- (void)viewDidLoad
{
    [super viewDidLoad];

    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    paragraphStyle.lineHeightMultiple = 50.f;
    paragraphStyle.lineSpacing = 100.f;
    paragraphStyle.minimumLineHeight = 200.f;
    paragraphStyle.maximumLineHeight = 500.f;

    UIFont *font = [UIFont fontWithName:@"AmericanTypewriter" size:24.f];

    self.textView.attributedText = [[NSAttributedString alloc] initWithString:
    @"This is a test.n Will I pass?" attributes:
    @{NSParagraphStyleAttributeName : paragraphStyle, NSFontAttributeName : font}];
}

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.minimumLineHeight = 35.f;
paragraphStyle.maximumLineHeight = 35.f;

UIFont *font = [UIFont fontWithName:@"AmericanTypewriter" size:18.f];
NSString *string = @"This is a test.nWill I pass?n日本語のもじもあるEnglishnEnglish y Español";
NSDictionary *attributtes = @{
    NSParagraphStyleAttributeName : paragraphStyle,
};
self.textView.font = font;
self.textView.attributedText = [[NSAttributedString alloc] initWithString:string
                                 attributes:attributtes];