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README
Apache-2.0

WeChatQRCode

Download MavenCentral JitPack CI CircleCI API License

WeChatQRCode 一个基于OpenCV开源的微信二维码引擎移植封装的二维码识别库。

又一个扫码相关的轮子,之所以说又,是因为这样的轮子已经开源三个了;几个轮子之间的优缺点,各有千秋,请自寻选择(小孩子才做选择)。

基于ZXing的扫码轮子 ZXingLite

基于MLKit的扫码轮子 MLKit

基于OpenCV的扫码轮子 WeChatQRCode

GIF 展示

GIF

你可以直接下载 演示App 体验效果

各Module相关说明

app

示例App:主要用于提供WeChatQRCode的演示效果

opencv

OpenCV:编译好的OpenCV

opencv-armv7a

OpenCV:armeabi-v7a 的libopencv_java4.so

opencv-armv64

OpenCV:arm64-v8a 的libopencv_java4.so

opencv-x86

OpenCV:x86 的libopencv_java4.so

opencv-x86_64

OpenCV:x86_64 的libopencv_java4.so

opencv-qrcode

OpenCV二维码识别:封装好的API,通过 OpenCVQRCodeDetector 你可以很轻松的拥有OpenCV中开源的二维码识别功能

opencv-qrcode-scanning

OpenCV二维码扫码:有了上面的OpenCV二维码识别功能,基本的扫码相关界面还是需要有个的,扫码加识别完美搭配;

opencv-qrcode-scanning 相当于CameraScan的衍生库。

wechat-qrcode

微信二维码识别:封装好的API,通过 WeChatQRCodeDetector 你可以很轻松的拥有OpenCV中开源的微信二维码识别功能

wechat-qrcode-scanning

微信二维码扫码:有了上面的微信二维码识别功能,基本的扫码相关界面还是需要有个的,扫码加识别完美搭配;

wechat-qrcode-scanning 相当于CameraScan的衍生库。

Java版本(点击查看java分支)

引入

Gradle:

  1. 在Project的 build.gradlesetting.gradle 中添加远程仓库

    repositories {
        //...
        mavenCentral()
    }
  2. 在Module的 build.gradle 里面添加引入依赖项

    // OpenCV基础库(*必须)
    implementation 'com.github.jenly1314.WeChatQRCode:opencv:2.1.0'
    implementation 'com.github.jenly1314.WeChatQRCode:opencv-armv7a:2.1.0'
    
    // OpenCV的其他ABI(可选),根据你的需要选择想要支持的SO库架构
    implementation 'com.github.jenly1314.WeChatQRCode:opencv-armv64:2.1.0'
    implementation 'com.github.jenly1314.WeChatQRCode:opencv-x86:2.1.0'
    implementation 'com.github.jenly1314.WeChatQRCode:opencv-x86_64:2.1.0'
    
    // OpenCV二维码识别功能(可选)
    implementation 'com.github.jenly1314.WeChatQRCode:opencv-qrcode:2.1.0'
    // OpenCV二维码扫码功能(可选)
    implementation 'com.github.jenly1314.WeChatQRCode:opencv-qrcode-scanning:2.1.0'
    
    // 微信二维码识别功能(可选)
    implementation 'com.github.jenly1314.WeChatQRCode:wechat-qrcode:2.1.0'
    // 微信二维码扫码功能(可选)
    implementation 'com.github.jenly1314.WeChatQRCode:wechat-qrcode-scanning:2.1.0'
    

温馨提示

关于WeChatQRCode版本与编译的SDK版本要求

使用 v2.1.x 以上版本时,要求 compileSdkVersion >= 34

使用 v2.0.x 以上版本时,要求 compileSdkVersion >= 33

如果 compileSdkVersion < 33 请使用 v1.x版本

ABI过滤

在Module的 build.gradle 里面的 android{} 中设置支持的 SO 库架构(可选,支持多个平台的 so, 支持的平台越多,APK体积越大)

 defaultConfig {
 
     //...
     
     ndk {
         //设置支持的 SO 库架构(开发者可以根据需要,选择一个或多个平台的 so)
         abiFilters 'armeabi-v7a' // , 'arm64-v8a', 'x86', 'x86_64'
     }
 }

