| 标题 | 设置ios的uilabel动态高度方法 |
| 范文 | 开始的时候按钮事件中，可能写的是这样一段代码： if (isexpand) { [lblbrief setnumberoflines:2]; lblbrief.text = [stringutil substring:strbrief andsublength:90]; [btnbrief setimage:[uiimage imagenamed:@detailbriefdown] forstate:uicontrolstatenormal]; [btnbrief setimage:[uiimage imagenamed:@detailbriefdown] forstate:uicontrolstatehighlighted]; }else{ [lblbrief setnumberoflines:0]; lblbrief.text = strbrief; [btnbrief setimage:[uiimage imagenamed:@detailbriefup] forstate:uicontrolstatenormal]; [btnbrief setimage:[uiimage imagenamed:@detailbriefup] forstate:uicontrolstatehighlighted]; } 可以通过setnumberoflines:0,来让概述的所以内容显示出来，但如果，不计算所要显示全部内容的总高度，label的宽高是不会自动增大的。 else{ [lblbrief setnumberoflines:0]; lblbrief.text = strbrief; cgsize constraint = cgsizemake(self.view.frame.size.width - (15 * 2), 20000.0f); cgsize size = [strbrief sizewithfont:[uifont systemfontofsize:10]constrainedtosize:constraint linebreakmode:uilinebreakmodewordwrap]; [brief setframe:cgrectmake(15,160,size.width,size.height)]; [btnbrief setimage:[uiimage imagenamed:@detailbriefup]forstate:uicontrolstatenormal]; [btnbrief setimage:[uiimage imagenamed:@detailbriefup]forstate:uicontrolstatehighlighted]; } |
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