Android - Google Maps - How do I change the image of a marker and then back to the original image?

Question

I am having trouble trying to figure out how to change the drawable of a marker for when the user taps on it and then back to the original drawable when the user leaves his finger out of the screen.

I already know how to change the marker's drawable by using this:

marker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.my_drawable));

The problem is, where do I put that code exactly? If I put it inside the onMarkerClick callback then it's too late because that callback is fired after the user leaves his finger out of the screen (just like a normal click event in any view is fired only when the finger is let off the screen).

I've tried to set the drawable to a selector (as bellow) but it does not work (the code throws an exception):

final BitmapDescriptor bitmapDescriptor = BitmapDescriptorFactory.fromResource(R.drawable.my_selector);

final MarkerOptions markerOptions = new MarkerOptions().icon(bitmapDescriptor)
                                                       .anchor(0.5f, 1.0f)
                                                       .position(latLon);

Here is my_selector.xml (used above):

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/drawable_A" android:state_focused="true" android:state_pressed="false"/>
<item android:drawable="@drawable/drawable_B" android:state_focused="true" android:state_pressed="true"/>
<item android:drawable="@drawable/drawable_B" android:state_focused="false" android:state_pressed="true"/>
<item android:drawable="@android:color/white" />

@CodeHunter Nope, I was finally able to convince the design team to change their design slightly. — Bitcoin Cash - ADA enthusiast, May 02 '17 at 12:12
I see. Well, when I click the marker I am able to place a pressed icon but when I click another marker can't back the previous one default. Thank you for your quick response. — Code Hunter, May 02 '17 at 12:22

score 0 · Answer 1 · edited May 23 '17 at 12:10

0

I suggest you to try OnTouchListener with maps.

On MotionEvent.ACTION_DOWN you can set one background and on MotionEvent.ACTION_UP you can set another background.

Please refer the link here and here.

edited May 23 '17 at 12:10

Community

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answered Jul 28 '15 at 06:39

anu_r

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Thanks for replying, but I can't apply OnTouchListener on the Marker or on the Map. They are not common views. – Bitcoin Cash - ADA enthusiast Jul 28 '15 at 21:24

Android - Google Maps - How do I change the image of a marker and then back to the original image?

1 Answers1