android 照片旋轉並儲存

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    /**     * 讀取圖片屬性：旋轉的角度     * @param path 圖片絕對路徑     * @return degree旋轉的角度     */    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;    } /*    * 旋轉圖片     * @param angle     * @param bitmap     * @return Bitmap     */    public Bitmap rotaingImageView(int angle , Bitmap bitmap) {         //旋轉圖片 動作          Matrix matrix = new Matrix();       matrix.postRotate(angle);       // 建立新的圖片          return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);     }/***     * 將bitmap儲存在SD jpeg格式     *      * @param bitmap     *            圖片bitmap     * @param filePath     *            要儲存圖片路徑     * @param quality     *            壓縮品質值     */    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();            // 如果圖片還沒有回收，強制回收            if (!bitmap.isRecycled()) {                bitmap.recycle();                System.gc();            }        } catch (Exception e) {        }    }bitmap=ImageCompress.decodeSampledBitmapFromResource(filename, 480, 800);                                        //圖片旋轉                    int Degree = imageUtils.readPictureDegree(filename);                    bitmap = imageUtils.rotaingImageView(Degree, bitmap);                    //儲存圖片到SD卡                    //imageCompress.saveImage(bitmap, filename);                    imageCompress.saveImage(bitmap, filename,90);

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/***     * 動態設定inSampleSize 倍數     *      * @param pathName     *            圖片路徑     * @param reqWidth     *            要壓縮的寬度     * @param reqHeight     *            要壓縮的高度     * @return     */    public static Bitmap decodeSampledBitmapFromResource(String pathName,            int reqWidth, int reqHeight) {        // 首先設定 inJustDecodeBounds=true 來擷取圖片尺寸        final BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        BitmapFactory.decodeFile(pathName, options);        // 計算 inSampleSize 的值        options.inSampleSize = calculateInSampleSize(options, reqWidth,                reqHeight);        // 根據計算出的 inSampleSize 來解碼圖片產生Bitmap        options.inJustDecodeBounds = false;        return BitmapFactory.decodeFile(pathName, options);    }

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android 照片旋轉並儲存