utun2/tools/chatgui/zxing-cpp/wrappers/android/README.md

ZXing-C++ Android Library

Install

The easiest way to use the library is to fetch if from mavenCentral. Simply add one of the following two lines

implementation("io.github.zxing-cpp:android:3.1.0")
implementation("io.github.zxing-cpp:android:3.2.0-SNAPSHOT")

to your build.gradle.kts file in the dependencies section. To access the SNAPSHOT version, you also need to add a separate repositories entry in your build.cradle.kts file:

maven { url = uri("https://central.sonatype.com/repository/maven-snapshots/") }

Use

A trivial use case looks like this (in Kotlin):

import zxingcpp.BarcodeReader

var barcodeReader = BarcodeReader()

fun process(image: ImageProxy) {
    image.use {
        barcodeReader.read(it)
    }.joinToString("\n") { result ->
        "${result.format} (${result.contentType}): ${result.text}"
    }
}

Build locally

1. Install AndroidStudio including NDK and CMake (see 'SDK Tools').
2. Open the project in folder containing this README.
3. The project contains 2 modules: zxingcpp is the wrapper library, app is the demo app using zxingcpp.

To build the AAR (Android Archive) from the command line:

$ ./gradlew :zxingcpp:assembleRelease

Then copy zxingcpp/build/outputs/aar/zxingcpp-release.aar into app/libs of your app.