Hiding/ Showing UIPickerView

Question

I Have an a touchesEnded event that checks for when a UITextField is pressed. What I would like it to do is is hide/show a UIPickerView. How can this be done?

Answer 1

Below is the sample code to hide and show of UIPickerView with animation:-

//For Displaying

-(void)showPickerView{
    self.pickerSheet = [UIAlertController alertControllerWithTitle:@"Select font" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
    self.pickerView = [[UIPickerView alloc]initWithFrame:CGRectZero];
    self.pickerView.dataSource = self;
    self.pickerView.delegate = self;
    self.pickerView.showsSelectionIndicator = YES;
    [self.pickerView selectRow:1 inComponent:0 animated:YES];
    [self.pickerSheet.view addSubview:self.pickerView];
    self.pickerView.translatesAutoresizingMaskIntoConstraints = NO;
    UIView *view = self.pickerView;
    [self.pickerSheet.view addConstraints:[NSLayoutConstraint
                               constraintsWithVisualFormat:@"V:|[view]|"
                               options:0l
                               metrics:nil
                               views:NSDictionaryOfVariableBindings(view)]];

    [self.pickerSheet.view addConstraints:[NSLayoutConstraint
                               constraintsWithVisualFormat:@"H:|[view]|"
                               options:0l
                               metrics:nil
                               views:NSDictionaryOfVariableBindings(view)]];
    [self presentViewController:self.pickerSheet animated:YES completion:^{
    }];

}

//For hiding

-(void)hidePickerView{
    [self.pickerSheet dismissViewControllerAnimated:YES completion:^{
    }];
}