335         final ViewTreeObserver observer = getView().getViewTreeObserver();  in setCallCardVisible()  local
336         observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {  in setCallCardVisible()
340                 if (observer.isAlive()) {  in setCallCardVisible()
341                     observer.removeOnPreDrawListener(this);  in setCallCardVisible()
1035         final ViewTreeObserver observer = getView().getViewTreeObserver();  in animateForNewOutgoingCall()  local
1039         observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {  in animateForNewOutgoingCall()
1042                 final ViewTreeObserver observer = getView().getViewTreeObserver();  in animateForNewOutgoingCall()
1043                 if (!observer.isAlive()) {  in animateForNewOutgoingCall()
1046                 observer.removeOnGlobalLayoutListener(this);  in animateForNewOutgoingCall()
1133         final ViewTreeObserver observer = parent.getViewTreeObserver();  in onResume()  local
1137                 ViewTreeObserver viewTreeObserver = observer;  in onResume()
1159                         final ViewTreeObserver observer = mSecondaryCallInfo.getViewTreeObserver();  in updateFabPositionForSecondaryCallInfo()
1160                         if (!observer.isAlive()) {  in updateFabPositionForSecondaryCallInfo()
1163                         observer.removeOnGlobalLayoutListener(this);  in updateFabPositionForSecondaryCallInfo()