scwang90/SmartRefreshLayout · error · RuntimeException

Error in parsing ${pathData}

Error message

Error in parsing ${pathData}

What it means

Thrown when PathDataNode.nodesToPath() fails while converting parsed SVG path-data nodes into an android.graphics.Path. The path string was tokenized into nodes, but applying them to the Path object raised a RuntimeException (e.g. malformed command sequence, too few parameters for a command, or an unsupported construct). The original pathData string is embedded in the message to help identify the offending input.

Source

Thrown at refresh-drawable-path/src/main/java/com/scwang/smart/drawable/path/PathParser.java:186

                    val[k + 5] *= ratioWidth;
                    val[k + 6] *= ratioHeight;
                    break;
            }
        }
    }

    /**
     * @param pathData The string representing a path, the same as "d" string in svg file.
     * @return the generated Path object.
     */
    public static Path createPathFromPathData(String pathData) {
        Path path = new Path();
        PathDataNode[] nodes = createNodesFromPathData(pathData);
        if (nodes != null) {
            try {
                PathDataNode.nodesToPath(nodes, path);
            } catch (RuntimeException e) {
                throw new RuntimeException("Error in parsing " + pathData, e);
            }
            return path;
        }
        return null;
    }

    /**
     * @param pathData The string representing a path, the same as "d" string in svg file.
     * @return an array of the PathDataNode.
     */
    public static PathDataNode[] createNodesFromPathData(String pathData) {
        if (pathData == null) {
            return null;
        }
        int start = 0;
        int end = 1;

        List<PathDataNode> list = new ArrayList<>();

View on GitHub (pinned to 224db48f8a)

Solutions

1. Validate the 'd' string against the full SVG path grammar before passing it (a lint/regex pass or rendering it in a tool like Inkscape/browser first).
2. Check the embedded pathData in the exception message for missing parameters — most often a command letter with fewer numbers than it requires.
3. Ensure numbers are formatted with Locale.US ('.' decimal separator) when the string is generated programmatically.
4. Wrap createPathFromPathData in a try-catch and fall back to a default drawable/header so one bad path does not crash the app.
5. If the path uses advanced SVG features, simplify it (convert arcs/transforms in a vector editor and re-export as plain M/L/C/Z commands).

Example fix

// before
Path path = PathParser.createPathFromPathData("M10,10 L40"); // L needs 2 coords -> crash

// after
Path path;
try {
    path = PathParser.createPathFromPathData("M10,10 L40,40");
} catch (RuntimeException e) {
    path = new Path(); // or load a bundled fallback vector drawable
}

// Quick sanity check: known commands, balanced params, before calling the parser
boolean looksLikeValidPath(String d) {
    if (d == null || d.trim().isEmpty()) return false;
    if (!d.matches("[MmLlHhVvCcSsQqTtAaZz0-9,\\s.+-]+")) return false;
    return d.trim().matches("^[Mm].*"); // must start with a moveto
}
if (looksLikeValidPath(pathData)) {
    path = PathParser.createPathFromPathData(pathData);
}

Path path;
try {
    path = PathParser.createPathFromPathData(pathData);
} catch (RuntimeException e) {
    Log.w(TAG, "Bad path data: " + pathData, e);
    path = new Path(); // or a bundled fallback vector
}

When it happens

Trigger: Calling PathParser.createPathFromPathData(pathData) with an SVG 'd' string that parses into nodes but fails during Path construction: commands with missing/extra parameters (e.g. 'L' with one coordinate), relative commands that underflow, nested or repeated command letters in wrong order, or locale-generated strings using ',' decimal separators.

Common situations: Hand-writing or dynamically building an SVG path string for a refresh header/footer drawable; copying an SVG 'd' attribute that contains arcs (A) or implicit-repeat syntax not handled identically by this parser; formatting floats with String.format in a locale like de/fr producing '3,5' instead of '3.5'; truncating a path string from a designer's SVG export.

Related errors

• error in parsing "${s}"
• 最多只支持3个子View，Most only support three sub view
• DefaultRefreshHeaderCreator can not return null
• DefaultRefreshFooterCreator can not return null

AI-assisted analysis of scwang90/SmartRefreshLayout@224db48f8a (2026-08-14). Data as JSON: /api/errors/6e4b1d2891da3e7e. Report an issue: GitHub.