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)];

}

}