iOS开发笔记--UILabel和UITextView自适应文本高度代码

1.UITextView自适应高度

NSString *desContent=[dic objectForKey:[[dic allKeys] objectAtIndex:0]];//获取文本内容

CGRect orgRect=self.txtView.frame;//获取原始UITextView的frame

CGSize  size = [desContent sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(240, 2000) lineBreakMode:UILineBreakModeWordWrap];  

orgRect.size.height=size.height+10;//获取自适应文本内容高度

    self.txtView.frame=orgRect;//重设UITextView的frame

self.txtView.text=desContent;

2.UILabel自适应高度

NSString *desContent=[dic objectForKey:[[dic allKeys] objectAtIndex:0]];//获取文本内容


CGRect orgRect=self.label.frame;//获取原始UITextView的frame



CGSize  size = [desContent sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(240, 2000)lineBreakMode:UILineBreakModeWordWrap];  

orgRect.size.height=size.height+10;//获取自适应文本内容高度



[label  setNumberOfLines:0];   //numberoflines为0，即不做行数的限制

[label  setFrame: orgRect];   //重设UITextView的frame

[label setText: desContent];