问题
I've read so many solution on how can i focus a searchbar to make keyboard appear when i open my search view, and all of that are like this
[searchBar becomeFirstResponder];
mine is
[self.searchDisplayController.searchBar becomeFirstResponder];
but I tried both.
Now, I tried this, and I also added a
[self.searchDisplayController setActive:YES];
because I'm using a SearchDisplayController, but so far the best result i can have is to have the cursor on the searchbar, the uitableview with an overlay on it, but still no keyboard.
If I run the simulator I can type on the searchbar with my computer's keyboard, but on an iPhone I can't do anything.
If you want to give a look to my code: http://nopaste.info/39fcda4771.html the focus should be executed in viewDidLoad method
Thanks again.
回答1:
I was showing searchbar on textFieldDidBeginEditing:(UITextField *)textField delegate method.
Keyboard was not showing. So for that first resign textField as firstResponder. i.e.
[textField resignFirstResponder];
Then call method with delay
[self performSelector:@selector(callSearchBar) withObject:NULL afterDelay:0.2];
Where
-(void)callSearchBar{
[self.searchDisplayController setActive: YES animated: YES];
self.searchDisplayController.searchBar.hidden = NO;
[self.searchDisplayController.searchBar becomeFirstResponder];
}
It works
回答2:
Use the UISearchBarDelegate and declare the searchBar in the header file like this ...
@interface mySearchScreen : UIViewController <UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate> {
UITableView *myTableView;
NSMutableArray *tableData;
UISearchBar *sBar;//search bar
and declare your search bar in loadView
- (void)loadView {
[super loadView];
sBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0,0,320,30)];
sBar.delegate = self;
[self.view addSubview:sBar];
myTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 31, 300, 400)];
myTableView.delegate = self;
myTableView.dataSource = self;
[self.view addSubview:myTableView];
tableData = [[NSMutableArray alloc]init];
}
and then use becomeFirstResponder on your search bar in viewDidAppear
- (void)viewDidAppear:(BOOL)animated {
//ensure the keyboard comes up from the start
[sBar becomeFirstResponder];
[super viewDidAppear:animated];
}
回答3:
The sequence matter
[self.searchDisplayController setActive:YES animated:YES];
[self.searchDisplayController.searchBar becomeFirstResponder];
If no luck then check if delegate of the search display controller is linked. Also worth checking the tint colour of the search bar.
回答4:
On the simulator, make sure that you click on Toggle Software Keyboard to use the keyboard of the simulator as you can see in the image.
来源：https://stackoverflow.com/questions/5474529/focus-on-the-uisearchbar-but-the-keyboard-not-appear