Android中如何通过代码绘制粗线条？调大stroke width仍无效附代码

Hey fellow dev! I feel your pain—there’s nothing more annoying than tweaking stroke-width values only to see zero change on the screen. Let’s break down some common fixes you can try right now, and once you drop your code snippet, we can nail down the exact problem.

Here are the top culprits to check:

• Wrong target element: If you’re working with SVG, make sure stroke-width is applied directly to the shape (like <path>, <rect>, <circle>) instead of a parent <svg> tag or container. For CSS-styled elements, confirm your selector is actually hitting the element you want (specificity conflicts are sneaky!).
• SVG coordinate system quirks: If your SVG uses a viewBox or has transforms applied, the stroke width might scale unexpectedly. Try temporarily removing transforms or adjusting the viewBox to see if that fixes the visibility.
• Canvas drawing order: If you’re using HTML5 Canvas, you need to set context.lineWidth before calling context.stroke()—setting it after drawing the shape won’t retroactively change the stroke.
• Inherited styles: Check if parent elements have CSS properties like stroke set to none or transparent, which could override your width settings even if you increase the value.

Once you share your code (wrap it in backticks for readability!), we can dive deeper into what’s going on.

内容的提问来源于stack exchange，提问作者someguy3213