使用

初始化

初始化 OpenCVWeChatQRCodeDetector (建议在 MainActivityonCreate 方法中进行初始化)

初始化OpenCV

使用版本 >= v2.1.0时,初始化OpenCV方式

//初始化OpenCV
OpenCV.initOpenCV()

使用版本 < v2.1.0时,初始化OpenCV方式

//初始化OpenCV
OpenCV.initAsync(context)

初始化WeChatQRCodeDetector

在初始化OpenCV后,就可以立即初始化WeChatQRCodeDetector了。

//初始化WeChatQRCodeDetector
WeChatQRCodeDetector.init(context)

识别二维码

WeChat QRCode

识别二维码 (wechat-qrcode中的WeChatQRCodeDetector)

//识别二维码;results是一个List<String>集合,可能会有多个结果,如果只识别一个码,可以取List中第0个就可以
val results = WeChatQRCodeDetector.detectAndDecode(bitmap)

识别二维码并返回二维码位置信息 (wechat-qrcode中的WeChatQRCodeDetector)

// 检测结果:二维码的位置信息
val points = ArrayList<Mat>()
//通过WeChatQRCodeDetector识别图片中的二维码并返回二维码的位置信息
val result = WeChatQRCodeDetector.detectAndDecode(bitmap, points)
points.forEach { mat ->
  // 扫码结果二维码的四个点(一个矩形)
  Log.d(TAG, "point0: ${mat[0, 0][0]}, ${mat[0, 1][0]}")
  Log.d(TAG, "point1: ${mat[1, 0][0]}, ${mat[1, 1][0]}")
  Log.d(TAG, "point2: ${mat[2, 0][0]}, ${mat[2, 1][0]}")
  Log.d(TAG, "point3: ${mat[3, 0][0]}, ${mat[3, 1][0]}")
}

OpenCV QRCode

识别二维码 (opencv-qrcode中的OpenCVQRCodeDetector)

val openCVQRCodeDetector = OpenCVQRCodeDetector()
//识别二维码
val results = openCVQRCodeDetector.detectAndDecode(bitmap)

识别二维码并返回二维码位置信息 (opencv-qrcode中的OpenCVQRCodeDetector)

// 检测结果:二维码的位置信息
val points = Mat()
//通过WeChatQRCodeDetector识别图片中的二维码并返回二维码的位置信息
val result = openCVQRCodeDetector.detectAndDecode(bitmap, points)
// 扫码结果二维码的四个点(一个四边形);需要注意的是:OpenCVQRCode识别的二维码和WeChatQRCode的识别的二维码记录在Mat中的点位方式是不一样的
Log.d(TAG, "point0: ${points[0, 0][0]}, ${points[0, 0][1]}")
Log.d(TAG, "point1: ${points[0, 1][0]}, ${points[0, 1][1]}")
Log.d(TAG, "point2: ${points[0, 2][0]}, ${points[0, 2][1]}")
Log.d(TAG, "point3: ${points[0, 3][0]}, ${points[0, 3][1]}")

完整示例

通过继承 wechat-qrcode-scanning 中的 WeChatCameraScanActivity或者WeChatCameraScanFragment可以很轻松的实现扫码功能

class WeChatQRCodeActivity : WeChatCameraScanActivity() {

    override fun onScanResultCallback(result: AnalyzeResult<List<String>>) {
        if (result.result.isNotEmpty()) {
            // 停止分析
            cameraScan.setAnalyzeImage(false)
            Log.d(TAG, result.result.toString())
            // 当初始化 WeChatScanningAnalyzer 时,如果是需要二维码的位置信息,则可通过 WeChatScanningAnalyzer.QRCodeAnalyzeResult 获取
            if (result is WeChatScanningAnalyzer.QRCodeAnalyzeResult) { // 如果需要处理结果二维码的位置信息

                val buffer = StringBuilder()
                val bitmap = result.bitmap?.drawRect { canvas, paint ->
                    // 扫码结果可能有多个
                    for ((index, data) in result.result.withIndex()) {
                        buffer.append("[$index] ").append(data).append("\n")
                        result.points?.forEach { mat ->
                            // 扫码结果二维码的四个点
                            Log.d(TAG, "point0: ${mat[0, 0][0]}, ${mat[0, 1][0]}")
                            Log.d(TAG, "point1: ${mat[1, 0][0]}, ${mat[1, 1][0]}")
                            Log.d(TAG, "point2: ${mat[2, 0][0]}, ${mat[2, 1][0]}")
                            Log.d(TAG, "point3: ${mat[3, 0][0]}, ${mat[3, 1][0]}")

