/** 
  * 读取照片exif信息中的旋转角度 
  * @param path 照片路径 
  * @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); /*翻转90度*/ 
  int width = img.getWidth(); 
  int height =img.getHeight(); 
  img = Bitmap.createBitmap(img, 0, 0, width, height, matrix, true); 
  return img; 
 }