NSString *textStr = @"iPhone規定：任何應用想訪問麥克風，必須被授權麥克風服務。請進入“設定”->“隱私”->“麥克風”中開啟QQ空間的麥克風服務。";
        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;
        
        // 調整行間距
        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];