android Zxing实现扫描二维码条形码功能仿微信集成闪光灯生成二维码

最近在做android项目需要用到二维码条形码扫描功能，我用的是Eclipse网上源码大多是GitHup上的Android studio版本的所以我改了一版集成到项目中去。

效果图：

左边版本的扫码框是自定义的。右边版本的扫码框和扫描线是图片因为太丑所以最终换成左边样式。

自定义版本我是仿着微信的样式大小来做的。

集成步骤：

以左边图片样式为例

1.首先将源码中com.google.zxing五个包引入到自己的项目中。

2.拷贝资源目录raw至本项目中，beep.ogg是扫描成功时的提示音。

3.拷贝或合并文件内容values里面的xml文件。

4.权限配置在AndroidManifest.xml中添加权限申请代码：

<uses-permission android:name="android.permission.INTERNET" /> <!-- 网络权限 -->
<uses-permission android:name="android.permission.VIBRATE" /> <!-- 震动权限 -->
<uses-permission android:name="android.permission.CAMERA" /> <!-- 摄像头权限 -->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera.autofocus" /> <!-- 自动聚焦权限 -->

还要配置CaptureActivity.java

功能实现:

完成上述集成之后，通过调用CaptureActivity就可以实现扫码功能。
MainActivity源码部分：

package com.example.scandemo2;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.dommy.qrcode.util.Constant;
import com.google.zxing.activity.CaptureActivity;

public class MainActivity extends Activity implements View.OnClickListener {
    Button btnQrCode; // 扫码
    TextView tvResult; // 结果

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

        initView();
    }

    private void initView() {
        btnQrCode = (Button) findViewById(R.id.btn_qrcode);
        btnQrCode.setOnClickListener(this);

        tvResult = (TextView) findViewById(R.id.txt_result);
    }

    // 开始扫码
    private void startQrCode() {
        // 二维码扫码
        Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
        startActivityForResult(intent, Constant.REQ_QR_CODE);
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.btn_qrcode:
                startQrCode();
                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //扫描结果回调
        if (requestCode == Constant.REQ_QR_CODE && resultCode == RESULT_OK) {
            Bundle bundle = data.getExtras();
            String scanResult = bundle.getString(Constant.INTENT_EXTRA_KEY_QR_SCAN);
            //将扫描出的信息显示出来
            tvResult.setText(scanResult);
        }
    }
}

activity_scanner.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <SurfaceView
            android:id="@+id/scanner_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="center" />
		
        <ImageButton
	            android:onClick="btn_back"
	            android:layout_width="40dip"
	            android:layout_height="40dip"
	            android:padding="10dip"
	            android:scaleType="centerCrop"
	            android:background="#00000000"
	            android:src="@drawable/btn_back" />
	        <TextView 
	            android:layout_width="match_parent"
	            android:layout_height="wrap_content"
	            android:padding="10dp"
	            android:textSize="17sp"
	            android:layout_x="0dp"
	            android:layout_y="0dp"
	            android:text="二维码/条码"
	            android:gravity="center"
	            android:textColor="#FFFFFF"
	            />
        
        <com.google.zxing.view.ViewfinderView
            android:id="@+id/viewfinder_content"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:corner_color="@color/corner_color"
            app:frame_color="@color/viewfinder_frame"
            app:label_text="将二维码/条形码放入框内，即可自动扫描"
            app:label_text_color="@color/colorAccent"
            app:laser_color="@color/laser_color"
            app:mask_color="@color/viewfinder_mask"
            app:result_color="@color/result_view"
            app:result_point_color="@color/result_point_color" />

        <ImageButton
            android:id="@+id/btn_flash"
            android:layout_width="40dip"
            android:layout_height="40dip"
            android:padding="6dip"
            android:layout_gravity="bottom|center_horizontal"
            android:layout_marginBottom="80dip"
            android:scaleType="centerInside"
            android:src="@drawable/flash_off" 
            android:background="#00000000" />
        <TextView
	        android:text="轻触照亮"
	        android:layout_width="80dip"
            android:layout_height="20dip"
	        android:layout_marginBottom="80dp"
	        android:layout_marginLeft="168dp"
	        android:layout_marginTop="550dp"
	        android:textColor="#FFFFFF" />
    </FrameLayout>

