添加依赖
rootDir/build.gradle
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| allprojects {
repositories {
...
google { url 'https://maven.aliyun.com/repository/google' }
}
}
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module/build.gradle
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| dependencies {
api 'com.google.mlkit:barcode-scanning:17.0.0'
}
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扫码工具类
BarcodeScannerProcessor.kt
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| import android.graphics.Bitmap
import android.util.Log
import com.google.mlkit.vision.barcode.Barcode
import com.google.mlkit.vision.barcode.BarcodeScanner
import com.google.mlkit.vision.barcode.BarcodeScanning
import com.google.mlkit.vision.common.InputImage
import java.util.concurrent.Executors
class BarcodeScannerProcessor {
private val barcodeScanner: BarcodeScanner = BarcodeScanning.getClient()
private val executor = Executors.newSingleThreadExecutor()
fun stop() {
barcodeScanner.close()
executor.shutdown()
}
fun processBitmap(bitmap: Bitmap, onNext: (barcode: Barcode?) -> Unit) {
val image = InputImage.fromBitmap(bitmap, 0)
barcodeScanner.process(image).continueWith(executor) {
val barcodes = it.result
if (barcodes.isEmpty()) {
Log.v("BarcodeScanner", "No barcode has been detected")
}
onNext(barcodes.firstOrNull())
}
}
}
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使用方法
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| private final BarcodeScannerProcessor processor = new BarcodeScannerProcessor();
public void decodeByMlkit(Bitmap bitmap) {
processor.processBitmap(bitmap, (barcode) -> {
if (barcode != null) {
}
return null;
});
}
public void onScanDone() {
processor.stop();
}
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注意事项
TODO 待补充
