TextView自适应高度(解决_UITextContainer

对于自定义创建回复框, textView自适应高度, 根据textView.contentSize.height调节高度时, 有时候会有textView换行时文字跳动过高, 不是平滑过渡.

请参考一下代码:  [textView scrollRangeToVisible:NSMakeRange(0, 0)]; 能有效避免自适应高度时文字跳动不符的情况.

-(void)textViewDidChange:(UITextView *)textView{     

    NSInteger wordCount = textView.text.length;    

    self.textView.countNum = wordCount;       

     CGFloat height = textView_height;    

if (textView.contentSize.height < 150) {       

     if (textView.contentSize.height > 30) {            

        height = 85 + textView.contentSize.height;        

        }else{           

         height = textView_height;       

         }       

     self.textView.y = KScreenHeight - self.keybordHeight - height;        

    self.textView.h = height;      

      [textView scrollRangeToVisible:NSMakeRange(0, 0)];   

 } 

}