1.谷歌api升级到com.google.zxing:core:3.5.2 2.开发sdk升级到34（安卓14） 3.简化使用，新增QRCodeUtil工具类 4.一行代码实现相机扫码解析 5.一行代码实现选择照片并解析 6.一行代码解析bitmap 7.扩张生成二维码的样式和风格，可以在二维码中插入图片
- ZXing
- ahuyangdong https://github.com/ahuyangdong/QrCodeLib
项目工程gradle中添加 当前最新版：————> 1.0.2 
implementation 'com.kotlinx:zxing-lib:1.0.2'//获取权限后打开摄像头扫码
QRCodeUtil.openCamera(activity) {
binding.tvResult.text = it //扫到二维码后解析结果
}
//选择照片并解析二维码
QRCodeUtil.openAlbum(activity) {
binding.tvResult.text = it //选照片后解析结果
}
//生成二维码
var bitmap = QrCodeGenerator.getQrCodeImage("二维码内容", 512, 512)
//或者
var bitmap = QRCodeUtil.encode("二维码内容", 512, 512, "UTF-8", "H", "0", Color.BLACK, Color.WHITE, null, 0F, null)
//解析图片中的二维码
val value = QRCodeUtil.decode(bitmap)?.text注：开摄像头扫码AndroidManifest中需要添加
//举例：获取相机权限后扫码
activityResultRegistry.register("相机权限", ActivityResultContracts.RequestPermission()) {
//没有相机权限
if (!it) return@register Toast.makeText(this, "请打开相机权限", Toast.LENGTH_SHORT).show()
//监听扫码页面返回
activityResultRegistry.register("跳转", ActivityResultContracts.StartActivityForResult()) { result ->
if (result?.resultCode != Activity.RESULT_OK) return@register //没有扫描到二维码
val scanResult = result.data?.extras?.getString(com.google.zxing.util.Constant.INTENT_EXTRA_KEY_QR_SCAN)
//扫码结果
binding.tvResult.text = scanResult
}.run { launch(Intent(this@MainActivity, CaptureActivity::class.java)) }
}.run { launch(Manifest.permission.CAMERA) }
//举例：扫码相册中二维码
activityResultRegistry.register("打开手机中的相册", ActivityResultContracts.StartActivityForResult()) { result ->
if (result?.resultCode != Activity.RESULT_OK) return@register //没有选择照片
val uri: Uri? = result.data?.data
val bitmap = BitmapUtil.decodeUri(this, uri, 500, 500)
val result = QRCodeUtil.decode(bitmap)
if (result == null) {
binding.tvResult.text = ""
return@register Toast.makeText(this, "识别失败", Toast.LENGTH_SHORT).show()
}
//扫码结果
binding.tvResult.text = result.text
}.run { launch(Intent(Intent.ACTION_GET_CONTENT).apply { type = "image/*" }) }