【教程】autojs使用zxing扫描条形码和二维码实现烟草价格扫码查询

   这原本是这位大佬发的(autojs调用zxing实现扫码功能_autojs扫码插件)，略微修改了一下，方便自己的代码直接调用。

"ui";
var utils = {};

// runtime.loadDex("core.dex");
runtime.loadDex("/sdcard/core.dex");

importClass(com.google.zxing.PlanarYUVLuminanceSource);
importClass(com.google.zxing.common.HybridBinarizer)
importClass(com.google.zxing.BinaryBitmap)
importClass(com.google.zxing.MultiFormatReader)
importClass(com.google.zxing.NotFoundException)
importClass(com.google.zxing.DecodeHintType)
importClass(com.google.zxing.BarcodeFormat)


var scanBinder = null;
var scanBindService = function () {
  var intent = new android.content.Intent();
  intent.setComponent(new android.content.ComponentName("com.ten.weixinpay", "com.ten.weixinpay.MyService"));
  let listener = new JavaAdapter(android.content.ServiceConnection, {
    onServiceConnected(componentName, iBinder) {
      console.log("链接成功");
      scanBinder = iBinder;
    },
    onServiceDisconnected(componentName) {
      console.log("链接断开")
      scanBinder = null;
      scanBindService()
    }
  });
  activity.bindService(intent, listener, 1)
}
//scanBindService();
var scan = function () {
  if (!scanBinder) {
    scanBindService();
  };
  if (!scanBinder) {
    toast("初始化中")
    return;
  }
  var data = android.os.Parcel.obtain();
  var result = android.os.Parcel.obtain();
  scanBinder.transact(1, data, result, 0);
  console.log("返回");
  result.readException();
  return result.readString();
}

var show = function (callback) {
  var dialog_win = floaty.rawWindow(
    <vertical>
      <button id="back">返回</button>
      <android.view.SurfaceView id="surfaceView" />
    </vertical>
  );

  dialog_win.setSize(device.width/2, device.height/2);
  dialog_win.setPosition(device.width/4, device.height/4);

  dialog_win.back.click(function () {
    callback(null);
    dialog_win.close();
    return;
  })
  
  var mCamera;
  var surfaceHolder = dialog_win.surfaceView.getHolder();

  //90度
  var rotateCW = function (data2, imageWidth, imageHeight) {
    var yuv = util.java.array('byte', imageWidth * imageHeight);
    var i = 0;
    for (var x = 0; x < imageWidth; x++) {
      for (var y = imageHeight - 1; y >= 0; y--) {
        yuv[i] = data2[(y * imageWidth) + x];
        i++;
      }
    }
    return yuv;
  }

  var size = null;
  var stateHandler = new android.os.Handler(new JavaAdapter(android.os.Handler.Callback,{
    handleMessage(message) {
        console.log(message);
        if(message.what == 1){
            console.log(message.obj);
        }
        return true;
    }
  }))

  var setCallback = function () {
    mCamera.setOneShotPreviewCallback(new JavaAdapter(android.hardware.Camera.PreviewCallback, {
      onPreviewFrame(data, camera) {
       // stateHandler.obtainMessage(1, data).sendToTarget();
        try {
          var source = new com.google.zxing.PlanarYUVLuminanceSource(data, size.width, size.height, 0, 0, size.width, size.height, false);
          if (!source) {
            return;
          }
          var bitmap = new com.google.zxing.BinaryBitmap(new com.google.zxing.common.HybridBinarizer(source));
          if (!bitmap) {
            return;
          }
          var reader = new com.google.zxing.MultiFormatReader();
          var m = new java.util.HashMap()
          m.put(com.google.zxing.DecodeHintType.CHARACTER_SET, "utf-8")
          var rawResult = reader.decode(bitmap, m);
          if (rawResult) {
            callback(rawResult.getText());
            dialog_win.close();
            return;
          }
        } catch (error) {
            //console.log(error);
        }
        setCallback();
      }
    }))
  }

  var focusing = false;
  var autoFocusCallback = new android.hardware.Camera.AutoFocusCallback({
      onAutoFocus(success, theCamera) {
            focusing = false;
            setAutoFocus()
            //setCallback();
      }
  })

  var setAutoFocus = function(){
    if(!focusing){
        focusing = true;
        mCamera.autoFocus(autoFocusCallback);
    }
  }

  surfaceHolder.addCallback(new JavaAdapter(android.view.SurfaceHolder.Callback, {
    surfaceCreated: function (surfaceDestroyed) {
      mCamera = android.hardware.Camera.open(0); // 0 或者 1
      if (!mCamera) {
        toast("摄像头打开失败");
        return
      }
      try {
        var parameters = mCamera.getParameters();
        size = parameters.getPreviewSize();
        decodeFormats = parameters.getPreviewFormat();
        var focusModes = parameters.getSupportedFocusModes();
        if (focusModes.contains(android.hardware.Camera.Parameters.FOCUS_MODE_AUTO)) {
          parameters.setFocusMode(android.hardware.Camera.Parameters.FOCUS_MODE_AUTO);
        }
        mCamera.setParameters(parameters)
        mCamera.setDisplayOrientation(90);
        mCamera.setPreviewDisplay(surfaceHolder);
      } catch (error) {
        console.log(error);
      }
    },
    surfaceChanged: function (surfaceDestroyed, arg1, arg2, arg3) {
      mCamera.startPreview();
      setAutoFocus();
      setCallback();
    },
    surfaceDestroyed: function (surfaceDestroyed) {
      focusing = false;
      if (mCamera) {
        try {
          mCamera.release();
        } catch (error) {}
      }
    }
  }))
}


utils.show = show;
module.exports = utils;

var barcode = require("./barcode.js");

barcode.show(function (result) {
    if(result) {
        console.log("识别到的条形码: "+result);
        // ui.barcodeInput.setText(result);
        // showFloatWindow(searchDatabase(result));
    }else {
        console.log("没有识别到条形码");
    }
});