【Android】图片显示旋转问题

读取图片旋转角度

 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;  
   }  

旋转图片

 public static Bitmap rotaingImageView(int angle , Bitmap bitmap) {  
        //旋转图片 动作  
        Matrix matrix = new Matrix();;  
        matrix.postRotate(angle);  
        System.out.println("angle2=" + angle);  
        // 创建新的图片  
        Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,  
                bitmap.getWidth(), bitmap.getHeight(), matrix, true);  
        return resizedBitmap;  
    }