How do you hide a UIPickerview on button tap programmatically? - ios

Question

i have a uipickerivew in uitablview prototype cell, i want to hide only when done button pressed. please help me.
here is my code for how i create uipickeriview and done button.
self.pickerView = [[UIPickerView alloc] initWithFrame:(CGRect){{0, 0}, 330, 200}];
self.pickerView.delegate = self;
self.pickerView.dataSource = self;
self.pickerView.center = (CGPoint){160, 640};
self.pickerView.hidden = YES;
self.pickerView.backgroundColor =[UIColor whiteColor];
[self.view addSubview:self.pickerView];
UIToolbar *toolBar= [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
[toolBar setBarStyle:UIBarStyleBlackOpaque];
UIBarButtonItem *flex = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
UIBarButtonItem *barButtonDone = [[UIBarButtonItem alloc] initWithTitle:#"Done"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(pickerDoneClicked)];
toolBar.items = #[barButtonDone];
toolBar.items = #[flex, barButtonDone];
barButtonDone.tintColor = [UIColor lightGrayColor];
[_pickerView addSubview:toolBar];
-(void) pickerDoneClicked {
[_pickerView resignFirstResponder];
}

Answer 1

It is better to rather than create and remove each time, create your pickerview once in view did load and then in your cell do:
[_pickerView becomeFirstResponder];
(to show it like a keyboard animated in).
You can then create a pickerDoneClicked method (that is called when Done is tapped) to call resignFirstResponder on your pickerview (to animate it away):
-(void) pickerDoneClicked {
[_pickerView resignFirstResponder];
}

Answer 2

just add below IBAction method and call removefromsuperview method,
-(void)pickerDoneClicked{
[self.pickerView removeFromSuperview];}
As you are already adding again everytime, you can directly remove it from superview and adding again.

Answer 3

After selecting a value using picker view you can implement this method.Add a toolbar with done button and give action to done button
- (IBAction)doneClicked:(id)sender {
[yourTextfield resignFirstResponder];
}
this method is used in the case , when selecting a value to the textfield with picker as input.

Answer 4

- (void)viewDidLoad {
self.pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 0, 330, 200)];
self.pickerView.delegate = self;
self.pickerView.dataSource = self;
self.pickerView.backgroundColor =[UIColor whiteColor];
[self.view addSubview:self.pickerView];
UIToolbar *toolBar= [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
[toolBar setBarStyle:UIBarStyleBlackOpaque];
UIBarButtonItem *barButtonDone = [[UIBarButtonItem alloc] initWithTitle:#"Done"
style: UIBarButtonItemStylePlain
target:self
action:#selector(pickerDoneClicked:)];
UIBarButtonItem *flex = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
toolBar.items = #[flex, barButtonDone];
barButtonDone.tintColor = [UIColor lightGrayColor];
[self.view addSubview:toolBar];
}
-(IBAction)pickerDoneClicked:(id)sender
{
pickerView.hidden = YES;
}

Answer 5

Inside the didiSelectRow method add this line of code:
self.view.endEditing(true)