2016年更新

借助{* 3}} Google Play服务v7.8，您可以访问新的Mobile Vision API。这可能是现在实现条形码扫描最方便的方式，它也是latest release。

来自works offline：

条形码API可以在设备上以任何方向实时检测条形码。它还可以同时检测多个条形码。

它读取以下条形码格式：


1D条码：EAN-13，EAN-8，UPC-A，UPC-E，Code-39，Code-93，Code-128，ITF，Codabar

二维条码：二维码，数据矩阵，PDF-417，AZTEC


它会自动解析QR码，数据矩阵，PDF-417和Aztec值，以支持以下格式：


URL

联系信息（VCARD等）

日历活动

电子邮件

电话

SMS

ISBN

无线网络

地理位置（经度和纬度）

AAMVA驾驶执照/ ID

Answer 3

以下是示例代码：我的应用程序使用ZXing条码扫描器。

您需要以下两个课程： IntentIntegrator和 IntentResult

调用扫描程序（例如OnClickListener，OnMenuItemSelected ...），“PRODUCT_MODE” - 它扫描标准1D条形码（您可以添加更多）。：

IntentIntegrator.initiateScan(this, 
           "Warning", 
           "ZXing Barcode Scanner is not installed, download?",
           "Yes", "No",
           "PRODUCT_MODE");

获取条形码：

public void onActivityResult(int requestCode, int resultCode, Intent intent) {  
  switch (requestCode) {
  case IntentIntegrator.REQUEST_CODE:
     if (resultCode == Activity.RESULT_OK) {

        IntentResult intentResult = 
           IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);

        if (intentResult != null) {

           String contents = intentResult.getContents();
           String format = intentResult.getFormatName();

           this.elemQuery.setText(contents);
           this.resume = false;
           Log.d("SEARCH_EAN", "OK, EAN: " + contents + ", FORMAT: " + format);
        } else {
           Log.e("SEARCH_EAN", "IntentResult je NULL!");
        }
     } else if (resultCode == Activity.RESULT_CANCELED) {
        Log.e("SEARCH_EAN", "CANCEL");
     }
  }
}

内容包含条形码编号

Answer 4

以下是使用camera api

的示例代码

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.IOException;
import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.Frame;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;

public class MainActivity extends AppCompatActivity {

TextView barcodeInfo;
SurfaceView cameraView;
CameraSource cameraSource;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    cameraView = (SurfaceView) findViewById(R.id.camera_view);
      barcodeInfo = (TextView) findViewById(R.id.txtContent);


    BarcodeDetector barcodeDetector =
            new BarcodeDetector.Builder(this)
                    .setBarcodeFormats(Barcode.CODE_128)//QR_CODE)
                    .build();

    cameraSource = new CameraSource
            .Builder(this, barcodeDetector)
            .setRequestedPreviewSize(640, 480)
            .build();

    cameraView.getHolder().addCallback(new SurfaceHolder.Callback() {
        @Override
        public void surfaceCreated(SurfaceHolder holder) {

            try {
                cameraSource.start(cameraView.getHolder());
            } catch (IOException ie) {
                Log.e("CAMERA SOURCE", ie.getMessage());
            }
        }

        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        }

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
            cameraSource.stop();
        }
    });


    barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
        @Override
        public void release() {
        }

        @Override
        public void receiveDetections(Detector.Detections<Barcode> detections) {

            final SparseArray<Barcode> barcodes = detections.getDetectedItems();

            if (barcodes.size() != 0) {
                barcodeInfo.post(new Runnable() {    // Use the post method of the TextView
                    public void run() {
                        barcodeInfo.setText(    // Update the TextView
                                barcodes.valueAt(0).displayValue
                        );
                    }
                });
            }
        }
    });
}
}

activity_main.xml中

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.gateway.cameraapibarcode.MainActivity">

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <SurfaceView
        android:layout_width="640px"
        android:layout_height="480px"
        android:layout_centerVertical="true"
        android:layout_alignParentLeft="true"
        android:id="@+id/camera_view"/>

    <TextView
        android:text=" code reader"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/txtContent"/>
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Process"
        android:id="@+id/button"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true" />
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imgview"/>
</LinearLayout>
</RelativeLayout>

