如何将导航栏标题更改为图像？其他方法没有奏效

I have tried the code below and the answer to multiple other questions on Stackoverflow and I still cannot get this to work.. I know the image Profile exists in my assets folder. I have made outlets from my navigation bar and navigation item and tried using that but still got nothing. At most the text I have on the title will disappear...I feel as though I am missing something all together.I have tried the code below and the answer to m