğmesi, varsayılan olarak tüm temizleme özellikleri açık olarak basmanızı sağlar. Bu günaha düşen dua sizi bilgisayarınızda kapsamlı bir taramanın yapıldığı bir sonraki adıma götürür. Tespit edilen sorunlar, işlem devam ettikçe görüntülenebilir ve neyin kaldırılacağını veya düzeltileceğini seçme olasılığı bulunur. Tarama tamamlandığında, her şeyi bir düğmeye basarak sabitleyebilirsiniz. Uygulamanın ana penceresi, tüm özelliklerine hızlı erişim sağlayan bir yan panel ile donatılmıştır. Kayıtları, gereksiz dosyaları ve hatta bir parçalayıcı ile kalıcı olarak kaldırılmış dosyaları temizlemek için çeşitli araçlar mevcuttur. Read the full article

[sip2serve]

The Alexa scan skills are working fully on Amazon AWS.

This week saw great advancement on the project.

I am still using the RPi one as I still have not received the Zero W that I have ordered.

The reach out to Amazon and the Raspberry Pi Foundation has yet to yield results, I will let you know how that goes.

I have two skills both of which I wrote in python 3.8, I could at some stage in the future combine the skills into one, vbut for now they are separate one is there to simply grab the next message off the SQS and read it aloud to the user this scan is invoked using ‘Alexa, read scan’. 

The other scan which is called startscan but has has to use the invocation ‘blind scan document’ for this POC, as all the more obvious names have issue with either not being permitted or getting poor success rates when saying them. Some examples such as ‘start scan’ or ‘begin scan’ break tha Amazon invocation syntax rules so are not permitted. using phrases such ‘scan document’ or ‘scan for reading’ regularly gets Alexa to say scanning is not currently available (oh yes it is) or explain how a person would use a flatbed scanner to scan a document, all of which just frustrate the user trying to read their letter through Alexa. I am reader has an idea for the way the invocations should be set please leave a comment below.

The next area that is to receive my attention is how do I simplify the RPi configuration and get it onto the home WIFI network as well as get the IoT client configuration on it. Currently I am investigating using Bluetooth to connect and make the initial configuration.

Time to run...

ciao

Paul

[grabosky]

My Answers to HW1case, Q3

Q3 (33 pts.). Write up your case on your blog with the following subheadings:

The facts of the case

Sun developed the Java language and platform in 1990 .

Sun did not charge commercial users for using the platform, but required those making derivative works from Sun's Java source to obtain a license from Sun.

After Google's purchase of Android in 2005, they tried to license Java technology from Sun.

Sun offered, in hindsight, a fantastic licensing deal of around $50 million

Google rejected the licensing offer from Sun partly out of fear that it would give Sun influence over Android.

Google choose to develop their own compatible version of Java (implement the same interfaces) from scratch.

In Google's rush, general consensus is they used a small number of Sun's propriety java libraries.  They later fully replaced the libraries in question.

Sun believed Google may have infringed on their copyright, but declined to take the matter to court.

Sun was happy Java had found a new avenue of growth in Android and worked to support Java on Android even without a licensing agreement .

Oracle purchased Sun in 2009.

Oracle then decided to pursue a copyright infringement lawsuit against Google over their use of Java in Android seeking around $9 billion.

There have been at least 5 different major legal battles fought on this matter.  The matter is currently before the Supreme Court of the United States.

Analysis

Virtue ethics point of view

Sun is the only company that seemed to be behaving ethically.  They offered Google a reasonable licensing deal and even supported Java on Android without it.

Google behaved unethically.  Why they would spend 10x the 50 million licensing deal with Sun on layers and developing their own implementation I could not say.

Oracle is a patent troll.  Definitely not virtuous.

From a deontological ethics point of view

Google, by all accounts, infringed on Sun's intellectual property.  Regardless of how much or little, this is unethical.

Sun did not break any ethically rulse that I can see

Oracle potentially destabilizing the software industry for a short term payday is unethical.  Reversing the implicit agreement Sun had with the development community for free use of the Java platform is unethical.

From a utilitarian ethics point of view

If Sun's licensing agreement would have prevented Android from launching effectively, then maybe Google's actions could be considered ethical.  Android has been fairly beneficial to society.

My conclusions

In general APIs (function signatures and their general organization), should not be copyrightable. Interoperable software is too important to society.  If Oracle ultimately prevails, the fear is that it will have a serious destructive impact on the US software industry. 

Google committed copyright infringement in the early days of Android, but the value of that infringement was relatively minor and should be nowhere near 9 billion dollars.

Sun distributed Java with the understanding that it was free to use.  In large part because of this understanding, a mountain of code across every conceivable industry was written on the Java platform.  Oracle's attempt to now charge companies for its use should be considered criminal extortion.

Software and software development is not well understood by the legal community or juries.  It is simply impossible to sufficiently explain something so complex in laymen's terms. It frightens me every time a major court case impacting the software development community hits the courts.  Would it be possible to require specialized juries in cases like this?

I would support laws that encouraged interoperability of software components.

Future environment

No doubt future software will be even more complex and involve more interacting components.  Society is becoming even more dependent on technology as it serves a vital function in most aspects of life. If APIs are copyrightable and it is profitable to litigate them, it's going impact the trajectory of software growth and potentially the wellbeing companies providing new and innovative software.  Large companies could buy up as many copyrights as they can and essentially bury new competition in litigation.

Future scenario

Say a company (X) invents a revolutionary new medical device that would save millions.  The software is complex, but a single integral component's interface looks like part of the API to the commercial software offered by another company (Y).  The api for simplicity sakes has the interface methods startScan, endScan, and collectResults.  The similarities were not intentional and merely a product of intuitive functional design.Company Y finds out about the similarities and sues company X.  The court agrees with company Y and the damages awarded drive company X out of business.  Hospitals that invested in this device can no longer use it because it is not supported.  A comparable product will not be introduced for 10 more years.

[cbshearer]

Favorite tweets: In Win10, "wuauclt.exe /detectnow" no longer works. Run the following from elevated command prompt:c:\windows\system32\UsoClient.exe startscan— SwiftOnSecurity i admin windows (@SwiftOnSecurity) November 13, 2017

http://twitter.com/SwiftOnSecurity