已解决问题

1. Android 8 download目录选择文件崩溃
2. 华为手机选择本地文件得到的uri拿不到路径，
   样式： 为 content://com.huawei.hidisk.fileprovider/root 开头的uri 获取路径失败
   content://com.huawei.hidisk.fileprovider/root/storage/emulated/0/Lidas/NewFile637402773210461554.txt

 public class FileInfoUtils {  
      /**
     * Android 4.4往后版本 ，其中区别在 8.0download目录报错修改，华为手机uri获取不到路径处理。
     */
    @SuppressLint("NewApi")
    public static String getPath(final Context context, final Uri uri) {
        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
        // DocumentProvider
        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                }
            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {
                final String id = DocumentsContract.getDocumentId(uri);
                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O){//判断有没有超过android 8，区分开来，不然崩溃崩溃崩溃崩溃
                    final Uri contentUri = ContentUris.withAppendedId(
                            Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
                    return getDataColumn(context, contentUri, null, null);
                }else{
                    final String[] split = id.split(":");
                    if (split.length>=2){
                        return split[1];
                    }
                }
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }

                final String selection = "_id=?";
                final String[] selectionArgs = new String[]{split[1]};

                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {
            // Return the remote address
                /*if (isGooglePhotosUri(uri)) {
                    return uri.getLastPathSegment();
                } else*/
              //判断华为手机的uri，重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点重点
            if (isHuaWeiUri(uri)) {
                String uriPath = uri.getPath();
                //content://com.huawei.hidisk.fileprovider/root/storage/emulated/0/Android/data/com.xxx.xxx/
                if (uriPath != null && uriPath.startsWith("/root")) {
                    return uriPath.replaceAll("/root", "");
                }
            }
            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }
        return null;
    }

    public static String getDataColumn(Context context, Uri uri, String selection,
                                       String[] selectionArgs) {
        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {column};
        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
                    null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(column_index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;

    }

    

    public static boolean isGooglePhotosUri(Uri uri) {
        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
    }

    public static boolean isHuaWeiUri(Uri uri) {
        return "com.huawei.hidisk.fileprovider".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */


    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());

    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     */


    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());

    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */


    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());

    }

    /**
     * 获取真实路径
     *
     * @param context
     * @param uri
     * @return
     */
    public static String getRealFilePath(Context context, final Uri uri) {
        if (null == uri)
            return null;
        final String scheme = uri.getScheme();
        String data = null;
        if (scheme == null)
            data = uri.getPath();
        else if (ContentResolver.SCHEME_FILE.equals(scheme)) {
            data = uri.getPath();
        } else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {
            Cursor cursor = context.getContentResolver().query(uri, new String[]{MediaStore.Images.ImageColumns.DATA}, null, null, null);
            if (null != cursor) {
                if (cursor.moveToFirst()) {
                    int index = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
                    if (index > -1) {
                        data = cursor.getString(index);
                    }
                }
                cursor.close();
            }
        }
        return data;
    }


  

}