【发布时间】:2014-06-15 14:53:08
【问题描述】:
我正在开发一个包含UITextField 和UITextView 的静态UITableView 应用程序。我面临两个问题
- 当我选择
UITextField时,它移动正确,但不适用于UITextView。 - 当键盘消失时,
UITableView未正确显示。
我想要的只是在键盘出现和消失时相应地调整UITextField 和UITextView。这是我的代码。
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
- (void)keyboardWillShow:(NSNotification *)notification {
//get the end position keyboard frame
NSDictionary *keyInfo = [notification userInfo];
CGRect keyboardFrame = [[keyInfo objectForKey:@"UIKeyboardFrameEndUserInfoKey"] CGRectValue];
//convert it to the same view coords as the tableView it might be occluding
keyboardFrame = [self.tableView convertRect:keyboardFrame fromView:nil];
//calculate if the rects intersect
CGRect intersect = CGRectIntersection(keyboardFrame, self.tableView.bounds);
if (!CGRectIsNull(intersect)) {
//yes they do - adjust the insets on tableview to handle it
//first get the duration of the keyboard appearance animation
NSTimeInterval duration = [[keyInfo objectForKey:@"UIKeyboardAnimationDurationUserInfoKey"] doubleValue];
//change the table insets to match - animated to the same duration of the keyboard appearance
[UIView animateWithDuration:duration animations:^{
self.tableView.contentInset = UIEdgeInsetsMake(0, 0, intersect.size.height, 0);
self.tableView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 0, intersect.size.height, 0);
}];
}
}
- (void) keyboardWillHide: (NSNotification *) notification{
NSDictionary *keyInfo = [notification userInfo];
NSTimeInterval duration = [[keyInfo objectForKey:@"UIKeyboardAnimationDurationUserInfoKey"] doubleValue];
//clear the table insets - animated to the same duration of the keyboard disappearance
[UIView animateWithDuration:duration animations:^{
self.tableView.contentInset = UIEdgeInsetsZero;
self.tableView.scrollIndicatorInsets = UIEdgeInsetsZero;
}];
}
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标签: iphone objective-c uitableview ios7