Clone this project and open it in Android Studio. Edit the gradle.properties file and set the OpenCVAndroidSDK variable to the full path to OpenCV Android SDK you downloaded on your system. Compile, ...

Android Studio Support with Intel INDE OpenCV: Enable an Existing Project To enable Intel INDE OpenCV support for an existing project, patch the build.gradle file for each module where you use ...

此时摄像头画面就在portrait方式下正常了，当然你也可以不采用反射的方法，直接采用注释掉的方法来处理，不过OpenCV的Java源码多采用反射的处理方式，这样做也是符合OpenCV的方式而已。