?具體看git的Demo代碼，下面是自己寫的掃描二維碼的代碼：

1.gargle引入：

//二維碼掃描compile 'com.google.zxing:core:3.2.1'compile 'cn.bingoogolapple:bga-qrcodecore:1.1.3@aar'compile 'cn.bingoogolapple:bga-zxing:1.1.3@aar'

2.掃碼類：

package briefer.pet.ui.activity;import android.Manifest; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Vibrator; import android.support.v4.app.ActivityCompat; import android.support.v7.app.AppCompatActivity; import android.text.TextUtils; import android.util.Log; import android.view.View; import android.widget.Toast;import briefer.pet.R; import cn.bingoogolapple.qrcode.core.QRCodeView; import cn.bingoogolapple.qrcode.zxing.ZXingView;/*** 掃碼* Created by zst on 2017/6/6.*/public class ScanCodeActivity extends Activity implements QRCodeView.Delegate {private static final int REQUEST_CODE_CAMERA = 999;private static final String TAG = ScanCodeActivity.class.getSimpleName();private QRCodeView mQRCodeView;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_scan_code);mQRCodeView = (ZXingView) findViewById(R.id.zxingview);mQRCodeView.setDelegate(this);Log.e(TAG, "掃碼:01");}@Overrideprotected void onStart() {super.onStart();mQRCodeView.startCamera(); // mQRCodeView.startCamera(Camera.CameraInfo.CAMERA_FACING_FRONT);mQRCodeView.startSpot();Log.e(TAG, "掃碼:02");}@Overrideprotected void onStop() {mQRCodeView.stopCamera();super.onStop();Log.e(TAG, "掃碼:03");}@Overrideprotected void onDestroy() {mQRCodeView.onDestroy();super.onDestroy();Log.e(TAG, "掃碼:04");}//震動器private void vibrate() {Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);vibrator.vibrate(100);Log.e(TAG, "掃碼:05");}@Overridepublic void onScanQRCodeSuccess(String result) {Log.i(TAG, "result:" + result);//Toast.makeText(this, result, Toast.LENGTH_SHORT).show();vibrate();//震動mQRCodeView.stopSpot();if (!TextUtils.isEmpty(result)) {mQRCodeView.stopCamera();mQRCodeView.onDestroy();Intent intent = new Intent(ScanCodeActivity.this, ServiceManagerDianZhuNewActivity.class);intent.putExtra("url", result);//intent.setData(Uri.parse(result));startActivity(intent);finish();} else {Toast.makeText(this, "鏈接無效,請重新掃描", Toast.LENGTH_SHORT).show();mQRCodeView.startSpot();}Log.e(TAG, "掃碼:06");}@Overridepublic void onScanQRCodeOpenCameraError() {Log.e(TAG, "無相機權限,打開相機出錯");ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.CAMERA}, REQUEST_CODE_CAMERA);Log.e(TAG, "掃碼:07");}public void onClick(View v) {switch (v.getId()) {case R.id.start_spot:mQRCodeView.startSpot();break;case R.id.stop_spot:mQRCodeView.stopSpot();break;case R.id.open_flashlight:mQRCodeView.openFlashlight();break;case R.id.close_flashlight:mQRCodeView.closeFlashlight();break;case R.id.rl_back://onDestroy();mQRCodeView.stopCamera();mQRCodeView.onDestroy();finish();break;}}@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {if (requestCode == REQUEST_CODE_CAMERA) {mQRCodeView.startCamera();mQRCodeView.startSpot();}} }