                            val path = Path()
                            path.moveTo(mat[0, 0][0].toFloat(), mat[0, 1][0].toFloat())
                            path.lineTo(mat[1, 0][0].toFloat(), mat[1, 1][0].toFloat())
                            path.lineTo(mat[2, 0][0].toFloat(), mat[2, 1][0].toFloat())
                            path.lineTo(mat[3, 0][0].toFloat(), mat[3, 1][0].toFloat())
                            path.lineTo(mat[0, 0][0].toFloat(), mat[0, 1][0].toFloat())
                            // 将二维码位置在图片上框出来
                            canvas.drawPath(path, paint)
                        }
                    }
                }

                val config = AppDialogConfig(this, R.layout.qrcode_result_dialog).apply {
                    content = buffer
                    onClickConfirm = View.OnClickListener {
                        AppDialog.INSTANCE.dismissDialog()
                        // 继续扫码分析
                        cameraScan.setAnalyzeImage(true)
                    }
                    onClickCancel = View.OnClickListener {
                        AppDialog.INSTANCE.dismissDialog()
                        finish()
                    }
                    val imageView = getView<ImageView>(R.id.ivDialogContent)
                    imageView.setImageBitmap(bitmap)
                }
                AppDialog.INSTANCE.showDialog(config, false)

            } else {
                // 一般需求都是识别一个码,所以这里取第0个就可以;有识别多个码的需求,可以取全部
                val text = result.result[0]
                val intent = Intent()
                intent.putExtra(CameraScan.SCAN_RESULT, text)
                setResult(RESULT_OK, intent)
                finish()
            }

        }
    }

    override fun createAnalyzer(): Analyzer<MutableList<String>>? {
        // 分析器默认不会返回结果二维码的位置信息
//        return WeChatScanningAnalyzer()
        // 如果需要返回结果二维码位置信息,则初始化分析器时,参数传 true 即可
        return WeChatScanningAnalyzer(true)
    }

    companion object {
        const val TAG = "WeChatQRCodeActivity"
    }

}

更多完整示例如下:

wechat-qrcode-scanning

扫描识别二维码实现示例:通过直接继承 WeChatCameraScanActivity 实现的示例 WeChatQRCodeActivity

扫描识别多个二维码实现示例:通过直接继承 WeChatCameraScanActivity 实现的示例 WeChatMultiQRCodeActivity

opencv-qrcode-scanning

扫描识别二维码实现示例:通过直接继承 OpenCVCameraScanActivity 实现的示例 OpenCVQRCodeActivity

版本变化说明

从2.0.0版本开始 wechat-qrcode-scanningopencv-qrcode-scanning 都是以CameraScan作为基础库去实现具体的分析检测功能,所以关于 CameraScan 的使用和自定义扫码界面布局都完全遵循CameraScan 的使用方式。

关于CameraScan的使用,你可以直接去看CameraScan的使用说明;

关于扫描框动画,你可以查看ViewfinderView的使用说明;

2.x版本的变化

1.x2.x 主要变化如下:

  • 1.x版本中 wechat-qrcode-scanningopencv-qrcode-scanning 默认依赖的 mlkit-camera-core 被移除了;

从2.0.0版本开始 wechat-qrcode-scanningopencv-qrcode-scanning 都改为依赖CameraScan;(CameraScan是一个独立的库,单独进行维护)

从2.0.0版本开始 wechat-qrcode-scanningopencv-qrcode-scanning 都已默认依赖 ViewfinderViewViewfinderView

从2.0.0版本开始 OpenCVCameraScanActivityWeChatCameraScanActivity 默认布局包含了扫描动画 ViewfinderView 和手电筒按钮,集成步骤更简单。

基于以上两点主要差异:2.x的主要使用方式和1.x基本类似,部分细节有所变更。

如果你是从 1.x 版本升级至 2.x 版本,那么你需要知道上面所说的差异;特别是独立出去单独维护的库,其包名都有所变化,这一点需要注意一下,大部分变动只需变更导入的包名即可完成升级。

