Null check on NavigationBarView in NavigationBarFragment

While sysui is starting, it's possible to get disable callbacks before
the NavigationBarView has had a chance to get created. In this case just
don't pass the message, similar to Disable1 callbacks

Change-Id: Ic89ca281579ff9720c356f79102d1b576670740a
Fixes: 118357487
Test: no exceptions during system boot after wiping

parent bd70ed4c

packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarFragment.java

+3 −1

Original line number	Diff line number	Diff line
		@@ -478,8 +478,10 @@ public class NavigationBarFragment extends Fragment implements Callbacks {

		private void setDisabled2Flags(int state2) {
		// Method only called on change of disable2 flags
		if (mNavigationBarView != null) {
		mNavigationBarView.getRotateSuggestionButton().onDisable2FlagChanged(state2);
		}
		}

		// ----- Internal stuffz -----