android 照片旋转并保存

    /**     * 读取图片属性：旋转的角度     * @param path 图片绝对路径     * @return degree旋转的角度     */    public int readPictureDegree(String path) {        int degree  = 0;        try {                ExifInterface exifInterface = new ExifInterface(path);                int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);                switch (orientation) {                case ExifInterface.ORIENTATION_ROTATE_90:                        degree = 90;                        break;                case ExifInterface.ORIENTATION_ROTATE_180:                        degree = 180;                        break;                case ExifInterface.ORIENTATION_ROTATE_270:                        degree = 270;                        break;                }        } catch (IOException e) {                e.printStackTrace();        }        return degree;    } /*    * 旋转图片     * @param angle     * @param bitmap     * @return Bitmap     */    public Bitmap rotaingImageView(int angle , Bitmap bitmap) {         //旋转图片 动作          Matrix matrix = new Matrix();       matrix.postRotate(angle);       // 创建新的图片          return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);     }/***     * 将bitmap保存在SD jpeg格式     *      * @param bitmap     *            图片bitmap     * @param filePath     *            要保存图片路径     * @param quality     *            压缩质量值     */    public void saveImage(Bitmap bitmap, String filePath, int quality) {        FileOutputStream fileOutputStream = null;        try {            fileOutputStream = new FileOutputStream(filePath);            bitmap.compress(CompressFormat.JPEG, quality, fileOutputStream);            fileOutputStream.flush();            fileOutputStream.close();            // 如果图片还没有回收，强制回收            if (!bitmap.isRecycled()) {                bitmap.recycle();                System.gc();            }        } catch (Exception e) {        }    }bitmap=ImageCompress.decodeSampledBitmapFromResource(filename, 480, 800);                                        //图片旋转                    int Degree = imageUtils.readPictureDegree(filename);                    bitmap = imageUtils.rotaingImageView(Degree, bitmap);                    //保存图片到SD卡                    //imageCompress.saveImage(bitmap, filename);                    imageCompress.saveImage(bitmap, filename,90);

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/***     * 动态设置inSampleSize 倍数     *      * @param pathName     *            图片路径     * @param reqWidth     *            要压缩的宽度     * @param reqHeight     *            要压缩的高度     * @return     */    public static Bitmap decodeSampledBitmapFromResource(String pathName,            int reqWidth, int reqHeight) {        // 首先设置 inJustDecodeBounds=true 来获取图片尺寸        final BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        BitmapFactory.decodeFile(pathName, options);        // 计算 inSampleSize 的值        options.inSampleSize = calculateInSampleSize(options, reqWidth,                reqHeight);        // 根据计算出的 inSampleSize 来解码图片生成Bitmap        options.inJustDecodeBounds = false;        return BitmapFactory.decodeFile(pathName, options);    }

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