Android Bitmap Rotate computePictureRotation()

Here you can find the source of computePictureRotation()


compute Picture Rotation


Open Source License


public static int computePictureRotation() 

Method Source Code

//package com.java2s;
/**//from w  ww. jav a  2 s. c o  m
 * Funf: Open Sensing Framework Copyright (C) 2010-2011 Nadav Aharony, Wei Pan, Alex Pentland.
 * Acknowledgments: Alan Gardner Contact:
 * Author(s): Pararth Shah (
 * This file is part of Funf.
 * Funf is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * Funf is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
 * General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License along with Funf. If not,
 * see <>.

public class Main {
    private static int mCameraType;
    private static int mCameraAngle;

    public static int computePictureRotation() {
        if (mCameraType == 1 && (mCameraAngle == 90 || mCameraAngle == 270)) {
            // for front-facing camera, portrait and reverse-portrait orientation 
            // gives mirror image of actual picture, which needs to be corrected
            return (180 + mCameraAngle) % 360;
        return mCameraAngle;


  1. rotateBitmap(Bitmap source, float angle)
  2. rotateBitmap(Bitmap source, int rotation, boolean recycle)
  3. rotatePic(Bitmap bitmap, int degree)
  4. rotation(Bitmap source, int degrees)
  5. GetRotatedBitmap(Bitmap bitmap, int degrees)
  6. GetExifOrientation(String filepath)
  7. reflectionFromBitmap(Bitmap originalBitmap, boolean isFuzzy)
  8. rotate(Bitmap bitmap, int angle)
  9. rotate(Bitmap bitmap, int degrees)