Removing custom pins with Map API

cvp

@RocketBlaster05 if I correctly understand, try this to add or remove a pin by a long press

def long_press_action(sender):
	# Add a pin when the MapView recognizes a long-press
	c = sender.point_to_coordinate(sender.long_press_location)
	if len(sender.mk_map_view.annotations()) == 1:
		sender.remove_all_pins()
	else:
		sender.add_pin(c[0], c[1], 'Dropped Pin', str(c), select=True)
	sender.set_center_coordinate(c[0], c[1], animated=True)

RocketBlaster05

Once again you are correct! Thanks once again!

RocketBlaster05

@cvp Now that I have this working, do you know a way I could make it remove only one pin? Sorry I'm like brand new to objc. Thanks!

cvp

@RocketBlaster05 said:

remove only one pin

Sorry but I don't understand, there is only one pin...

Do you want to have more than one pin and to be able to remove only one?

RocketBlaster05

@cvp yes.

cvp

But how do you want to specify which you want to remove?

RocketBlaster05

@cvp with my code, I have 11 pins that spawn off startup. I wish to make it so that you can add a dropped pin, then if you do it again it removes the old one. Sorry on this 3 minute timer.

cvp

@RocketBlaster05 sorry, but I don't understand.
At each long press, you want to add a new pin
Thus, how to specify that you want to remove a pin?

cvp

@RocketBlaster05 with this, no remove

def long_press_action(sender):
	# Add a pin when the MapView recognizes a long-press
	c = sender.point_to_coordinate(sender.long_press_location)
	# this of only to special process asked in forum
	# https://forum.omz-software.com/topic/7077/removing-custom-pins-with-map-api
	if 1==0:#len(sender.mk_map_view.annotations()) == 1:
		sender.remove_all_pins()
	else:
		sender.add_pin(c[0], c[1], 'Dropped Pin', str(c), select=True)
	sender.set_center_coordinate(c[0], c[1], animated=True)

RocketBlaster05

@cvp Yes I want to add and remove "Dropped Pin"s only

cvp

@RocketBlaster05 thus a long press adds an additional pin.
Which gesture should remove the last one?

RocketBlaster05

@cvp whenever a new pin is added, the only pins that should be removed are any pins named "Dropped Pin." It gets removed once a new pin is added.

cvp

@RocketBlaster05 I think that I'm not very skilled in English but I don't understnd.
In this script, all pins are named "dropped", except the first one.

RocketBlaster05

@cvp yes what you wrote below is correct

cvp

I think that I begin to understand.
Your code has placed 11 pins and you want that a long press only deletes the pin named dropped.
Is that correct?

RocketBlaster05

@cvp yes that is correct

cvp

@RocketBlaster05 sorry for the misunderstanding

def long_press_action(sender):
	# Add a pin when the MapView recognizes a long-press
	c = sender.point_to_coordinate(sender.long_press_location)
	# this of only to special process asked in forum
	# https://forum.omz-software.com/topic/7077/removing-custom-pins-with-map-api
	for annotation in sender.mk_map_view.annotations():
		if str(annotation.title()) == 'Dropped Pin':
			sender.mk_map_view.removeAnnotation_(annotation)
	else:
		sender.add_pin(c[0], c[1], 'Dropped Pin', str(c), select=True)
	sender.set_center_coordinate(c[0], c[1], animated=True)

RocketBlaster05

@cvp works like a charm!

cvp

@RocketBlaster05 ouf. Sorry to have been so slow to understand

RocketBlaster05

@cvp school's been rough lately lol. Teacher is asking I make more modifications to the map we were talking about so that I can collect some data... I have a simple ui.load_view() I plan to make later which will ask the user if they want to mark their current location on the map. However I would need a button to be pressed for the user to get the view to work. Also, the user would need to be able to do so as many times as they like, so that multiple marks can appear on the map. The positions of the markers would need to be saved so that the next time the map is activated, the markers will reappear. I understand this is likely a fair amount of code, but any help would be greatly appreciated. I will not be able to test the code for a few hours because my iPad is at home and I am at school. If you could suggest any ideas for me to test later I would be very thankful.