Android Camera APP development issues (1) -- about FaceDetection

This article is a summary of my personal development of the Camera APP. It mainly introduces the basic usage and precautions of FaceDetection. If you have any mistakes or deficiencies in this article, you are welcome to criticize and correct them.1. FaceDetection1. Version supportFaceDetection is Android (Android Version 4.0, ADT 14). Whether the feature is supported depends on the limitations of the device itself (Camera. Parameters. getMaxNumDetectedFaces () > 0).2. FaceDetectionListenerThe following is the source code of the FaceDetectionListener interface: FaceDetectionListener faces The detected faces in a list camera The service object onFaceDetection (Face [] faces, Camera camera); there is only one method for FaceDetection (Face [] faces, Camera camera ). Faces is the array of detected faces (which may not be detected), and camera is the current Camera object. In use, you need to create a FaceDetectionListener and override the onFaceDetection method to traverse faces in the method for processing. Example: NodinFaceDetectionListener (); NodinFaceDetectionListener FaceDetectionListener {String =; onFaceDetection (Face [] faces, Camera camera) {Auto-generated method stub (= faces | faces. = 0) {Hide face frame. (,); {Calculate the size of face frame and show. (,);4. Stop FaceDetection5,