Zxing条码整数化：构造函数IntentIntegrator()未定义

Question

我正在尝试集成 Zxing 库，并使用我的应用程序中的条形码扫描仪。

所以，下载了两个java文件IntentIntegrator和IntentResult，放到这个包里：

com.google.zxing.integration

我的应用在这个包中的位置：

com.example.mindstormsgamepad

我在活动中使用的代码是：

package com.example.mindstormsgamepad;

import com.google.zxing.integration.IntentIntegrator;
import com.google.zxing.integration.IntentResult;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;
import android.widget.Button;
import android.widget.TextView;

/**
 * BarcodeScan Activity
 */

    public class BarcodeScanActivity extends CommonActivity implements OnClickListener{ 

        /** Debug */
        protected String TAG_SUB = "BarcodeScanActivity";

        private Button scanBtn;
        private TextView formatTxt, contentTxt;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            initTabSub( TAG_SUB );  
            log_d( "onCreate" );        
            super.onCreate( savedInstanceState );
            /* set the layout on the screen */
            View view = getLayoutInflater().inflate( R.layout.activity_barcode_scan, null );
            setContentView( view ); 

            /* Initialization of Bluetooth */
            initManager( view );
            setTitleName( R.string.activity_barcodescan );
            initButtonBack();
            initInputDeviceManager();

          Toast.makeText(BarcodeScanActivity.this, "QR Scan!", Toast.LENGTH_SHORT).show();


            /* Initialization of Scanning */
          scanBtn = (Button)findViewById(R.id.scan_button);
          formatTxt = (TextView)findViewById(R.id.scan_format);
          contentTxt = (TextView)findViewById(R.id.scan_content);
          scanBtn.setOnClickListener(this);

        }

    // --- onCreate end ---

        /**
         * === onResume ===
         */
        @Override
        public void onResume() {
            log_d( "onResume()" );
            super.onResume();
            startService();
            mInputDeviceManager.register(); 
        }

        /**
         * === onPause ===
         */
        @Override
        public void onPause() {
            log_d( "onPause()" );
            super.onPause();
            sendStop();
            mInputDeviceManager.unregister();
        }

        @Override
        public void onClick(View v) {
            // Start Scan
            if(v.getId()==R.id.scan_button){

                IntentIntegrator scanIntegrator = new IntentIntegrator(this);
                scanIntegrator.initiateScan();

            }
        }


            public void onActivityResult(int requestCode, int resultCode, Intent intent) {
                //retrieve scan result
                IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
                if (scanningResult != null) {
                    //we have a result
                    String scanContent = scanningResult.getContents();
                    String scanFormat = scanningResult.getFormatName();
                    formatTxt.setText("FORMAT: " + scanFormat);
                    contentTxt.setText("CONTENT: " + scanContent);

                    }else{
                    Toast toast = Toast.makeText(getApplicationContext(), 
                        "No Barcode data received!", Toast.LENGTH_SHORT);
                    toast.show();
                }
                }
    }

但是我收到了这个错误， 构造函数 IntentIntegrator(BarcodeScanActivity) 未定义

和

IntentIntegrator类型中的initialScan(Activity)方法不适用于参数()

在这些方面：

        IntentIntegrator scanIntegrator = new IntentIntegrator(this);
        scanIntegrator.initiateScan();

我是安卓编程新手， 如何解决这个问题？

感谢您的帮助。

Answer 1

试试这个：

Intent intent = new Intent("com.google.zxing.client.android.SCAN");
                    intent.putExtra("SCAN_MODE", "QR_CODE_MODE,PRODUCT_MODE");
                    startActivityForResult(intent, 0);

对于结果做onActivityResult方法中的代码

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
        Toast.makeText(getActivity(), "result ", 1000).show();
        if (requestCode == 0) {

            if (resultCode == RESULT_OK) {
                //do code here
            }

            else if (resultCode == RESULT_CANCELED) {
                //do code here
            }
        }

Answer 2

这意味着您的 Activity 最终不会扩展 android.app.Activity。看看 CommonActivity 扩展了什么。否则，您可能以某种方式拥有 IntentIntegrator 的旧副本或错误副本。