Android设备作为PC的连续条码扫描器
创始人
2024-10-10 10:30:22
0

使用Android的摄像头进行条码扫描,并将扫描得到的条码数据通过网络连接发送到PC端进行处理。具体实现可以通过编写Android应用程序和PC端程序来实现。在Android应用程序中,可以使用ZBar或ZXing等条码扫描库来实现摄像头的调用和扫描操作,并将扫描得到的条码数据以Socket通信的方式发送到PC端程序。在PC端程序中,可以使用Python等语言来进行Socket通信的处理和界面的设计。以下是一个简单的示例代码:Android端代码:

import java.net.*;
import java.io.*;
import android.util.Base64;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import com.google.zxing.*;
import com.google.zxing.common.*;
import com.google.zxing.client.android.*;
import com.google.zxing.client.android.camera.*;
import com.google.zxing.client.android.result.*;
import com.google.zxing.client.android.encode.*;
import com.google.zxing.client.result.*;

public class BarcodeScanner extends Activity implements Camera.PreviewCallback {
private CameraManager cameraManager;
private CameraWrapper cameraWrapper;
private Handler handler = new Handler();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    cameraManager = new CameraManager(getApplication());
    cameraWrapper = new CameraWrapper(this, cameraManager, this);
    cameraWrapper.start();
}

@Override
public void onResume() {
    super.onResume();
    cameraWrapper.onResume();
}

@Override
public void onPause() {
    super.onPause();
    cameraWrapper.onPause();
}

@Override
public void onPreviewFrame(byte[] data, Camera camera) {
    Result result = ZXingScanning.decode(data, camera.getParameters().getPreviewSize().width, camera.getParameters().getPreviewSize().height);
    if (result != null) {
        sendBarcode(result.getText());
    }
}

private void sendBarcode(String barcode) {
    Socket socket = null;
    try {
        socket = new Socket("192.168.1.100", 8888);
        OutputStream out = socket.getOutputStream();
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        Bitmap bitmap = QRCodeEncoder.encodeAsBitmap(barcode, BarcodeFormat.QR_CODE, 150, 150);
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        byte[] bitmapdata = stream.toByteArray();
        String base64 = Base64.encodeToString(bitmapdata, Base64.NO_WRAP);
        String message = "BARCODE:" + barcode + ":" + base64;
        out.write(message.getBytes("UTF-8"));
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (socket != null) {
            try {
                socket.close();
            } catch (Exception ex) {
            }
        }
    }
}
}

PC端代码:

import java.net.*;
import java.io.*;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;

public class BarcodeScannerServer {
public static void main(String[] args) {
    try {
        ServerSocket server = new ServerSocket(8888);
        System.out.println("Waiting for connection...");
        while (true) {
            Socket socket = server.accept();
            System.out.println("Connected from " + socket.getInetAddress().getHostName());
            InputStream in = socket.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
            String command = reader.readLine();
            if (command.startsWith("BARCODE:")) {
                String[] parts = command.split(":");
                String barcode = parts[1];
                String base64 = parts[2];
                byte[] bitmapdata = Base64.decode

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