Книга: Beginning Android
Center
Center
Typically, you will need to control what the map is showing, beyond the zoom level, such as the user’s current location, or a location saved with some data in your activity. To change the map’s position, call setCenter() on the MapController.
This takes a GeoPoint as a parameter. A GeoPoint represents a location, via latitude and longitude. The catch is that the GeoPoint stores latitude and longitude as integers representing the actual latitude and longitude multiplied by 1E6. This saves a bit of memory versus storing a float or double, and it probably speeds up some internal calculations Android needs to do to convert the GeoPoint into a map position. However, it does mean you have to remember to multiply the “real world” latitude and longitude by 1E6.
Оглавление книги
- Chapter 5 Installing and Configuring VirtualCenter 2.0
- Windows Media Center
- Creating and Managing a VirtualCenter Inventory
- Подготовка Windows Media Center к работе
- Using VirtualCenter Topology Maps
- VirtualCenter Best Practices
- Installing the VirtualCenter Back-end Database
- ESX 3.5 and VirtualCenter 2.5 Licensing Strategies
- Chapter 5: Installing and Configuring VirtualCenter 2.0
- Installing VirtualCenter 2.5
- Introducing VirtualCenter 2.5
- VMware VirtualCenter