textview第一次出现不可滚动文本,但是点击出现键盘,键盘落下,就可以滚动问题

//****以下为解决第一次进入停诊公告编辑页面,textview不可滚动问题
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
NSString * strText = self.textViewRemark.text;
CGFloat h = [strText heightWithFont:[UIFont systemFontOfSize:16] withLineWidth:SCREEN_WIDTH-30-5];
self.textViewRemark.contentSize = CGSizeMake(0, h+10);

return [super hitTest:point withEvent:event];
}