这在 some.h 文件中
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
{
IBOutlet UIDatePicker *picker1;
IBOutlet UITextField *txtFld;
}
@property (nonatomic, retain) UIToolbar *keyboardToolbar;
@end
在一些.m 文件中
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
picker1=[[UIDatePicker alloc] initWithFrame:CGRectMake(0, 0, 320, 300)];//frames are just for demo
[txtFld setInputView:picker1];
}
- (void)keyboardWillShow:(NSNotification *)notification
{
if(keyboardToolbar == nil) {
keyboardToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 410, 320, 44)] ;
[keyboardToolbar setBarStyle:UIBarStyleBlackTranslucent];
[keyboardToolbar sizeToFit];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.4];
UIBarButtonItem *flexButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
UIBarButtonItem *doneButton1 =[[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(resignKeyboard)];
NSArray *itemsArray = [NSArray arrayWithObjects:flexButton,doneButton1, nil];
[keyboardToolbar setItems:itemsArray];
[txtFld setInputAccessoryView:keyboardToolbar];
[self.view addSubview:keyboardToolbar];
[UIView commitAnimations];
}
}
-(void)resignKeyboard {
[keyboardToolbar removeFromSuperview];
[txtFld resignFirstResponder];
///do nescessary date calculation here
}