# tryParse method

Uri tryParse (String uri, [ int start = 0, int end ])

Creates a new `Uri` object by parsing a URI string.

If `start` and `end` are provided, they must specify a valid substring of `uri`, and only the substring from `start` to `end` is parsed as a URI. The `uri` must not be `null`.

Returns `null` if the `uri` string is not valid as a URI or URI reference.

## Implementation

    static Uri tryParse(String uri, [int start = 0, int end]) {
      // TODO: Optimize to avoid throwing-and-recatching.
      try {
        return parse(uri, start, end);
      } on FormatException {
        return null;
      }
    }