Android中ZXing条形码库的使用

1.在项目中引入zxing

#模块下的 build.gradle文件的dependencies中
implementation 'com.journeyapps:zxing-android-embedded:4.3.0'

#在settings.gradle下添加mavern仓库
dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        google()
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

2.修改AndroidManifest

#在application中增加一个 activity标记
<activity
           android:name="com.journeyapps.barcodescanner.CaptureActivity"
           android:screenOrientation="fullSensor"
           tools:replace="screenOrientation" />

3. 在activity中使用

//Zxing扫码回调
private final ActivityResultLauncher<ScanOptions> barcodeLauncher = registerForActivityResult(new ScanContract(),
    result -> {
        if(result.getContents() == null) {
            Toast.makeText(MainActivity.this, "取消扫描~", Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(MainActivity.this, "扫描成功！", Toast.LENGTH_LONG).show();
            String result = result.getContents();
        }
});

//点击事件
public void scanner(View view){
    ScanOptions options = new ScanOptions();
    options.setDesiredBarcodeFormats(ScanOptions.ONE_D_CODE_TYPES);
    options.setPrompt("扫描条码");
    options.setCameraId(0);
    options.setBeepEnabled(false);
    barcodeLauncher.launch(options);
}