Results 4 comments of jiawei

@zwkcoding yes,you're right the cost value that is less than INSCRIBED_INFLATED_OBSTACLE is not safe.I have found this and then I change the `map_[nbr] < INSCRIBED_INFLATED_OBSTACLE` to `map_[nbr] < 128` according...

@paulbovbel thank you for your reply! But on my opinion, the performance breath-first-search algorithm is not ideal when the costmap updates it's values with inflation_layer . when my robot try...

you can set Expand floating button horizontally if you cancel the set of the attributes of labels fab:fab_labelsPosition and fab:fab_labelStyle then ,you can set fab:fab_expandDirection="left"

```` ``` this is my layout,you will see the layout like this ![floatingButton.png](http://upload-images.jianshu.io/upload_images/635586-f199441fa54dc2ed.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) and I added the textview in the floatingActionButton,you can delete it if you don't need them. this...