1、在module app中的build.gradle中加入依赖

compile 'com.journeyapps:zxing-android-embedded:3.5.0'

权限

2、设置属性

在点击事件中初始化IntentIntegrator integrator = new IntentIntegrator(MainActivity.this);integrator.initiateScan();

如果想要竖屏显示需要新建一个空的activity继承CaptureActivity

public class ScanActivity extends CaptureActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);    }}

在AndroidManifest.xml中设置ScanActivity属性

activity    android:name=".ScanActivity"    android:screenOrientation="portrait" />

点击事件中

IntentIntegrator integrator = new IntentIntegrator(MainActivity.this);// 设置要扫描的条码类型，ONE_D_CODE_TYPES：一维码，QR_CODE_TYPES-二维码integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);integrator.setCaptureActivity(ScanActivity.class);integrator.setPrompt("请扫描二维码"); //底部的提示文字，设为""可以置空integrator.setCameraId(0); //前置或者后置摄像头integrator.setBeepEnabled(false); //扫描成功的「哔哔」声，默认开启integrator.setBarcodeImageEnabled(true);//是否保留扫码成功时候的截图integrator.initiateScan();