</LinearLayout>

CaptureActivity.java

package com.google.zxing.activity;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Vibrator;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.dommy.qrcode.util.Constant;
import com.dommy.qrcode.util.UriUtil;
import com.example.scandemo2.R;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.ChecksumException;
import com.google.zxing.DecodeHintType;
import com.google.zxing.FormatException;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.camera.CameraManager;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.decoding.CaptureActivityHandler;
import com.google.zxing.decoding.InactivityTimer;
import com.google.zxing.decoding.RGBLuminanceSource;
import com.google.zxing.qrcode.QRCodeReader;
import com.google.zxing.view.ViewfinderView;

import java.io.IOException;
import java.util.Hashtable;
import java.util.Vector;
public class CaptureActivity extends Activity implements Callback {

    private static final int REQUEST_CODE_SCAN_GALLERY = 100;

    private CaptureActivityHandler handler;
    private ViewfinderView viewfinderView;
    private ImageButton back;
    private ImageButton btnFlash;
    private Button btnAlbum; // 相册
    private boolean isFlashOn = false;
    private boolean hasSurface;
    private Vector<BarcodeFormat> decodeFormats;
    private String characterSet;
    private InactivityTimer inactivityTimer;
    private MediaPlayer mediaPlayer;
    private boolean playBeep;
    private static final float BEEP_VOLUME = 0.10f;
    private boolean vibrate;
    private ProgressDialog mProgress;
    private String photo_path;
    private Bitmap scanBitmap;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_scanner);
        CameraManager.init(getApplication());
        viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_content);

        btnFlash = (ImageButton) findViewById(R.id.btn_flash);
        btnFlash.setOnClickListener(flashListener);
        hasSurface = false;
        inactivityTimer = new InactivityTimer(this);

    }
    //返回
    public void btn_back(View view){
		this.finish();
	}
    @Override
    protected void onActivityResult(final int requestCode, int resultCode, Intent data) {
        if (resultCode==RESULT_OK) {
            switch (requestCode) {
                case REQUEST_CODE_SCAN_GALLERY:
                    handleAlbumPic(data);
                    break;
            }
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

    /**
     * 处理选择的图片
     * @param data
     */
    private void handleAlbumPic(Intent data) {
        //获取选中图片的路径
        photo_path = UriUtil.getRealPathFromUri(CaptureActivity.this, data.getData());

        mProgress = new ProgressDialog(CaptureActivity.this);
        mProgress.setMessage("正在扫描...");
        mProgress.setCancelable(false);
        mProgress.show();

        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                mProgress.dismiss();
                Result result = scanningImage(photo_path);
                if (result != null) {
                    Intent resultIntent = new Intent();
                    Bundle bundle = new Bundle();
                    bundle.putString(Constant.INTENT_EXTRA_KEY_QR_SCAN ,result.getText());

                    resultIntent.putExtras(bundle);
                    CaptureActivity.this.setResult(RESULT_OK, resultIntent);
                    finish();
                } else {
                    Toast.makeText(CaptureActivity.this, "识别失败", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    /**
     * 扫描二维码图片的方法
     * @param path
     * @return
     */
    public Result scanningImage(String path) {
        if(TextUtils.isEmpty(path)){
            return null;
        }
        Hashtable<DecodeHintType, String> hints = new Hashtable<>();
        hints.put(DecodeHintType.CHARACTER_SET, "UTF8"); //设置二维码内容的编码

        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true; // 先获取原大小
        scanBitmap = BitmapFactory.decodeFile(path, options);
        options.inJustDecodeBounds = false; // 获取新的大小
        int sampleSize = (int) (options.outHeight / (float) 200);
        if (sampleSize <= 0)
            sampleSize = 1;
        options.inSampleSize = sampleSize;
        scanBitmap = BitmapFactory.decodeFile(path, options);
        RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap);
        BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
        QRCodeReader reader = new QRCodeReader();
        try {
            return reader.decode(bitmap1, hints);
        } catch (NotFoundException e) {
            e.printStackTrace();
        } catch (ChecksumException e) {
            e.printStackTrace();
        } catch (FormatException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected void onResume() {
        super.onResume();
        SurfaceView surfaceView = (SurfaceView) findViewById(R.id.scanner_view);
        SurfaceHolder surfaceHolder = surfaceView.getHolder();
        if (hasSurface) {
            initCamera(surfaceHolder);
        } else {
            surfaceHolder.addCallback(this);
            surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        }
        decodeFormats = null;
        characterSet = null;

        playBeep = true;
        AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE);
        if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {
            playBeep = false;
        }
        initBeepSound();
        vibrate = true;
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (handler != null) {
            handler.quitSynchronously();
            handler = null;
        }
        CameraManager.get().closeDriver();
    }

