导航标题用外部字体“FuturaStd Book”切碎

以下代码对齐 navigationItem 标题(仅适用于iOS 11-但导航后退和标题y位置不同)

NSMutableParagraphStyle *style =  [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
style.alignment = NSTextAlignmentCenter;
style.firstLineHeadIndent = 1.0f;
style.lineSpacing = 2; //Change spacing between lines
style.paragraphSpacing = 2; //Change space between paragraphs        

[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor blackColor],
                                                               NSBackgroundColorAttributeName:[UIColor clearColor],
                                                               NSFontAttributeName:[UIFont fontWithName:@"FuturaStd-Book" size:18],
                                                               NSParagraphStyleAttributeName: style }];

你必须使用 titleView 的 navigationItem . 在VC中尝试以下操作:

    UILabel * headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 400.0, 44.0)];
    headerLabel.textAlignment = NSTextAlignmentCenter;
    headerLabel.backgroundColor = [UIColor clearColor];
    headerLabel.text = @"Register";
    headerLabel.font = [UIFont fontWithName:@"FuturaStd-Book" size:16];
    headerLabel.textColor = [UIColor blackColor];
    self.navigationItem.titleView = headerLabel;

输出: