iphone UISearchBar Done button always enabled
I have a UIViewController with a UISearchBar. I have replaced the Search Button by a Done button.
However, when one taps on the searchbar, the Done button is initially disabled. This occurs until one enters any character.
What I want to do is to have this Done button always enabled, such that if i tap on it i can inmediately dismiss the keyboard.
Any help? it would be highly appreciated.
I have on my UIViewController
-(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar
{
return YES;
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[searchBar resignFirstResponder];
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if (searchBar.text.length == 0)
{
//[self fixOrientation];
[searchBar resignFirstResponder];
}
else
{
NSLog(@"typed");
}
}
-(void)searchBarTextDidBeginEditing:(UISearchBar *)theSearchBar
{
NSLog(@"began"); // this executes as soon as i tap on the searchbar, so I'm guessing this is the place to put whatever solution is available
}
Nowadays UISearchBar conforms to UITextInputTraits . You can simply set:
searchBar.enablesReturnKeyAutomatically = NO;
WARNING: While this compiles for iOS 7.0, it will crash at runtime. It only works for >=7.1.
The docs are not clear on this one, as only since 7.1, the UISearchBar implements the UITextInputTraits protocol, but it is not noted since which iOS version the protocol is adopted.
You can get around this by looping around the subviews in the UISearchBar until you find the text field. Its then just a matter of setting "enablesReturnKeyAutomatically" to NO. Incidentally the following code also is useful for setting the keyboard type.
// loop around subviews of UISearchBar
for (UIView *searchBarSubview in [searchBar subviews]) {
if ([searchBarSubview conformsToProtocol:@protocol(UITextInputTraits)]) {
@try {
// set style of keyboard
[(UITextField *)searchBarSubview setKeyboardAppearance:UIKeyboardAppearanceAlert];
// always force return key to be enabled
[(UITextField *)searchBarSubview setEnablesReturnKeyAutomatically:NO];
}
@catch (NSException * e) {
// ignore exception
}
}
}
接受的答案似乎不再适用，所以我做了我自己的类似的工作：
@implementation UISearchBar (enabler)
- (void) alwaysEnableSearch {
// loop around subviews of UISearchBar
NSMutableSet *viewsToCheck = [NSMutableSet setWithArray:[self subviews]];
while ([viewsToCheck count] > 0) {
UIView *searchBarSubview = [viewsToCheck anyObject];
[viewsToCheck addObjectsFromArray:searchBarSubview.subviews];
[viewsToCheck removeObject:searchBarSubview];
if ([searchBarSubview conformsToProtocol:@protocol(UITextInputTraits)]) {
@try {
// always force return key to be enabled
[(UITextField *)searchBarSubview setEnablesReturnKeyAutomatically:NO];
}
@catch (NSException * e) {
// ignore exception
}
}
}
}
上一篇: UISearchBar取消按钮问题