旋转手机拍照的图片

第一步获取图片旋转的角度

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;
    }

根据得到的图片的旋转角度，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);
        // 创建新的图片
        Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        return resizedBitmap;
    }

使用实例

int degree = Yutils.readPictureDegree(filePath);
                    Bitmap newbitmap = BitmapFactory.decodeFile(filePath);
                    Bitmap photo_temp =Yutils.rotaingImageView(degree, newbitmap);