Here you can find the source of setCameraDisplayOrientation(Context mContext, int cameraId, Camera camera)
public static void setCameraDisplayOrientation(Context mContext, int cameraId, Camera camera)
//package com.java2s; //License from project: Apache License import android.app.Activity; import android.content.Context; import android.hardware.Camera; import android.hardware.Camera.CameraInfo; import android.view.Surface; public class Main { public static void setCameraDisplayOrientation(Context mContext, int cameraId, Camera camera) { CameraInfo info = new CameraInfo(); Camera.getCameraInfo(cameraId, info); int rotation = ((Activity) mContext).getWindowManager() .getDefaultDisplay().getRotation(); int degrees = 0; switch (rotation) { case Surface.ROTATION_0: degrees = 0;/*from w ww . j a va 2s .com*/ break; case Surface.ROTATION_90: degrees = 90; break; case Surface.ROTATION_180: degrees = 180; break; case Surface.ROTATION_270: degrees = 270; break; } int result; if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { result = (info.orientation + degrees) % 360; result = (360 - result) % 360; // compensate the mirror } else { // back-facing result = (info.orientation - degrees + 360) % 360; } camera.setDisplayOrientation(result); } }