用作 UINavigationBar titleVIew 时未调用 UISearchBar 委托?
我有一个 UITableViewController,我已将其指定为 UISearchBarDelegate。到目前为止,我已经以编程方式将 UISearchBar 添加到表的 headerView 中,没有任何问题。
我开始耗尽屏幕空间,因此我决定取消正常的 UINavigationController 标题(文本),并添加以下代码,将我的 SearchBar 从表格移动到 UINavigationBar:
// (Called in viewDidLoad)
// Programmatically make UISearchBar
UISearchBar *tmpSearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0,0,320,45)];
tmpSearchBar.delegate = self;
tmpSearchBar.showsCancelButton = YES;
tmpSearchBar.autocorrectionType = UITextAutocorrectionTypeNo;
tmpSearchBar.autocapitalizationType = UITextAutocapitalizationTypeNone;
[self set_searchBar:tmpSearchBar];
[tmpSearchBar release];
self.navigationItem.titleView = [self _searchBar];
此代码按预期工作 - 我的 UINavigationBar 是现在是 UISearchBar。 但是,我的委托方法:
/** Only show the cancel button when the keyboard is displayed */
- (void) searchBarDidBeginEditing:(UISearchBar*) lclSearchBar
{
lclSearchBar.showsCancelButton = YES;
}
...不再被调用。我已经断点,并且我已经确认 UISearchBar 的委托确实是 self,即视图控制器。奇怪的是,这个委托方法仍然被调用得很好:
/** Run the search and resign the keyboard */
- (void) searchBarSearchButtonClicked:(UISearchBar *)lclSearchBar
{
_deepSearchRan = NO;
[self runSearchForString:[[self _searchBar] text] isSlowSearch:NO];
[lclSearchBar resignFirstResponder];
}
有什么想法为什么 UINavigationBar 吞噬了我的委托调用吗?我缺少什么?
I have a UITableViewController that I have specified as a UISearchBarDelegate. Up until now, I had programmatically added the UISearchBar to the headerView of the table, and there were no problems.
I began to run out of screen real estate, so I decided to kill my normal UINavigationController title (which was text), and added the following code, moving my SearchBar from the table to the UINavigationBar:
// (Called in viewDidLoad)
// Programmatically make UISearchBar
UISearchBar *tmpSearchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0,0,320,45)];
tmpSearchBar.delegate = self;
tmpSearchBar.showsCancelButton = YES;
tmpSearchBar.autocorrectionType = UITextAutocorrectionTypeNo;
tmpSearchBar.autocapitalizationType = UITextAutocapitalizationTypeNone;
[self set_searchBar:tmpSearchBar];
[tmpSearchBar release];
self.navigationItem.titleView = [self _searchBar];
This code works as expected - my UINavigationBar is now a UISearchBar.
However, my delegate method:
/** Only show the cancel button when the keyboard is displayed */
- (void) searchBarDidBeginEditing:(UISearchBar*) lclSearchBar
{
lclSearchBar.showsCancelButton = YES;
}
...is no longer being called. I've breakpointed, and I've confirmed that the UISearchBar's delegate is indeed self, the view controller. Oddly, this delegate method is still called just fine:
/** Run the search and resign the keyboard */
- (void) searchBarSearchButtonClicked:(UISearchBar *)lclSearchBar
{
_deepSearchRan = NO;
[self runSearchForString:[[self _searchBar] text] isSlowSearch:NO];
[lclSearchBar resignFirstResponder];
}
Any ideas why UINavigationBar is swallowing my delegate calls?? What am I missing?
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我认为你写了错误的方法签名。它应该是: –
searchBarTextDidBeginEditing:
这是用于文本编辑的所有 UISearchBarDelegate 方法。
UISearchBarDelegate
I think you write the wrong method signature. It should be : –
searchBarTextDidBeginEditing:
Here is all the UISearchBarDelegate methods for text editing.
UISearchBarDelegate