如果你使用的是1.x版本的话请直接查看v1.x分支版本

2.x版本的使用

2.x版本的实现主要是以CameraScan作为基础库去实现具体的分析检测功能,所以你可以直接去看CameraScan的使用说明,只要知道了CameraScan的基本使用方式,自然就会使用 wechat-qrcode-scanningopencv-qrcode-scanning了。

二维码扫码识别

下面就列一下 opencv-qrcode-scanningwechat-qrcode-scanning 实现扫二维码功能的核心类;主要包括实现扫描二维码的Analyzer 和便于快速实现扫描检测的 BaseCameraScanActivityBaseCameraScanFragment 的子类。

功能 所属子模块 对应的Analyzer实现 对应的BaseCameraScanActivity子类
二维码扫码识别 opencv-qrcode-scanning OpenCVScanningAnalyzer OpenCVCameraScanActivity/OpenCVCameraScanFragment
二维码扫码识别 wechat-qrcode-scanning WeChatScanningAnalyzer WeChatCameraScanActivity/WeChatCameraScanFragment

更多使用详情,请查看app中的源码使用示例或直接查看 API帮助文档

其他

opencv-qrcode与wechat-qrcode检测识别二维码对比

opencv-qrcode

  • 一次识别单个二维码速度一般;(一次识别多个二维码时有点小问题)
  • 二维码检测的位置信息是一个四边形。

wechat-qrcode

  • 一次能识别多个二维码,识别速度更快;
  • 二维码检测的位置信息是一个矩形。

总结成一句话来说就是:wechat-qrcode 识别速度更快,opencv-qrcode 二维码定位更准。

就目前而言:wechat-qrcode 的优势基本秒杀 opencv-qrcode

以上观点纯属个人测试总结得出;随着版本的迭代,不保证观点与事实的一致性。你也可以直接下载 演示App进行测试比对。

相关推荐

MLKit 一个强大易用的工具包。通过ML Kit您可以很轻松的实现文字识别、条码识别、图像标记、人脸检测、对象检测等功能。

ZXingLite 基于zxing实现的扫码库,优化扫码和生成二维码/条形码功能。

CameraScan 一个简化扫描识别流程的通用基础库。

ViewfinderView ViewfinderView一个取景视图:主要用于渲染扫描相关的动画效果。

版本记录

v2.1.0:2024-1-13

  • 更新OpenCV至v4.9.0
  • 更新CameraScan至v1.1.0
  • 更新compileSdkVersion至34
  • 更新Gradle至v8.0

v2.0.1:2023-9-13

  • 更新CameraScan至v1.0.1
  • 更新ViewfinderView至v1.1.0

v2.0.0:2023-8-14

  • wechat-qrcode-scanningopencv-qrcode-scanning 中移除原依赖(mlkit-camera-core),现改为依赖CameraScan
  • wechat-qrcode-scanningopencv-qrcode-scanning 添加默认依赖ViewfinderView
  • 优化扫描分析过程的性能体验(优化帧数据分析过程)

v1.3.0:2023-4-16

  • 新增OpenCV二维码扫码识别库(opencv-qrcode和opencv-qrcode-scanning)
  • 更新mlkit-camera-core至v1.4.0
  • 更新compileSdkVersion至33
  • 更新Gradle至v7.5

v1.2.1:2023-2-27

  • 优化细节

v1.2.0:2022-8-4

  • 更新OpenCV至v4.6.0

v1.1.1:2021-11-2

  • 优化细节
  • 更新mlkit-camera-core至v1.0.3

v1.1.0:2021-8-6

  • 编译多种ABI支持
  • 更新mlkit-camera-core至v1.0.2

v1.0.0:2021-7-24

  • WeChatQRCode初始版本

赞赏

如果您喜欢WeChatQRCode,或感觉WeChatQRCode帮助到了您,可以点右上角“Star”支持一下,您的支持就是我的动力,谢谢 :smiley:

您也可以扫描下面的二维码,请作者喝杯咖啡 :coffee:

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⛄ 基于OpenCV开源的微信二维码引擎移植的Android扫码识别库 expand collapse
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