Ios_ dynamically determine label width based on word count

Ios_ dynamically determine label width based on word count

IOS7 replaces obsolete iOS6-(cgsize) Sizewithfont with the following method: (Uifont *) Font method

-(Cgsize) Sizewithattributes: (Nsdictionary *) attrs;

// iOS7_API_根据文字 字数动态确定Label宽高 // 设置Label的字体 HelveticaNeue  Courier UIFont *fnt = [UIFont fontWithName:@ "HelveticaNeue" size: 24 .0f]; _nameLabel.font = fnt; // 根据字体得到NSString的尺寸 CGSize size = [_nameLabel.text sizeWithAttributes:[NSDictionary dictionaryWithObjectsAndKeys:fnt,NSFontAttributeName, nil]]; // 名字的H CGFloat nameH = size.height; // 名字的W CGFloat nameW = size.width; _nameLabel.frame = CGRectMake( 0 ,  0 , nameW,nameH);

IOS7 uses the following method BoundingRectWithSize:options:attributes:context: Instead of sizewithfont:constrainedtosize in obsolete iOS6: Linebreakmode: Method

// 根据正文内容多少,动态确定正文content的frame

          // 宽度W      CGFloat contentW = self.bounds.size.width - _content.frame.origin.x - kMargin;      // label的字体 HelveticaNeue  Courier      UIFont *fnt = [UIFont fontWithName:@ "HelveticaNeue" size: 18 .0f];      _content.font = fnt;      _content.numberOfLines =  0 ;      _content.lineBreakMode = NSLineBreakByWordWrapping;      // iOS7中用以下方法替代过时的iOS6中的sizeWithFont:constrainedToSize:lineBreakMode:方法      CGRect tmpRect = [_content.text boundingRectWithSize:CGSizeMake(contentW,  1000 ) options:NSStringDrawingUsesLineFragmentOrigin attributes:[NSDictionary dictionaryWithObjectsAndKeys:fnt,NSFontAttributeName, nil] context:nil];           // 高度H      CGFloat contentH = tmpRect.size.height;      NSLog(@ "调整后的显示宽度:%f,显示高度:%f" contentW,contentH);      _content.frame = CGRectMake( 0 ,  0 , contentW,contentH);

Ios_ dynamically determine label width based on word count