我尝试使用FirstLineHeadIndent，但是当我使用时，该字符串将被截断。
NSString *string = @"hello，i am aaa，123456 my name is";
UIFont *textFont = [UIFont systemFontOfSize:15];
self.textView = [UILabel new];
_textView.backgroundColor = [UIColor clearColor];
[self.view addSubview:_textView];
_textView.numberOfLines = 0;
NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
paragraphStyle.lineHeightMultiple = 1.4;
[paragraphStyle setLineSpacing:4];
[paragraphStyle setFirstLineHeadIndent:30];
[paragraphStyle setAlignment:NSTextAlignmentJustified];
[paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:string attributes:@{NSParagraphStyleAttributeName:paragraphStyle,NSFontAttributeName:textFont,NSForegroundColorAttributeName:[UIColor darkGrayColor]}];
[_textView setAttributedText:string];
拦截的结果是你好，我是aaa，123456我的。
关于第一线收回，我错了吗？谢谢！