Here you can find the source of getCameraDisplayOrientation(Context context, int cameraId, android.hardware.Camera camera)
public static int getCameraDisplayOrientation(Context context, int cameraId, android.hardware.Camera camera)
//package com.java2s; import android.content.Context; import android.hardware.Camera; import android.view.Surface; import android.view.WindowManager; public class Main { public static int getCameraDisplayOrientation(Context context, int cameraId, android.hardware.Camera camera) { android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); android.hardware.Camera.getCameraInfo(cameraId, info); int rotation = ((WindowManager) context .getSystemService(Context.WINDOW_SERVICE)) .getDefaultDisplay().getRotation(); int degrees = 0; switch (rotation) { case Surface.ROTATION_0: degrees = 0;/*from w ww .j av a 2 s. 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; } return result; } }