Method query

android/src/FileProvider.java:53–85

(Uri uri, String[] projection, String selection,
                      String[] selectionArgs, String sortOrder)

  }

  @Override
  public Cursor query(Uri uri, String[] projection, String selection,
                      String[] selectionArgs, String sortOrder) {
    final File file = getFileForUri(uri);
    if (file == null)
      throw new IllegalArgumentException("File not found");

    String displayName = uri.getQueryParameter(DISPLAYNAME_FIELD);

    if (projection == null) {
      projection = COLUMNS;
    }

    String[] cols = new String[projection.length];
    Object[] values = new Object[projection.length];
    int i = 0;
    for (String col : projection) {
      if (OpenableColumns.DISPLAY_NAME.equals(col)) {
        cols[i] = OpenableColumns.DISPLAY_NAME;
        values[i++] = (displayName == null) ? file.getName() : displayName;
      } else if (OpenableColumns.SIZE.equals(col)) {
        cols[i] = OpenableColumns.SIZE;
        values[i++] = file.length();
      }
    }

    cols = copyOf(cols, i);
    values = copyOf(values, i);

    final MatrixCursor cursor = new MatrixCursor(cols, 1);
    cursor.addRow(values);
    return cursor;
  }

  @Override
  public String getType(Uri uri) {