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After using Avfoundation to complete the scan code, there are 2 problems:
1, how to limit the scan range?
2. How is the barcode scanned?
A friend's article helped me, specially transferred, can help the needy friend.
Original: http://www.2cto.com/kf/201411/356046.html
The main reason for writing this article is not to show how to use avfoundati
The main reason for writing this article is not to show how to use avfoundation for QR code scanning, but also to limit the scope of scanning QR code. (Because the default is full screen scanning)The project encountered the function of scanning QR code, here I gave up the use of the three-party library, and the introduction of Apple native scan. The advantage of native is that the scan is particularly fast
:@[AVMETADATAOBJECTTYPEQRCODE]];5. Set the preview layer (let the user see the scan results)Avcapturevideopreviewlayer *preview = [Avcapturevideopreviewlayer layerwithsession:session];_previewlayer = preview;5.1 Setting the properties of the previewpreview.videogravity = Avlayervideogravityresizeaspectfill;5.2 Setting the size of the preview layer[Preview SetFrame:self.view.bounds];5.3 Adding layers to a view's layer[Self.view.layer Insertsublayer:pre
How do I play the Star Wars app?
Use your ID card to draw the outline of the card on the white paper, then follow the characters shown in the center of the card map, and then use the Star Wars app to turn on the camera to display a variety of dynamic pictures. If you are too lazy to draw can be directly with the Star Wars app to scan the image below, the same can
Resolving Oracle clients can connect to 11g RAC VIP, but cannot connect scan IP issues
Some time ago configured a set of HP ux11.31 oracle11g R2 RAC, after the configuration is completed, the client can connect VIP and Scan IP connection database, remote clients can only con
How to parse the result obtained by {code?
Wx. scanQRCode ({needResult: 1, // The default value is 0. the scan result is processed. 1 directly returns the scan result. scanType: ["qrCode", "barCode"], // you can specify whether to scan the QR code or a QR code. by default, both of them have success: function (res) {var
PHP generated android client scan can log in QR code, Android client
The example of this article for everyone to share the PHP page generated two-dimensional code, Android client scan login specific code for your reference, the specific content as follows
Using the Zxing Open Source Library with the sweep code feature on GitHub, the three-step process of generat
Configured in applicationcontext. xml View Source
Print?
1
Context: component-Scan Base-Package="Com. Demo"/>
Before you pack the class into a jar packageProgramAfter the jar package is compiled, the Sping annotation scan fails. How can I configure the class in the package after sp
containing a single integer n (where 1 Next N line would contain five integers x1, y1, x2, y2, value. X1,y1 is Bottomleft point and X2,y2 are TopRight point, value is the value of the Buildings ' unit area. ((0 Outputfor each case. You just ouput the highest value on one line.Sample Input131 1 10 10 44 4 15 5 57 8 20 30 6Sample OutputCase 1:2047Test Instructions: give you n rectangle each rectangle has its own Val, for Coincident area, Val large can
You can use an API to scan a large number of accounts and hit the database. You have obtained the password to log on to the tuhao account to buy two bottles of Red Bull.
How can I change reviewers every day from dark clouds to night? I have reviewed more than 7/8 people.Http://m.ubox.cn/
Brup mounts the mobile phone number dictionary to
For example, this site
Corn Net
Reply content:
For example, this siteCorn Net
/** * @descrpition Attention * @param $request * @return Array */public static function Eventsubscribe (A MP; $request) {$content = ' You are welcome to follow us, will serve you wholeheartedly '; return Responsepassive::text ($request [' Fromusername '], $request [' Tousername '], $content); }/** * @descrpition cancel attention * @param $request * @return Array */public static function Eventunsubs
the rectangle can cover to this point, so that each point corresponds to a segment of equal y, and the original question is converted to the maximum of the number of overlays on x in the interval of height y less than p. You can do this by using the offline operation (scan line) of the line segment tree.1#include 2#include Set>3#include 4#include 5#include 6#inc
The mysqlor condition can be indexed to avoid full table scan of bitsCN.com.
In some cases, the or condition can avoid full table scan.
1. if the where statement contains the or condition, the myisam table can use indexes, but innodb does not.
1) myisam table:
Create t
0x37. Restart the machine.
If it is no longer needed, uninstall Commview for WiFi (and the accompanying driver) and reinstall the latest Atheros Wireless card driver (currently the latest version is 10.0.0.222) or other Atheros wireless card driver.
Pros: Simply complete, you can update the Atheros wireless card driver at any time in the future without changing its channel set.
Disadvantage: Modify the firmware of the wireless card,
there is a risk
[JQuery] use the jquery-qrcode plug-in to convert the URL into a QR code. You can scan the QR code on your mobile phone to access jqueryqrcode.
First, find jquery-qrcode in github and Select Download ZIP to Download (click the link to open)
Download a compressed package jquery-qrcode-master.zip, decompress the package, extract the src folder, and put it in the site directory,
Then, download the latest vers
Failure Analysis: In fact, in the Win7 flagship version of the computer problems, most of it is due to the installation of the fax machine has caused problems, we just reinstall once can solve the problem. Now, let's give a detailed description of the solution:
1. First of all, we click on the Start menu of the Win7 flagship computer and go to the interface of the control Panel, then we click on the control Panel interface to "Control Panel"-"program
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