Drawing a round-dotted line or a dashed line with a shape drawable in Android requires you to disable hardware rendering due to some bugs. It also doesn't play nice with wrap_content. Let's not worry about that anymore.
You can use com.xfinity.dahdit.DottedLine or com.xfinity.dahdit.DashedLine as a view in XML. By default, the line will be drawn horizontally, with dots of diameter 4dp with minimum 2dp spacing.
The library will calculate the correct amount of spacing to add between dots in order to ensure the dots are flush to the ends of your included View.
The View can have the dot's radius, dash's height/width, the minimum gap between dots/dashes, the color, and the orientation of the line customized in XML.
Here's what the sample app looks like if you launch it:
Note the ImageView using wrap_content can't be seen at all. Meanwhile, all the dashed and dotted lines fit nicely, and flush their dots/dashes to the edge of their view.
DahDit is available on MavenCentral. To use DahDit, in your project build.gradle add
compile 'com.xfinity:dahdit:0.9.3'
