+ (CGRect)contentSizeRectForTextView:(UITextView *)textView
{
[textView.layoutManager ensureLayoutForTextContainer:textView.textContainer];
CGRect textBounds = [textView.layoutManager usedRectForTextContainer:textView.textContainer];
CGFloat width = (CGFloat)ceil(textBounds.size.width + textView.textContainerInset.left + textView.textContainerInset.right);
CGFloat height = (CGFloat)ceil(textBounds.size.height + textView.textContainerInset.top + textView.textContainerInset.bottom);
return CGRectMake(0, 0, width, height);
}
这个方法, 就可以取到了
但是...如果你用了xib做cell, 并且! cell里有一上一下两个textview, 还是很蛋疼
只能把约束拖线出来, 算出高度,给约束的constant设值
