NSString *textStr = @"iPhone规定:任何应用想访问麦克风,必须被受权麦克风服务。请进入“设置”->“隐私”->“麦克风”中打开QQ空间的麦克风服务。"; UIFont *textFont = [UIFont systemFontOfSize:14]; CGSize textSize = [textStr sizeWithFont:textFont constrainedToSize:CGSizeMake(bounds.size.width - 40, QZONE_SCREEN_HEIGHT)];; UILabel *openMicPrivilegeTipsLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, textSize.width, textSize.height)]; openMicPrivilegeTipsLabel.textColor = DefaultDescriptionText2ColorInDefaultTheme; openMicPrivilegeTipsLabel.text = textStr; openMicPrivilegeTipsLabel.backgroundColor = [UIColor clearColor]; openMicPrivilegeTipsLabel.textAlignment = UITextAlignmentLeft; openMicPrivilegeTipsLabel.font = [UIFont systemFontOfSize:14]; openMicPrivilegeTipsLabel.numberOfLines = 0; // 调整行间距 NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:textStr]; NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init]; [paragraphStyle setLineSpacing:6]; [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [textStr length])]; openMicPrivilegeTipsLabel.attributedText = attributedString; [_tipsBG addSubview:openMicPrivilegeTipsLabel]; [openMicPrivilegeTipsLabel sizeToFit];