有时候textView在表单里面输入，就要有高度自适应，那该怎么处理呢
解决方法：
CGRect frame = textView.frame;
CGSize constraintSize = CGSizeMake(frame.size.width, MAXFLOAT);
CGSize size = [textView sizeThatFits:constraintSize];
NSInteger length = size.height;
NSInteger lines = length / kFont(14).lineHeight;
NSInteger targetlines = (self.height - 38) / kFont(14).lineHeight;//38 == textView.frame.origin.x
if(targetlines != lines){
CGRect rect = textView.frame;
rect.size = size;
textView.frame = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, size.height);
if(self.selectBlock){
self.selectBlock(rect.size.height);
}
}
//block回调
[xx setSelectBlock:^(CGFloat height){
@strongify_self;
//[self.viewModel writeSummaryCellHeight:height+38 index:index];
[self.tableView beginUpdates];
[self.tableView endUpdates];
}];
