OC sets the image fillet, and the image is not deformed

1、 Setting fillet  

_iconImageV.layer.cornerRadius = _iconImageV.width/2;

_iconImageV.layer.masksToBounds = YES;

 

2、 Image loading without deformation   

    _img_cover.contentMode = UIViewContentModeScaleAspectFill;

    _img_cover.clipsToBounds = YES;