[英]j2me :question about Landmark class
i am trying to invoke blackberry map and label a location by address. 我正在尝试调用黑莓地图并通过地址标记位置。 i tried the sample code as following
我尝试了以下示例代码
public class invokeMaps
{
public invokeMaps ()
{
Landmark[] landMarks = new Landmark[3];
AddressInfo addressInfo = new AddressInfo();
addressInfo.setField(AddressInfo.STREET, "455 Phillip St");
addressInfo.setField(AddressInfo.CITY, "Waterloo");
addressInfo.setField(AddressInfo.STATE, "Ontario");
landMarks[0] = new Landmark("AAA", "Description 1", null, addressInfo);
QualifiedCoordinates coordinates =
new QualifiedCoordinates(45.4, -75.1, 0, 0, 0);
landMarks[1] = new Landmark("BBB", "Description 2", coordinates, null);
coordinates = new QualifiedCoordinates(45.3,-75.3,0,0,0);
landMarks[2] = new Landmark("CCC", "Description 3", coordinates, null);
MapsArguments ma = new MapsArguments(landMarks);
Invoke.invokeApplication(Invoke.APP_TYPE_MAPS, ma);
}
}
it only labels BBB and CCC, AAA is missing. 它仅标记BBB和CCC,缺少AAA。 i think that is because of AAA missing coordinates.
我认为这是因为AAA缺少坐标。 my question is how can i retrive the coordinates for a location if i only have the address.
我的问题是,如果我只有地址,该如何获取位置的坐标。
I bet you have to call a remote service which can translate addresses into collections of coordinates. 我敢打赌,您必须致电远程服务,该服务可以将地址转换为坐标集合。 The google places API looks promising.
Google Places API看起来很有希望。
我发现MapsArguments(Contact contact,int addressIndex)不需要坐标就可以工作。
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