3.布局

activity_scan_code.xml

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout style="@style/MatchMatch"xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"><cn.bingoogolapple.qrcode.zxing.ZXingViewandroid:id="@+id/zxingview"style="@style/MatchMatch"app:qrcv_animTime="2000"app:qrcv_barCodeTipText="將條碼放入框內，即可自動掃描"app:qrcv_borderColor="@android:color/white"app:qrcv_borderSize="1dp"app:qrcv_cornerColor="#f57257"app:qrcv_cornerLength="20dp"app:qrcv_cornerSize="3dp"app:qrcv_isBarcode="false"app:qrcv_isOnlyDecodeScanBoxArea="true"app:qrcv_isScanLineReverse="true"app:qrcv_isShowDefaultGridScanLineDrawable="true"app:qrcv_isShowDefaultScanLineDrawable="false"app:qrcv_isShowTipBackground="true"app:qrcv_isShowTipTextAsSingleLine="false"app:qrcv_isTipTextBelowRect="false"app:qrcv_maskColor="#33FFFFFF"app:qrcv_qrCodeTipText="將二維碼放入框內，即可自動掃描"app:qrcv_rectWidth="200dp"app:qrcv_scanLineColor="#f57257"app:qrcv_scanLineMargin="0dp"app:qrcv_scanLineSize="1dp"app:qrcv_tipTextColor="@android:color/white"app:qrcv_tipTextSize="12sp"app:qrcv_toolbarHeight="0dp"app:qrcv_topOffset="180dp"/><LinearLayoutstyle="@style/MatchWrap.Vertical"android:layout_alignParentBottom="true"android:layout_marginBottom="50dp"><LinearLayout style="@style/MatchWrap.Horizontal"><TextViewandroid:id="@+id/start_spot"style="@style/AutoWrapTv"android:text="開始識別"android:visibility="gone"/><TextViewandroid:id="@+id/stop_spot"style="@style/AutoWrapTv"android:text="暫停識別"android:visibility="gone"/><TextViewandroid:id="@+id/open_flashlight"style="@style/AutoWrapTv"android:text="開燈"/><TextViewandroid:id="@+id/close_flashlight"style="@style/AutoWrapTv"android:text="關燈"/></LinearLayout></LinearLayout><RelativeLayoutandroid:id="@+id/rl_back"android:layout_width="60dp"android:layout_height="60dp"android:layout_marginTop="30dp"android:onClick="onClick"android:layout_marginLeft="10dp"><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:src="@drawable/ic_back"/></RelativeLayout> </RelativeLayout>

4.Style.xml

<!-- 掃描樣式 --><style name="MatchMatch"><item name="android:layout_width">match_parent</item><item name="android:layout_height">match_parent</item></style><style name="WrapMatch"><item name="android:layout_width">wrap_content</item><item name="android:layout_height">match_parent</item></style><style name="MatchWrap"><item name="android:layout_width">match_parent</item><item name="android:layout_height">wrap_content</item></style><style name="WrapMatch.Vertical"><item name="android:orientation">vertical</item></style><style name="MatchWrap.Vertical"><item name="android:orientation">vertical</item></style><style name="MatchWrap.Horizontal"><item name="android:orientation">horizontal</item></style><style name="AutoWrap"><item name="android:layout_width">0dp</item><item name="android:layout_weight">1</item><item name="android:layout_height">wrap_content</item></style><style name="AutoWrapTv" parent="AutoWrap"><item name="android:textSize">12sp</item><item name="android:textColor">@android:color/white</item><item name="android:gravity">center</item><item name="android:background">@drawable/selector_btn_orange</item><item name="android:layout_margin">45dp</item><item name="android:onClick">onClick</item><item name="android:paddingLeft">4dp</item><item name="android:paddingRight">4dp</item><item name="android:paddingTop">8dp</item><item name="android:paddingBottom">8dp</item></style>

5.selector_btn_orange.xml

<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:state_pressed="true"><shape android:shape="rectangle"><solid android:color="#CCf57257" /><corners android:radius="5dp" /></shape></item><item><shape android:shape="rectangle"><solid android:color="#f57257" /><corners android:radius="5dp" /></shape></item></selector>

6.權限

<!-- 掃碼 --> <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.VIBRATE" /> <uses-permission android:name="android.permission.FLASHLIGHT" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

遇到的問題：

1.使用gardle導入jar包的時候，

compile 'cn.bingoogolapple:bga-qrcodecore:1.1.3@aar'

1.1.3的版本號一定要輸入對，否則導入不成功。

2.Demo中沒有考慮那么全對于攝像頭打開和關閉，這里需要自己打Log來測試一下掃碼的順序，這樣好開發。

3.Demo中是按鈕啟動掃碼的，不會打開Activity就會掃碼的，所以自己打開Activity的時候要自己啟動一下掃碼：

mQRCodeView.startSpot();

總結

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