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