BMFAndroidVersion constructor Null safety

1. flutter_baidu_mapapi_map
2. flutter_baidu_mapapi_map
3. BMFAndroidVersion
4. BMFAndroidVersion constructor

BMFAndroidVersion class

1. Constructors
2. BMFAndroidVersion
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. getAndroidVersion
13. mIsAndroidVersion
14. setAndroidVersion
15. Static methods
16. initAndroidVersion