/** 
   * 讀取照片exif信息中的旋轉(zhuǎn)角度 
   * @param path 照片路徑 
   * @return角度 
   */ 
  public static 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; 
  } 

public static Bitmap toturn(Bitmap img){ 
    Matrix matrix = new Matrix(); 
    matrix.postRotate(+90); /*翻轉(zhuǎn)90度*/ 
    int width = img.getWidth(); 
    int height =img.getHeight(); 
    img = Bitmap.createBitmap(img, 0, 0, width, height, matrix, true); 
    return img; 
}