1. amap_map
2. amap_map
3. MinMaxZoomPreference
4. defaultPreference constant

##### MinMaxZoomPreference class

1. Constructors
2. MinMaxZoomPreference
3. Properties
4. hashCode
5. maxZoom
6. minZoom
7. runtimeType
8. Methods
9. noSuchMethod
10. toJson
11. toString
12. Operators
13. operator ==
14. Constants
15. defaultPreference

# defaultPreference constant

MinMaxZoomPreference const defaultPreference

高德地图默认zoomLevel的范围.

## Implementation

    static const MinMaxZoomPreference defaultPreference =
        MinMaxZoomPreference(3, 20)