    @Override
    protected void onDestroy() {
        inactivityTimer.shutdown();
        super.onDestroy();
    }

    /**
     * Handler scan result
     *
     * @param result
     * @param barcode
     */
    public void handleDecode(Result result, Bitmap barcode) {
        inactivityTimer.onActivity();
        playBeepSoundAndVibrate();
        String resultString = result.getText();
        //FIXME
        if (TextUtils.isEmpty(resultString)) {
            Toast.makeText(CaptureActivity.this, "Scan failed!", Toast.LENGTH_SHORT).show();
        } else {
            Intent resultIntent = new Intent();
            Bundle bundle = new Bundle();
            bundle.putString(Constant.INTENT_EXTRA_KEY_QR_SCAN, resultString);
            resultIntent.putExtras(bundle);
            this.setResult(RESULT_OK, resultIntent);
        }
        CaptureActivity.this.finish();
    }

    private void initCamera(SurfaceHolder surfaceHolder) {
        try {
            CameraManager.get().openDriver(surfaceHolder);
        } catch (IOException ioe) {
            return;
        } catch (RuntimeException e) {
            return;
        }
        if (handler == null) {
            handler = new CaptureActivityHandler(this, decodeFormats,
                    characterSet);
        }
    }

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

    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        if (!hasSurface) {
            hasSurface = true;
            initCamera(holder);
        }

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        hasSurface = false;

    }

    public ViewfinderView getViewfinderView() {
        return viewfinderView;
    }

    public Handler getHandler() {
        return handler;
    }

    public void drawViewfinder() {
        viewfinderView.drawViewfinder();

    }

    private void initBeepSound() {
        if (playBeep && mediaPlayer == null) {
            setVolumeControlStream(AudioManager.STREAM_MUSIC);
            mediaPlayer = new MediaPlayer();
            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mediaPlayer.setOnCompletionListener(beepListener);

            AssetFileDescriptor file = getResources().openRawResourceFd(
                    R.raw.beep);
            try {
                mediaPlayer.setDataSource(file.getFileDescriptor(),
                        file.getStartOffset(), file.getLength());
                file.close();
                mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
                mediaPlayer.prepare();
            } catch (IOException e) {
                mediaPlayer = null;
            }
        }
    }

    private static final long VIBRATE_DURATION = 200L;

    private void playBeepSoundAndVibrate() {
        if (playBeep && mediaPlayer != null) {
            mediaPlayer.start();
        }
        if (vibrate) {
            Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
            vibrator.vibrate(VIBRATE_DURATION);
        }
    }
    private final OnCompletionListener beepListener = new OnCompletionListener() {
        public void onCompletion(MediaPlayer mediaPlayer) {
            mediaPlayer.seekTo(0);
        }
    };

    /**
     *  闪光灯开关按钮
     */
    private View.OnClickListener flashListener = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            try {
                boolean isSuccess = CameraManager.get().setFlashLight(!isFlashOn);
                if(!isSuccess){
                    Toast.makeText(CaptureActivity.this, "暂时无法开启闪光灯", Toast.LENGTH_SHORT).show();
                    return;
                }
                if (isFlashOn) {
                    // 关闭闪光灯
                    btnFlash.setImageResource(R.drawable.flash_off);
                    isFlashOn = false;
                } else {
                    // 开启闪光灯
                    btnFlash.setImageResource(R.drawable.flash_on);
                    isFlashOn = true;
                }
            }catch (Exception e){
                e.printStackTrace();
            }
        }
    };
}

自定义扫码框大小上下位置不会设置请参考-->android Zxing修改二维码中扫描框的大小仿微信

如果调整扫码框绿色边角粗细扫描线扫码速度请打开

com.google.zxing.view.ViewfinderView.java文件在这里设置