我有一个UIViewController，其中包含带有自定义单元格的UITableView，该单元格内是UILabels，几个不可编辑的UITextView和一个可编辑的UITextView。现在，当我点击靠近表底部或底部的UITextView之一时，UITextView被键盘覆盖。我试过http://cocoawithlove.com/2008/10/sliding-uitextfields-around-to-avoid.html，它非常适合textfield / textview，但不适用于带有自定义单元格的表。任何帮助或建议如何解决？
最佳答案
I fixed the issue. Please see my solution below:
1. First declare a global varibale called "activeFileld"
@property(nonatomic,strong)id activeFiled;
2. Create a method called "registerForKeyboardNotifications"
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification object:nil]; //Posted immediately prior to the display of the keyboard
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification object:nil]; //Posted immediately prior to the dismissal of the keyboard.
}
3. Called the above method in viewWillAppear:
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
//Register kryboard Notification
[self registerForKeyboardNotifications];
}
4. Call the Delegate method for UitextFieldd Or UitextView
- (void)textFieldDidBeginEditing:(UITextField *)sender {
self.activeField = sender;
}
- (void)textFieldDidEndEditing:(UITextField *)sender{
self.activeField = nil;
}
- (void)textViewDidBeginEditing:(UITextView *)textView
{
// save the text view that is being edited
_notes = textView.text;
}
- (void)textViewDidEndEditing:(UITextView *)textView
{
// release the selected text view as we don't need it anymore
_activeField = nil;
}
5.
- (void)keyboardWillShow:(NSNotification *)notification
{
if([_activeField isKindOfClass:[UITextField class]]) {
NSDictionary* info = [notification userInfo];
NSLog(@"Dictionary %@",info);
CGRect kbRect = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
kbRect = [self.view convertRect:kbRect fromView:nil];
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbRect.size.height, 0.0);
self.tableView.contentInset = contentInsets;
self.tableView.scrollIndicatorInsets = contentInsets;
CGRect aRect = self.view.frame;
aRect.size.height -= kbRect.size.height;
UITextField *textField = (UITextField*)_activeField;
if (!CGRectContainsPoint(aRect, textField.frame.origin) ) {
[self.tableView scrollRectToVisible:textField.frame animated:YES];
}
}else if([_activeField isKindOfClass:[UITextView class]]) {
NSDictionary* info = [notification userInfo];
NSLog(@"Dictionary %@",info);
CGRect kbRect = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
kbRect = [self.view convertRect:kbRect fromView:nil];
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbRect.size.height, 0.0);
self.tableView.contentInset = contentInsets;
self.tableView.scrollIndicatorInsets = contentInsets;
CGRect aRect = self.view.frame;
aRect.size.height += kbRect.size.height;
UITextView *activeTextView = (UITextView*)_activeField;
if (!CGRectContainsPoint(aRect, textField.superview.superview.frame.origin) ) {
[self.tableView scrollRectToVisible:activeTextView.superview.superview.frame animated:YES];
}
}
}
// Called when the UIKeyboardWillHideNotification is received
- (void)keyboardWillHide:(NSNotification *)aNotification
{
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
self.tableView.contentInset = contentInsets;
self.tableView.scrollIndicatorInsets = contentInsets;
}