Add getAnnotationsInBounds in NativeMapView.java

[erf]

I'm looking at implementing annotation selection in Android but i need the getAnnotationsInBounds method.

[ljbade]

@incanus How does this relate to your long press pin drop stuff?

[incanus]

Not related.

[incanus]

Eventually it will relate to selection of dropped pins, but that's cart before horse right now.

[ljbade]

@incanus some feedback on how to design this:

First you should implement #1998
This will require you to keep a shadow of the Annotation objects in a local LinkedList as a private member of MapView. Basically each time you handle add* or remove* you update the Java list as well as call the JNI function.

Then the getAnnotations will simply return this as a List.

You can then change the JNI nativeGetAnnotationsInBounds to return a long[] of annotation IDs. In the Java implementation of getAnnotationsInBounds you then use this array of IDs to build an ArrayList of Annotation objects as a List.

[incanus]

I think I follow, but does this account for needing to query an arbitrary bounding box? That's why I want to pass down to the C++ routine.

[ljbade]

@incanus Oh yes you still pass down to the C++ routine the bounding box. But you return the list of annotation ID numbers, which is then used to find the actual Annotation object created with that ID.

[incanus]

Ah I gotcha — yes, thanks for the help outlining the Java side of the API. Once I get there! 😄

[ljbade]

@incanus After #2094 and #2088 all that's left now is this. I might be able to pick this up tomorrow.

[incanus]

👉 #2201

[erf]

nice! 👍

[bleege]

Fixed by #2201