我的UIViewController拆分为2:
我已向表格添加了页脚视图,以隐藏表格的其余部分。 由于我不能使用静态单元格并且还隐藏了表格的所有底部视图,所以我做得有点棘手。
但是当我正确点击我的文本字段时,表格视图没有滚动到顶部。
键盘隐藏了UITextField,并且没有滚动到正确的位置。
我该如何解决?
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return 6;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *identifier;
if (indexPath.row == 0) identifier = @"cell_name";
else if (indexPath.row == 1) identifier = @"cell_password";
else if (indexPath.row == 2) identifier = @"cell_password_verify";
else if (indexPath.row == 3) identifier = @"cell_email";
else if (indexPath.row == 4) identifier = @"cell_cellphone";
else if (indexPath.row == 5) identifier = @"cell_social";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier forIndexPath:indexPath];
if (cell == nil) cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
return cell;
}
- (void)configureUI
{
UIView *tableFooterView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth([UIScreen mainScreen].bounds), 1)];
tableFooterView.backgroundColor = [UIColor whiteColor];
self.tableView.tableFooterView = tableFooterView;
tableFooterView.backgroundColor = [UIColor whiteColor];
self.tableView.tableFooterView = tableFooterView;
self.edgesForExtendedLayout = UIRectEdgeNone;
self.extendedLayoutIncludesOpaqueBars = NO;
self.automaticallyAdjustsScrollViewInsets = NO;
}
更新
问题是,滚动视图无法滚动,因为tableFooterView
太短,然后我修改了我的代码。
基本上,@ Roger Nolan对,我还添加了以下代码,现在它完美无缺:
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
UITableViewCell *cell = (UITableViewCell *)textField.superview.superview.superview;
[self.tableView scrollToRowAtIndexPath:[self.tableView indexPathForCell:cell] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
- (void)registerObservers
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardDidShow:)
name:UIKeyboardDidShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardDidHide:)
name:UIKeyboardDidHideNotification
object:nil];
}
- (void)keyboardDidShow:(NSNotification *)notification
{
CGFloat keyboardHeight = [CoreGraphicsHandler keyboardFramFromNotification:notification].size.height;
UIView *tableFooterView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth([UIScreen mainScreen].bounds), keyboardHeight)];
tableFooterView.backgroundColor = [UIColor whiteColor];
self.tableView.tableFooterView = tableFooterView;
}
- (void)keyboardDidHide:(NSNotification *)notification
{
UIView *tableFooterView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth([UIScreen mainScreen].bounds), 1)];
tableFooterView.backgroundColor = [UIColor whiteColor];
self.tableView.tableFooterView = tableFooterView;
}
答案 0 :(得分:1)
您需要让控制器成为文本字段的委托,然后发送tableview scrollToRowAtIndexPath:atScrollPosition: animated:
看到这个确切的欺骗:Making a UITableView scroll when text field is selected
答案 1 :(得分:0)
我有类似的问题,正如Idan Moshe在更新中所建议的,我解决了在我的tableView中插入footerView。 Swift 4中的解决方案:
func registerObservers(){
NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidShow), name: NSNotification.Name.UIKeyboardDidShow, object: nil);
NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidHide), name: NSNotification.Name.UIKeyboardDidHide, object: nil);
}
@objc func keyboardDidShow(_ notification: Notification) {
DispatchQueue.main.async {
if let keyboardFrame: NSValue = notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue {
let keyboardHeight = keyboardFrame.cgRectValue.height;
let tableFooterView = UIView.init(frame: CGRect.init(x: 0, y: 0, width: UIScreen.main.bounds.width, height: keyboardHeight))
self.tableView.tableFooterView = tableFooterView;
}
}
}
@objc func keyboardDidHide(_ notification: Notification) {
DispatchQueue.main.async {
let tableFooterView = UIView.init(frame: CGRect.init(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 1));
self.tableView.tableFooterView = tableFooterView;
}
}
func textFieldDidBeginEditing(_ textField: UITextField) {
let cell = self.selectedTExtField?.superview?.superview;
if let idxPath = self.tableView.indexPath(for: cell){
self.tableView.scrollToRow(at: idxPath, at: .top, animated: true);
}
else{
print("Error: index path not found");
}
}