fix rare android crashes when map size is 0

[mattshen]

This is to fix #245

This cannot be easily reproduced, and only happens in our released app from time to time (not often).

The safest way is to check width and height before calling newLatLngBounds(boundsToMove, width, height, 0)

[jeveloper]

I too have seen this in production, i think it might be related to google play service sdk bug , but thanks for doing this . Hope AirBNB will finally start pulling in code and making builds

[sytolk]

Put Map in https://github.com/jaysoo/react-native-parallax-scroll-view and issue #842 will be not so rare :)

[samthui]

Hi, this issue re-appears after upgrading to RN 0.43.3.

Previously I used RN 0.42.3 & react-native-maps 0.13.1. My map is included in a View with flex=1.
Before upgrading to RN 0.43.3, this code worked fine:

<MapView
        provider={provider}
        ref="map"
         rotateEnabled={false}
         maxZoomLevel={18}
        style={{ flex: 1, width: "100%" }}
         initialRegion={this.state._region}
         onRegionChange={region => this.onRegionChange(region)}
/>

But after upgrading, same error occurs, only changing style={{ flex: 1, width: "100%" }} to style={{ width: some-hard-code-value, height: "100%" }} can remove the error, but that's not what I want.

[kozillla]

crash in RN 0.48