QRCard | android application that can scan qrcode calling cards | QRCode Processing library
kandi X-RAY | QRCard Summary
kandi X-RAY | QRCard Summary
An android application that can scan qrcode calling cards and save it to the contacts list.It can also generate qrcode based on user’s information. 名称:QrCard (二维码名片),一个可以制作个人二维码名片和扫描名片二维码的应用。 应用项目的构思: 二维码,是指特定的几何图形按照一定规律在二维方向上黑白相间的图形。与传统的一维码相比,二维码能储存更多的信息,并且可以做到很高的容错率,这使得二维码可以做的有艺术色彩并且还能准确的传达出自己存储的信息。将名片信息存储在二维码上市二维码比较常见的应用之一。目前,很多应用都可以将存储名片信息的二维码扫描解析,以便将名片存入通讯录中,含有该功能的应用有很多,其中就有qq的扫一扫,搜狗手机输入法等几乎是智能手机必备的应用。因此,对于用户来说,可能会有制作自己的名片二维码的需求,所以,此次实验我准备设计实验一个可以制作二维码名片和扫描名片二维码的应用。. 实现各个功能模块所需的技术 扫描二维码和制作二维码的核心算法需要借助开源项目:zxing 。Zxing是一个用Java实现的支持多种平台,多种格式的1D/2D条码图像处理库,可以利用该项目实现二维码的编码和解码。 接受用户输入并存储用户信息的模块利用了安卓sharedPreferences的存储技术,方便对数据进行解析和处理。制作二维码时,用户信息利用vcard3.0格式进行编码,这样就能保证其他应用可以解析出二维码包含的名片信息,需要扫描用户二维码的人不需要安装本应用(需要其他具有扫描二维码功能的应用,如qq,微信)就可以获取用户的名片信息,并且把这些信息存入到通讯录中。存储二维码名片的过程中,涉及到了图像文件的读写技术,本应用将生成的用户名片二维码图片存储到/data/data/包名/file/文件夹中,需要存储的数据不会很大(100k左右),不会对用户的系统存储空间造成浪费,相比于存储到sd卡中这种存储方式,避免用户误操作和更换SD卡导致图丢失的情况。 在扫描二维码的过程中,调用zxing提供的CaptureActivity类,并对其进行修改,将扫描结果(一个vcard格式的字符串)利用sharedpreferences进行存储,这样方便对程序进行扩展(如果要扫描其它非名片格式的二维码则不需要再对CaptureActivity进行修改)。解析扫描结果的过程中,利用Java提供的正则表达式的pattern类,由于vcard3,0每行按回车符结尾,将整个字符串按行分开;另外,类型标记与数据之间以冒号进行结尾,再对分开的每个字符串根据冒号分成两个字符串,再根据标记匹配名片的各项信息。存储联系人的过程中,需要通过contentprovider和content Resolver对联系人数据库进行修改,达到增加联系人的目的。 对于启动画面,使用handler进行延迟启动,延迟时间设置为两秒,避免用户进行过长时间的等待。第一次运行的程序介绍的界面由ViewPagerAdapter类实现,WelcomeActivity在滑到最后一张图片时启动MainActivity,启动之后MainActivity写入配置信息,第二次运行时splashActivity判断配置信息使启动WelcomeActivity的条件为假,直接进入MainActivity。.
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Top functions reviewed by kandi - BETA
- Processes a decode message
- Handle a decoded result
- Starts the preview of the camera
- Draws the result bitmap
- Calculates the framing rectangle based on the current settings
- Initializes the GUI
- Loads the local bitmap
- Create the list view
- Creates a CallCard from a String
- Create menu menu menu
- Save a contact
- Create menu item menu
- Handle click
- Called when auto - focus is true
- Get a row
- Called when a preview frame is received
- Reset the image
- Initializes the W welcome window
- Initialize viewfinder
- Set up the splash activity
- Create menu menu menu menu
- Resume the camera
- Returns the original matrix
- Enter Edit card
- Creates a bitmap from a QR Code
- Returns the hardware service
QRCard Key Features
QRCard Examples and Code Snippets
Community Discussions
Trending Discussions on Utilities
QUESTION
I've been upgrading my CRA project to TailwindCSS 3, but now CSS nesting no longer works. Upon starting the server, the console spits out:
...ANSWER
Answered 2022-Feb-03 at 18:38This is mostly just bad news.
Create React App's Tailwind support means that they will detect tailwind.config.js
in the project and add tailwindcss
to their existing postcss
configuration. Source in CRA
The guide that Tailwind offers on their site creates a dummy postcss.config.js
- Making changes in this file does not change the actual postcss configuration. (misleading if anything)
This is a known issue currently - Github discussion on Tailwind support PR between Adam Wathan (Tailwind founder) and Ian Sutherland (CRA maintainer). But it does not seem like there is an intention to be fixed soon.
