CGRect f = self.myTextView.frame;
f.size.height += 1;
[self.myTextView setFrame:f];

因为我的 UITextView 已经在 XIB 文件中，所以我只是将现有高度修改了 1px 和 viola.正如@larsacus 指出的那样，只有当模块的宽度超过 512px 时才需要这样做.

Because my UITextView is already in a XIB file I just modify the existing height by 1px and viola. As @larsacus pointed out, this is only necessary when the module's width is over 512px.