Android:在画布上绘制视图 [英] Android: Draw a view on canvas

问题描述

我的视图膨胀了，可以在画布上绘制它，但似乎无法正确放置它.

I have a view inflated, I can draw it on canvas, but can't seem to position it properly.

LayoutInflater li = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = li.inflate(R.layout.fix_this_recommendation, null);
v.measure(MeasureSpec.getSize(v.getMeasuredWidth()), MeasureSpec.getSize(v.getMeasuredHeight()));
v.layout(400, 400, 400, 400);
v.draw(canvas);

但是视图始终位于左上角.有人知道为什么吗?

But the view is always at the top left corner. Anyone know why?

推荐答案

每个视图都在其自己的坐标系中绘制其内容，左上角为(0，0).如果您希望它显示在其他位置，则可以设置一个新的

Each View draws its contents within its own coordinate system, with (0, 0) at the top-left. If you want it to appear elsewhere, you can set a new transformation matrix on your Canvas.

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