Fix for disappearing places picker marker

[langsmith]

@tobrun @LukasPaczos

Resolves #529 by fixing the floating marker in the place picker functionality of the places plugin. In my opinion, this bug renders the picker essentially unusable.

If you share my slight concern thatmapView.getY() / 2 isn't the most performant fix, given that it happens every time that onCameraIdle() fires, I'm happy to hear other ideas for fixing.

[LukasPaczos]

Looks good to me, thanks @langsmith 🚀

[LukasPaczos]

Actually, as the markerImage has view constraints to its parent, just markerImage.animate().translationY(0) should be enough here.

[langsmith]

Yea, that works. Fixed

[langsmith]

Any chance we can do a new release of the Places Plugin in the next couple of weeks @LukasPaczos @zugaldia ? A release hasn't gone out since this pr was merged into master, so in my opinion, the place picker functionality continues to be broken/useless for devs who are using the latest stable version. They'll still see #529 in their projects. Or are we fine with advising folks to use 0.6.0-SNAPSHOT for now?

cc @riastrad in case you get any future inbound questions about this.

[zugaldia]

I agree with @langsmith that the plugin is due for a new release.

@LukasPaczos @osana can you tandem to release a new version of the places plugin? I'll defer to you on timing, the upcoming frappe release is a good opportunity to refresh the plugins but I can also see value publishing it earlier to include the fix mentioned above.

[bradjonesca]

@zugaldia could you explain or direct me to any information about the "frappe" release? I had not heard of it before now, thank-you

[zugaldia]

@bradjonesca my bad, I should have provided a better explanation :) frappe is the codename for the upcoming Maps SDK release, which on Android is 6.5.0. We just released 6.5.0-alpha.2 and we expect a final release in the next few weeks (we name our Maps SDK release after drinks, you can see previous names in the release-* branch names in https://github.com/mapbox/mapbox-gl-native).