android 使用zabar库实现条码扫描

导入zabar依赖

  implementation 'cn.bingoogolapple:bga-qrcode-zbar:1.3.6'
## 扫描界面Activity

```java
/这个是扫描界面的Activity
public class ZbarTestScanActivity extends AppCompatActivity implements QRCodeView.Delegate, CustomAdapt{
    private static final String TAG = ZbarTestScanActivity.class.getSimpleName();
    private static final int REQUEST_CODE_CHOOSE_QRCODE_FROM_GALLERY = 666;
    private static final int CAMERA_REQ_CODE = 3;
    private static final int DECODE = 3;
    private static final int REQUEST_CODE_SCAN_ONE = 4;
    private ZBarView mZBarView;
    private boolean select = true;
    private MediaPlayer xMediaPlayer = new MediaPlayer();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_zbar_test_scan);
        Log.d(TAG, "onCreate: --->2");
        mZBarView = findViewById(R.id.zbarview);
        Button bt = findViewById(R.id.bt);
        mZBarView.setType(BarcodeType.HIGH_FREQUENCY, null);
        mZBarView.setDelegate(this);

        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (select == true) {
                    select = false;
                    //打开闪光灯
                    mZBarView.openFlashlight();
                } else {
                    //关闭闪光灯
                    select = true;
                    mZBarView.closeFlashlight();
                }
            }
        });
    }

    @Override
    protected void onStart() {
        super.onStart();
        mZBarView.startCamera(); // 打开后置摄像头开始预览，但是并未开始识别
        // 打开前置摄像头开始预览，但是并未开始识别
        mZBarView.startCamera(Camera.CameraInfo.CAMERA_FACING_FRONT);
        mZBarView.startSpotAndShowRect(); // 显示扫描框，并开始识别
        mZBarView.getScanBoxView().setOnlyDecodeScanBoxArea(true);
        vibrate();
    }

    @Override
    protected void onStop() {
        mZBarView.stopCamera(); // 关闭摄像头预览，并且隐藏扫描框
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        mZBarView.onDestroy(); // 销毁二维码扫描控件
        if (xMediaPlayer != null) {
            if (xMediaPlayer.isPlaying()) {
                xMediaPlayer.stop();
                xMediaPlayer.reset();
                xMediaPlayer.release();
            }
            //不加下面这句，就可能释放不干净
//            System.exit(0);
        }
        super.onDestroy();
    }

    private void vibrate() {
        Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
        vibrator.vibrate(200);
    }
    //    这块是调用的系统的扫描成功之后的值

    @Override
    public void onScanQRCodeSuccess(String result) {
        Intent intent = new Intent();
        intent.putExtra("result", result);
        setResult(3, intent);
        finish();
        mediaplay();
        mZBarView.startSpot(); // 开始识别
        loadScanKitBtnClick(mZBarView);
    }

    private void mediaplay() {
        Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        try {
            xMediaPlayer.setDataSource(ZbarTestScanActivity.this, notification);
            xMediaPlayer.prepare();
            xMediaPlayer.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onCameraAmbientBrightnessChanged(boolean isDark) {
        // 这里是通过修改提示文案来展示环境是否过暗的状态，接入方也可以根据 isDark 的值来实现其他交互效果
        String tipText = mZBarView.getScanBoxView().getTipText();
        String ambientBrightnessTip = "\n环境过暗，请打开闪光灯";
        if (isDark) {
            if (!tipText.contains(ambientBrightnessTip)) {
                mZBarView.getScanBoxView().setTipText(tipText + ambientBrightnessTip);
            }
        } else {
            if (tipText.contains(ambientBrightnessTip)) {
                tipText = tipText.substring(0, tipText.indexOf(ambientBrightnessTip));
                mZBarView.getScanBoxView().setTipText(tipText);
            }
        }
    }

    //  在启动扫码Activity的地方添加动态权限申请
    public void loadScanKitBtnClick(View view) {
        requestPermission(CAMERA_REQ_CODE, DECODE);
    }

    private void requestPermission(int requestCode, int mode) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE}, requestCode);
    }//扫码格式通过setHmsScanTypes指定为QR码，如果需要支持其他码可以自己指定

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (permissions == null || grantResults == null) {
            return;
        }
        if (grantResults.length < 2 || grantResults[0] != PackageManager.PERMISSION_GRANTED || grantResults[1] != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        if (requestCode == CAMERA_REQ_CODE) {
            ScanUtil.startScan(this, CAMERA_REQ_CODE, new HmsScanAnalyzerOptions.Creator().setHmsScanTypes(HmsScan.QRCODE_SCAN_TYPE).create());
        }
    }

    @Override
    public void onScanQRCodeOpenCameraError() {
        Log.e(TAG, "打开相机出错");
    }

    @Override
    public boolean isBaseOnWidth() {
        return false;
    }

    @Override
    public float getSizeInDp() {
        return 720;
    }
}

## 扫描界面的View

```java

    <cn.bingoogolapple.qrcode.zbar.ZBarView
        android:id="@+id/zbarview"
        android:gravity="center"
        style="@style/MatchMatch"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:qrcv_animTime="1000"
        app:qrcv_barCodeTipText="将条码放入框内，即可自动扫描"
        app:qrcv_barcodeRectHeight="@dimen/dp_250"
        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_customGridScanLineDrawable="@mipmap/custom_grid_scan_line"
        app:qrcv_isAutoZoom="true"
        app:qrcv_isBarcode="true"
        app:qrcv_isOnlyDecodeScanBoxArea="false"
        app:qrcv_isShowDefaultGridScanLineDrawable="true"
        app:qrcv_isShowDefaultScanLineDrawable="true"
        app:qrcv_isShowLocationPoint="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_toolbarHeight="56dp"
        app:qrcv_topOffset="@dimen/dp_220"
        app:qrcv_isScanLineReverse="true"
        app:qrcv_verticalBias="-1"
        tools:ignore="MissingClass" />
## 返回主界面的回调

```java
   @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        data返回的是扫描的结果
    }