Android Uri 转Path

点击选择相册中的视频，获取所有本地视频文件。点击获取相册中的视频是正常的，但是获取文件管理中的视频时，会出现根据Uri找不到存储路径的问题。

在Android Uri 转 Path的过程中，发现在查询文件管理中的视频时，通过Uri查询系统媒体库得到的存储路径为null，但是可以通过拼接的方式来得到存储路径。

//Uri为：content://com.android.fileexplorer.myprovider/external_files/DCIM/Camera/VID_20201230_162057.mp4
private static String getMediaPathFromUri(Context context, Uri uri, String selection, String[] selectionArgs) {
        String path;
        String authroity = uri.getAuthority();
        path = uri.getPath(); //重点
        //方式一：拼接
        String sdPath = Environment.getExternalStorageDirectory().getAbsolutePath(); // /storage/emulated/0
        if (!path.startsWith(sdPath)) {
        //path:::/external_files/DCIM/Camera/VID_20201230_162057.mp4
            int sepIndex = path.indexOf(File.separator, 1); //15
            if (sepIndex == -1) path = null;
            else {
                path = sdPath + path.substring(sepIndex);
            }
        }
        //方式二：从数据库查询
        if (path == null || !new File(path).exists()) {
            ContentResolver resolver = context.getContentResolver();
            String[] projection = new String[]{MediaStore.MediaColumns.DATA};
            Cursor cursor = resolver.query(uri, projection, selection, selectionArgs, null);
            if (cursor != null) {
                if (cursor.moveToFirst()) {
                    try {
                        int index = cursor.getColumnIndexOrThrow(projection[0]);
                        if (index != -1) path = cursor.getString(index);
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                        path = null;
                    } finally {
                        cursor.close();
                    }
                }
            }
        }
        return path;
    }

参考文章：
https://blog.csdn.net/chy555chy/article/details/104198956