QR codes are fast and effective ways to access information with minimal effort. Here's how you can use your Android phone's camera to scan any QR code.
cameraHolder.cameraId = CAMERA_REAR//设置后置摄像头启动 cameraHolder.open().invalidate()//启动camera } 定义QRCodeDecoder用于解析二维码数据 这个类还是比较简单的,首先需要生成一个ImageReader对象用于接收camera的preview的数据,然后还需要一个QRCodeReader对象用于解析二维码。我们创建ImageReader的时候需要指定图像的...
String> hints = new Hashtable<EncodeHintType, String>(); 5 hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); 6 //图像数据转换,使用了矩阵转换 7 BitMatrix bitMatrix = new QRCodeWriter().encode(string, BarcodeFormat.QR_CODE, QR_WIDTH...
4. Customize your QR code as per your requirement and download it. Scanning QR Code from Images on Phones is Pretty Easy You can scan a QR code without taking a photo by simply pointing your camera at it; this will read the code and give you the information associated with it. Using ...
首先，因为扫码属于第三方服务，所以要修改模块的build.gradle，往dependencies节点添加如下一行配置，表示...
Android QRCodeReaderView 和Camera API冲突 开发一款小功能,核心功能是二维码扫描,然后发送到远端服务器。App结构分为两个Activity,Activity A 负责二维码扫描,然后将参数存到本地,再启动Activity B,在Activity B中,需要打开前置摄像头拍照。实际代码写好之后, 单独运行A,B都没问题,但是串起来就有问题。
Modern smartphones ship with a built-in feature that enables them to read QR codes without the need for 3rd party apps. All you have to do is open your camera, point the lens at the QR code of interest and a notification will pop up and direct you to the relevant menu. ...
Keep in mind, this issue is not with QR codes in general, but specifically with vcard code placed in the text type of ID to generate QR code. I have tested with an Android 11 (using just camera) and can read all QR codes generated from ID, including plain text i...
3.工程单元中引入"xZXIngQRCode"单元。 4.窗体中写入生成二维码的代码(看博文)。 关于横竖屏的问题 但是android提供的SDK(android.hardware.Camera)里大概不能正常的使用竖屏(portrait layout)加载照相机,当用竖屏模式加载照相机时会产生以下情况:1. 照相机成像左倾90度(倾斜);2. 照相机成像长宽比例不对(失比)...
private void startQrCode() { // 申请相机权限 if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { ... return; } // 申请文件读写权限(部分朋友遇到相册选图需要读写权限的情况,这里一并写一下) ...