If you want to use nesting (or any PostCSS plugin really) is to eject from CRA using:
QUESTION
I'm attempting to create an apollo client
plugin for a Nuxt 3
application. It's currently throwing an error regarding a package called ts-invariant
:
ANSWER
Answered 2022-Jan-07 at 01:52Solved by including @apollo/client
and ts-invariant/process
into the nuxt build transpile like so:
QUESTION
Very first try on Nuxt3 via Nuxt3 Starter
I wonder how can I use tailwindcss in Nuxt3 Starter manually.
(Not via @nuxtjs/tailwindcss , because it's for Nuxt2, and not work with Nuxt3.)
I created a blank Nuxt3 project by
...ANSWER
Answered 2021-Oct-04 at 04:17Maybe your problem is because you need a tailwindcss.config.js
.
For this, simply type in the console:
QUESTION
In a fresh Laravel 9 installation, the URL processing from Laravel Mix does not work anymore.
npm outputs the following:
...ANSWER
Answered 2022-Feb-22 at 10:55Actually moving the css imports into resources/js/app.js
solves this problem. However, this results in the imported css to be included in the public/js/app.js
, not the public/css/app.css
.
QUESTION
I'm trying the create a 3D subscene with objects being labelled using Label objects in a 2D overlay. I've seen similar questions to mine on this subject, and they all point to using the Node.localToScene method on the node to be labelled in the 3D space. But this doesn't seem to work for my case. I've taken example code from the FXyz FloatingLabels example here:
The Label objects need to have their positions updated as the 3D scene in modified, which I've done but when I print out the coordinates returned by the Node.localToScene method, they're much too large to be within the application scene, and so the labels are never visible in the scene. I've written an example program that illustrates the issue, set up very similarly to the FXyz sample code but I've created an extra SubScene object to hold the 2D and 3D SubScene objects in order to plant them into a larger application window with slider controls. The 3D scene uses a perspective camera and shows a large sphere with coloured spheres along the x/y/z axes, and some extra little nubs on the surface for reference:
...ANSWER
Answered 2022-Feb-02 at 12:28If you follow what has been done in the link you have posted you'll make it work.
For starters, there is one subScene, not two.
So I've removed these lines:
QUESTION
I am new to angular and was following the documentation to build a basic app.
Node - v14.7.3
npm - 7.22.0
Angular CLI: 12.2.4
OS: win32 x64
@angular-devkit/architect 0.1202.4
@angular-devkit/build-angular 12.2.4
@angular-devkit/core 12.2.4
@angular-devkit/schematics 12.2.4
@schematics/angular 12.2.4
rxjs 6.6.7
typescript 4.3.5
So far all I have done is
npm install @angular/cli
followed by ng new firstApp
and ng serve
Following is the error that I am receiving,
...ANSWER
Answered 2021-Sep-10 at 07:17Try to install those modules separately npm install
:
QUESTION
I've installed tailwind using npm install tailwindcss
I then create my src/style.css file and include
ANSWER
Answered 2021-Dec-25 at 20:47You need to add a config js file for the tailwind engine, inside the config file use content
attribute to define where is your HTML or JS files, the new engine automatically looks inside these files and compiles only the classes that you used.
Check this video for more information:https://youtu.be/mSC6GwizOag?t=22
QUESTION
I am testing a library like follows:
...ANSWER
Answered 2022-Jan-20 at 14:01Here's the equivalent C++20 code to your first version of FromDateTime
:
QUESTION
I'm looking for ways to count the number of trailing newlines from possibly binary data either:
- read from standard input
- or already in a shell variable (then of course the "binary" excludes at least 0x0) using POSIX or coreutils utilities or maybe Perl.
This should work without temporary files or FIFOs.
When the input is in a shell variable, I already have the following (possibly ugly but) working solution:
...ANSWER
Answered 2022-Jan-18 at 13:29Using GNU awk for RT
and without reading all of the input into memory at once:
QUESTION
I want to create dark mode for a web site which use bootstrap. I have to add new root class which includes all boostrap colors. Here is my colors.scss:
...ANSWER
Answered 2021-Aug-07 at 20:32As explained here, there's no way to attach a class to :root
. However, you don't need this to achieve what you want.
Simply make a dark
class then you can add that as desired to the html or body tag.
Make all the needed theme color changes inside .dark{}, and then @import "bootstrap". When .dark
doesn't exist on the body, the theme colors will return to Bootstrap defaults.
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No vulnerabilities reported
Install QRCard
You can use QRCard like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the QRCard component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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