blocks|key|4617792|text|从当前变换矩阵中提取比例，并使用该比例的倒数来设置笔划宽度。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4617793|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Extract the scale from the current transformation matrix and use the inverse of that to set your stroke width.

blocks|key|3150837|text|这是一个愚蠢的答案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3150838|将你的笔划画X次，w=0并列在一起。|3150839|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

This is a silly answer:

Draw your strokes X number of times with w = 0 next to each other.

blocks|key|3150844|text|您可能需要在自定义SVG对象中跟踪您的宽度。当对象缩放时，您可以找到新宽度与初始大小之间的比率，并将其乘以初始笔划宽度。它不一定是宽度，它很可能是高度或对角线。这取决于对象的缩放方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3150845|或者，您可以查看这是否已经完成了您想要的操作：|3150846|http://code.google.com/p/svg-android/|offset|length|3150847|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|11|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@$F|R|G|S|1|T]]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|E]]]]

You will probably need to keep track of your width in a custom SVG object. As the object is scaled you can find the ratio between the new width and that of the initial size and multiply that to your initial stroke width. It doesn't have to be width, it could very much well be height or diagonal. It depends on how your object is scaling.

Or you could see if this already does what you want:

<a href="http://code.google.com/p/svg-android/" rel="nofollow">http://code.google.com/p/svg-android/</a>

blocks|key|4617824|text|由于解决方案包括扩展类，因此我将发布详细信息。我没有广泛地测试它，但只在我需要它的上下文中进行了测试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4617825|我想从像Picture.recording()工作方式这样的操作列表中得到一个可绘制的。|4617826|幸运的是，Path对象可以记录这些操作，然后我们可以将它们绘制到画布中。|4617827|不幸的是，通过canvas.drawPath()绘制它不提供无缩放笔划功能。|4617828|多亏了@Andrew给出的提示，我在onResize()中使用了一些不同的逻辑扩展了类似于PathShape的Shape。|4617829|public+class+NonScalingStrokePathShape+extends+Shape{
++++private+Path++++mPath;
++++private+float+++mInitialWidth;
++++private+float+++mInitialHeight;
++++private+float+++mCurrentWidth;++++
++++private+float+++mCurrentHeight;++++

++++public+NonScalingStrokePathShape(Path+pPath,+float+pInitialWidth,+float+pInitialHeight)+{
++++++++mPath+=+pPath;
++++++++mInitialWidth+=+pInitialWidth;
++++++++mInitialHeight+=+pInitialHeight;
++++++++mCurrentWidth+=+mInitialWidth;
++++++++mCurrentHeight+=+mInitialHeight;
++++}

++++@Override
++++public+void+draw(Canvas+canvas,+Paint+paint)+{
++++++++canvas.drawPath(mPath,paint);
++++}

++++@Override
++++protected+void+onResize(float+width,+float+height)+{
++++++++Matrix+matrix+=+new+Matrix();
++++++++matrix.setScale(width+/+mCurrentWidth,+height+/+mCurrentHeight);
++++++++mCurrentWidth+=+width;
++++++++mCurrentHeight+=+height;
++++++++mPath.transform(matrix);
++++}

++++@Override
++++public+NonScalingStrokePathShape+clone()+throws+CloneNotSupportedException+{
++++++++NonScalingStrokePathShape+shape+=+(NonScalingStrokePathShape)+super.clone();
++++++++shape.mPath+=+new+Path(mPath);
++++++++shape.mInitialHeight+=++mInitialHeight;
++++++++shape.mInitialWidth+=+mInitialWidth;
++++++++shape.mCurrentWidth+=+mInitialWidth;
++++++++shape.mCurrentHeight+=+mInitialHeight;
++++++++return+shape;
++++}

}|code-block|syntax|javascript|4617830|这可以在ShapeDrawable中使用，这是一个通过调用Shape+resize(float+w，float+h)方法已经考虑了边界大小调整的可绘制图形。|4617831|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|X|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

As the solution includes extending a class I will post the details. I've not tested it extensively but only in the context I needed it. 
I wanted to get a Drawable from a list of actions like the way Picture.recording() works. 
Fortunately a Path object can record the actions, and then we can paint them into a canvas. 
Unfortunately painting it via canvas.drawPath() does not provide the no-scaling-stroke functionality. 

So thanks to the hint given by @Andrew, I've extended Shape similarly to PathShape but with some different logic in onResize()

<pre><code>public class NonScalingStrokePathShape extends Shape{
 private Path mPath;
 private float mInitialWidth;
 private float mInitialHeight;
 private float mCurrentWidth; 
 private float mCurrentHeight; 

 public NonScalingStrokePathShape(Path pPath, float pInitialWidth, float pInitialHeight) {
 mPath = pPath;
 mInitialWidth = pInitialWidth;
 mInitialHeight = pInitialHeight;
 mCurrentWidth = mInitialWidth;
 mCurrentHeight = mInitialHeight;
 }

 @Override
 public void draw(Canvas canvas, Paint paint) {
 canvas.drawPath(mPath,paint);
 }

 @Override
 protected void onResize(float width, float height) {
 Matrix matrix = new Matrix();
 matrix.setScale(width / mCurrentWidth, height / mCurrentHeight);
 mCurrentWidth = width;
 mCurrentHeight = height;
 mPath.transform(matrix);
 }

 @Override
 public NonScalingStrokePathShape clone() throws CloneNotSupportedException {
 NonScalingStrokePathShape shape = (NonScalingStrokePathShape) super.clone();
 shape.mPath = new Path(mPath);
 shape.mInitialHeight = mInitialHeight;
 shape.mInitialWidth = mInitialWidth;
 shape.mCurrentWidth = mInitialWidth;
 shape.mCurrentHeight = mInitialHeight;
 return shape;
 }

}
</code></pre>

This can be used in a ShapeDrawable, which is a Drawable that already takes bounds resizing into account by calling the Shape resize(float w, float h) method.

I have a Canvas that comes from a Picture beginRecording() method. 
I record things in the canvas and then call endRecording(). 
I would like to be able to record strokes that will not scale when the canvas is scaled afterwards. 
I cannot see something like that in the Paint class. You can setStrokeWidth(float w), but: 
- If w == 0 you have something like the functionality I want, but only with 1px 
- If w != 0, canvas scaling means stroke scaling too. 
Any ideas?

Something like SVG non-scaling-stroke in Android?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个来自图片beginRecording()方法的画布。我在画布中记录内容，然后调用endRecording()。我希望能够记录笔划，将不会缩放时，画布缩放后。我在Paint类中看不到这样的东西。您可以浮点(SetStrokeWidth w)，但是：If w == 0你有我想要的功能，但只有当w != 0时才有1px，画布缩放也意味着笔划缩放。有什么想法吗？

问比如Android中的SVG non-scaling-stroke？
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