的build.gradle（模块：应用）

在依赖项中添加 compile＆＃39; com.google.android.gms：play-services：7.8。+＆＃39;

Answer 5

您还可以使用barcodefragmentlib这是zxing的扩展，但提供条形码扫描作为片段库，因此可以非常容易地集成。

以下是使用库

的支持documentation

Answer 6

模块应用：

implementation 'com.google.zxing:core:3.2.1'

implementation 'com.journeyapps:zxing-android-embedded:3.2.0@aar'

的AndroidManifest.xml

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus"/>

MainActivity.java

public class MainActivity extends AppCompatActivity {

    Button BarCode;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        BarCode = findViewById(R.id.button_barcode);
        final Activity activity = this;

        BarCode.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                IntentIntegrator intentIntegrator = new IntentIntegrator(activity);
                intentIntegrator.setDesiredBarcodeFormats(intentIntegrator.ALL_CODE_TYPES);
                intentIntegrator.setBeepEnabled(false);
                intentIntegrator.setCameraId(0);
                intentIntegrator.setPrompt("SCAN");
                intentIntegrator.setBarcodeImageEnabled(false);
                intentIntegrator.initiateScan();
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        IntentResult Result = IntentIntegrator.parseActivityResult(requestCode , resultCode ,data);
        if(Result != null){
            if(Result.getContents() == null){
                Log.d("MainActivity" , "cancelled scan");
                Toast.makeText(this, "cancelled", Toast.LENGTH_SHORT).show();
            }
            else {
                Log.d("MainActivity" , "Scanned");
                Toast.makeText(this,"Scanned -> " + Result.getContents(), Toast.LENGTH_SHORT).show();
            }
        }
        else {
            super.onActivityResult(requestCode , resultCode , data);
        }
    }
}

Answer 7

使用Google Firebase ML Kit的条形码扫描API，您可以读取使用大多数标准条形码格式编码的数据。

https://firebase.google.com/docs/ml-kit/read-barcodes?authuser=0

您可以点击此链接有效阅读条形码。

Answer 8

建筑物条形码扫描功能分为两部分，一是使用相机捕获条形码图像，二是从图像中提取条形码值。

可以使用相机应用程序从您的应用程序捕获条形码图像，并可以使用Firebase Machine Learning Kit条形码扫描API提取条形码值。

这是一个示例应用程序 https://www.zoftino.com/android-barcode-scanning-example

Answer 9

我遇到了parseActivityForResult参数的问题。我得到了这个工作：

package JMA.BarCodeScanner;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class JMABarcodeScannerActivity extends Activity {

    Button captureButton;
    TextView tvContents;
    TextView tvFormat;
    Activity activity;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        activity = this;
        captureButton = (Button)findViewById(R.id.capture);
        captureButton.setOnClickListener(listener);
        tvContents = (TextView)findViewById(R.id.tvContents);
        tvFormat = (TextView)findViewById(R.id.tvFormat);
    }

    public void onActivityResult(int requestCode, int resultCode, Intent intent) 
    {  
        switch (requestCode) 
        {
            case IntentIntegrator.REQUEST_CODE:
            if (resultCode == Activity.RESULT_OK) 
            {
                IntentResult intentResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);

                if (intentResult != null) 
                {
                   String contents = intentResult.getContents();
                   String format = intentResult.getFormatName();
                   tvContents.setText(contents.toString());
                   tvFormat.setText(format.toString());

                   //this.elemQuery.setText(contents);
                   //this.resume = false;
                   Log.d("SEARCH_EAN", "OK, EAN: " + contents + ", FORMAT: " + format);
                } else {
                    Log.e("SEARCH_EAN", "IntentResult je NULL!");
                }
            } 
            else if (resultCode == Activity.RESULT_CANCELED) {
                Log.e("SEARCH_EAN", "CANCEL");
            }
        }
    }

    private View.OnClickListener listener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
             IntentIntegrator integrator = new IntentIntegrator(activity);
             integrator.initiateScan();
        }
    };
}

Latyout for Activity：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <Button
        android:id="@+id/capture"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Take a Picture"/>

    <TextView xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/tvContents"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <TextView xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/tvFormat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</LinearLayout>

如何在Android上使用相机读取条形码？

9 个答案:

2016年更新