iOS - Dismiss UIDatePicker presented as inputView

问题:

I have a text field in my UI that when it's selected presents a UIDatePicker instead of the default keyboard, how could I set up a button as to dismiss the picker when the user is done?

回答1:

What I do is have my inputView as a custom view which contains a UIDatePicker and a toolbar above it with a 'Done' button wired up to a method that calls a delegate method to tell the object that owns the UITextField to dismiss the "keyboard" by calling resignFirstResponder.

回答2:

Create a UIView (namely customDatePickerView) and in that view ,create datepicker and a done button and a cancel button in the xib. In the textfield delegate:

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    if (textField == textfieldName) {
        [textfieldName resignFirstResponder];
         //show the view
         self.customDatePickerView.hidden = NO;

    }

}//dismisses keyboard

Function on Date Picker Value Changed

- (IBAction)onDatePickerClick:(id)sender {

    NSDateFormatter  *dateFormatter = [[NSDateFormatter alloc]init];
    [dateFormatter setDateFormat:@"MM/dd/YYYY"];
    NSDate *selectedDate = [self.wellRecordDatePicker date];
    NSString *recordDate = [dateFormatter stringFromDate:selectedDate];
    self.yourTextfieldName.text = recordDate;


}

- (IBAction)onDoneBtnClick:(id)sender
{
       self.customDatePickerView.hidden = YES;
}
- (IBAction)onCancelBtnClick:(id)sender
{
       self.customDatePickerView.hidden = YES;
}

Hope this will help you.

回答3:

I've done a similar thing where I've created a view with a button and the UIDatePicker, then presented that view instead of the UIDatePicker alone. Then the button is just connected to an IBAction that moves the view out.

This way, the button moves in with the UIDatePicker view and they look "connected" to the user. You can even define this UIView in your nib and use addSubview: at runtime.

回答4:

You can solve this by adding this

[self.view endEditing:YES];

Add this where you want to dismiss date picker like i have added this on tap gesture
On viewDidLoad added a Tapgesture

 UITapGestureRecognizer *gesRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)]; // Declare the Gesture.
    gesRecognizer.delegate = self;
    [self.view addGestureRecognizer:gesRecognizer];

After adding this on viewdidLoad Add this method to detect gesture recognizer

- (void)handleTap:(UITapGestureRecognizer *)gestureRecognizer{
    NSLog(@"Tapped");
    [self.view endEditing:YES];
}