.m

    // 视图自适应屏幕宽度
    CGRect frame = self.view.frame;
    frame.size.width = UIScreen.mainScreen.bounds.size.width;
    self.view.frame = frame;
    [self.view layoutIfNeeded];
    
    // 单元格自适应屏幕宽度
    CGRect frame = self.frame;
    frame.size.width = UIScreen.mainScreen.bounds.size.width;
    self.frame = frame;
    [self layoutIfNeeded];