我在 static UITableViewCell 中有一个 UIView 。我在 view 中添加了高度 constraint 。我认为,动画 views 高度变化的正确方法是这样的:
self.myViewsHeightConstraint.constant = 100; // Coming from 0 and vice versa
[UIView animateWithDuration:0.3f animations:^{
[self.view layoutIfNeeded];
}];
我将 tableView 行高设置为:
tableView.estimatedRowHeight = 40;
self.tableView.rowHeight = UITableViewAutomaticDimension;
现在我需要更新 cells 高度。所以我认为 begin /endUpdate 是合适的。当 veiw 和 cell 对其高度进行动画处理时,它们不会同步,因此由于它们的动画时间不完全相同,我收到以下警告:
Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSLayoutConstraint:0x7f8d62d15670 V:[tagResultTableView:0x7f8d62d901a0(107)]>",
"<NSLayoutConstraint:0x7f8d62cea010 tagResultTableView:0x7f8d62d901a0.top == UITableViewCellContentView:0x7f8d62d8fd50.topMargin - 8>",
"<NSLayoutConstraint:0x7f8d62cf0760 V:[tagResultTableView:0x7f8d62d901a0]-(8)-[UILabel:0x7f8d62d2e2e0'Limit: Up to 5 tags']>",
"<NSLayoutConstraint:0x7f8d62cf0800 UILabel:0x7f8d62d2e2e0'Limit: Up to 5 tags'.bottom == UITableViewCellContentView:0x7f8d62d8fd50.bottomMargin>",
"<NSLayoutConstraint:0x7f8d62f726d0 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7f8d62d8fd50(32)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8d62d15670 V:[tagResultTableView:0x7f8d62d901a0(107)]>
如果我的逻辑是正确的,我怎么能在同一时间为它们设置动画。或者我怎样才能为它们设置动画,以免出现错误?
Best Answer-推荐答案 strong>
如果您想确保 Cell 保持静态且不更改,请执行此方法:
- (CGFloat)tableViewUITableView *)tableView heightForRowAtIndexPathNSIndexPath *)indexPath{}
并且里面有一个return语句,返回单元格高度的最终值。
关于ios - 更改 UITableViewCell 大小给我一个错误,我们在Stack Overflow上找到一个类似的问题:
https://stackoverflow.com/questions/31152124/
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