Android 源码VecotorDrawable

1	R.styleable.VectorDrawable_viewportWidth 该资源的名字并非VectorDrawable_viewportWidth 而是 attrs.xml 下的声明 <!-- Drawable used to draw vector paths. --> <declare-styleable name="VectorDrawable"> <!-- If set, specifies the color to apply to the drawable as a tint. By default, no tint is applied. May be a color state list. --> <attr name="tint" /> <!-- When a tint color is set, specifies its Porter-Duff blending mode. The default value is src_in, which treats the drawable as an alpha mask. --> <attr name="tintMode" /> <!-- Indicates if the drawable needs to be mirrored when its layout direction is RTL (right-to-left). --> <attr name="autoMirrored" /> <!-- The intrinsic width of the Vector Drawable. --> <attr name="width" /> <!-- The intrinsic height of the Vector Drawable. --> <attr name="height" /> <!-- The width of the canvas the drawing is on. --> <attr name="viewportWidth" format="float"/> <!-- The height of the canvas the drawing is on. --> <attr name="viewportHeight" format="float"/> <!-- The name of this vector drawable --> <attr name="name" /> <!-- The opacity of the whole vector drawable, as a value between 0 (completely transparent) and 1 (completely opaque). --> <attr name="alpha" /> </declare-styleable>	pathRenderer.mViewportWidth = a.getFloat( R.styleable.VectorDrawable_viewportWidth, pathRenderer.mViewportWidth);