What is the name of the bottom bar of Android and how to manipulate it?

Question

In my application I removed the background from the status bar with the following code:

Window g = getWindow();
        g.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);

Screenshot of the status bar:

The status bar was with transparent background, but displaying information like schedule, battery, network, etc... How I would like.

But this command also removed the bottom bar background:

See that the bottom bar of the application was without background, extending the layout to the end of the screen, but displaying the 3 buttons: back button, Overview button and home button.

What I’d like to know:

• The name of this bottom bar (if you have)

• How to change the color of the 3 buttons that appear below (if possible)

• How can I add this bar back but keep bar status with transparent background

Answer 1

The name of this bar is "navigationBarColor".

On making the status bar transparent, follow this link: https://stackoverflow.com/questions/29311078/android-completely-transparent-status-bar