question: private void refreshMuteVideoButton ( ) { if ( ( null != mCall ) && mCall . isVideo ( ) ) { mMuteLocalCameraView . setVisibility ( View . VISIBLE ) ; boolean isMuted = mCall . isVideoRecordingMuted ( ) ; Log . d ( LOG_TAG , "## refreshMuteVideoButton(): isMuted=" + isMuted ) ; int iconId = isMuted ? R . drawable . ic_material_videocam_off_pink_red : R . drawable . ic_material_videocam_off_grey ; mMuteLocalCameraView . setImageResource ( iconId ) ; } else { Log . d ( LOG_TAG , "## refreshMuteVideoButton(): View.INVISIBLE" ) ; mMuteLocalCameraView . setVisibility ( View . INVISIBLE ) ; } }
target:  Update the mute video icon.