android 10.0 SystemUI导航栏默认背景色的修改

1.在NavigationBarView 中 通过 NavigationBarTransitions 来实现背景色的设置

mBarTransitions = new NavigationBarTransitions(this);

而 NavigationBarTransitions 通过构造函数调用 父类BarTransitions 来设置背景色

public NavigationBarTransitions(NavigationBarView view) {super(view, R.drawable.nav_background);

BarTransitions

public class BarTransitions {private static final boolean