二维码扫描，BGAQRCode-Android，最优框架

全网最新最快，占用资源最少的二维码扫描框架

强烈推荐，速度快，占用资源少，安利安利

依赖文件(demo中用到的有些可根据需求改变)

compile 'com.google.zxing:core:3.2.1'
compile 'cn.bingoogolapple:bga-qrcodecore:1.1.7@aar'
compile 'cn.bingoogolapple:bga-zxing:1.1.7@aar'

根据需求加入对应的权限(动态获取权限请根据easyPermission文档操作)

  <uses-sdk tools:overrideLibrary="cn.bingoogolapple.photopicker,cn.bingoogolapple.androidcommon.adapter" />

    <uses-permission android:name="android.permission.CAMERA" />
    <!--android.permission.VIBRATE允许访问震动权限-->
    <uses-permission android:name="android.permission.VIBRATE" />
    <!--android.permission.FLASHLIGHT允许访问闪光灯的权限-->
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

布局中使用

<cn.bingoogolapple.qrcode.zxing.ZXingView
        android:id="@+id/zxingview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:qrcv_animTime="1000"
        app:qrcv_barCodeTipText="将条码放入框内，即可自动扫描"
        app:qrcv_barcodeRectHeight="140dp"
        app:qrcv_borderColor="@android:color/white"
        app:qrcv_borderSize="1dp"
        app:qrcv_cornerColor="@color/colorPrimaryDark"
        app:qrcv_cornerLength="20dp"
        app:qrcv_cornerSize="3dp"
        app:qrcv_isBarcode="false"
        app:qrcv_isCenterVertical="false"
        app:qrcv_isOnlyDecodeScanBoxArea="false"
        app:qrcv_isScanLineReverse="true"
        app:qrcv_isShowDefaultGridScanLineDrawable="false"
        app:qrcv_isShowDefaultScanLineDrawable="true"
        app:qrcv_isShowTipBackground="true"
        app:qrcv_isShowTipTextAsSingleLine="false"
        app:qrcv_isTipTextBelowRect="false"
        app:qrcv_maskColor="#33FFFFFF"
        app:qrcv_qrCodeTipText="将二维码/条码放入框内，即可自动扫描"
        app:qrcv_rectWidth="200dp"
        app:qrcv_scanLineColor="@color/colorPrimaryDark"
        app:qrcv_scanLineMargin="0dp"
        app:qrcv_scanLineSize="0.5dp"
        app:qrcv_tipTextColor="@android:color/white"
        app:qrcv_tipTextSize="12sp"
        app:qrcv_toolbarHeight="56dp"
        app:qrcv_topOffset="90dp" />

 代码中应用实现QRCodeView.Delegate接口

public class MainActivity extends AppCompatActivity implements QRCodeView.Delegate {


    private static final int REQUEST_CODE_CHOOSE_QRCODE_FROM_GALLERY = 666;

    @BindView(R.id.zxingview)
    cn.bingoogolapple.qrcode.zxing.ZXingView zxingview;

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

    }

    @Override
    protected void onStart() {
        super.onStart();
        //打开后置摄像头预览,但并没有开始扫描
        zxingview.startCamera();
//        开启扫描框
        zxingview.showScanRect();
        zxingview.startSpot();
    }

    @Override
    protected void onStop() {
        zxingview.stopCamera();
        super.onStop();
    }

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

    private void initView() {
        //设置二维码的代理
        zxingview.setDelegate(this);
    }

    //扫描成功解析二维码成功后调用,可做对应的操作
    @Override
    public void onScanQRCodeSuccess(String result) {
        //扫描成功后调用震动器
        vibrator();
        //显示扫描结果
        Toast.makeText(this, result, Toast.LENGTH_SHORT).show();
        //再次延时1.5秒后启动
        zxingview.startSpot();
    }

    private void vibrator() {
        //获取系统震动服务
        Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
        vibrator.vibrate(200);
    }

    //扫描失败后调用的方法
    @Override
    public void onScanQRCodeOpenCameraError() {
        Toast.makeText(this, "相机打开失败", Toast.LENGTH_SHORT).show();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        zxingview.showScanRect();
        if (resultCode == Activity.RESULT_OK && requestCode == REQUEST_CODE_CHOOSE_QRCODE_FROM_GALLERY) {
            final String picturePath = "1";

            /*
            这里为了偷懒，就没有处理匿名 AsyncTask 内部类导致 Activity 泄漏的问题
            请开发在使用时自行处理匿名内部类导致Activity内存泄漏的问题，处理方式可参考 https://github.com/GeniusVJR/LearningNotes/blob/master/Part1/Android/Android%E5%86%85%E5%AD%98%E6%B3%84%E6%BC%8F%E6%80%BB%E7%BB%93.md
             */
            new AsyncTask<Void, Void, String>() {
                @Override
                protected String doInBackground(Void... params) {
                    return QRCodeDecoder.syncDecodeQRCode(picturePath);
                }

                @Override
                protected void onPostExecute(String result) {
                    if (TextUtils.isEmpty(result)) {
                        Toast.makeText(MainActivity.this, "未发现二维码", Toast.LENGTH_SHORT).show();
                    } else {
                        Toast.makeText(MainActivity.this, result, Toast.LENGTH_SHORT).show();
                    }
                }
            }.execute();
        }
    }


}

扫描 速度提升太多了，推荐ZXing更换ZBar,更多属性，还是要到github上去了解。

GitHub:https://github.com/bingoogolapple/BGAQRCode-Android