我在从下载管理器中选择文档文件时遇到IllegalArgumentException,这只发生在Oreo上

我在这里附上日志:

   Caused by: java.lang.IllegalArgumentException: Unknown URI: content://downloads/public_downloads/1587
    at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:165)
    at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
    at android.content.ContentProviderProxy.query(ContentProviderNative.java:418)

我使用的代码运行良好,但对于下载管理器,它在“try”块的第一行引发异常

 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;

我已经试过了: Android getting file path from content URI using contentResolver 而这: java.lang.IllegalArgumentException: Unknown URI content 还有一些和这个问题有关,但没有一个能解决我的问题。