我需要将LatLng类的实例传递给另一个intent.我该怎么办？
这是代码.
这是代码.
LatLng fromPosition = new LatLng(23.4555453556,11.145315551);
LatLng toPosition = new LatLng(12.1115145311,99.333455333);
Intent i= new Intent(Maps.this,Routes.class);
startActivity(i);
请帮帮我.
路线类：
public class Routes extends FragmentActivity {
GoogleMap mMap;
GMapV2Direction md;
private String provider;
double lati;
double longi;
String name;
Location location;
Document doc;
PolylineOptions rectLine;
Bundle bundle = getIntent().getParcelableExtra("bundle");
LatLng fromPosition = bundle.getParcelable("from_position");
LatLng toPosition = bundle.getParcelable("to_position");
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.maps2);
md = new GMapV2Direction();
mMap = ((SupportMapFragment)getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
LatLng coordinates = fromPosition;
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(coordinates,16));
mMap.addMarker(new MarkerOptions().position(fromPosition).title("Start"));
mMap.addMarker(new MarkerOptions().position(toPosition).title("End"));
new ParseXML().execute();
}
private class ParseXML extends AsyncTask<Void,Void,Document> {
@Override
protected Document doInBackground(Void... params) {
doc = md.getDocument(fromPosition,toPosition,GMapV2Direction.MODE_DRIVING);
ArrayList<LatLng> directionPoint = md.getDirection(doc);
rectLine = new PolylineOptions().width(3).color(Color.RED);
for (int i = 0; i < directionPoint.size(); i++) {
rectLine.add(directionPoint.get(i));
}
return null;
}
@Override
protected void onPostExecute(Document result) {
// TODO Auto-generated method stub
mMap.addPolyline(rectLine);
}
}
}
这是我的路线课.我不知道这个问题.帮帮我吧它似乎发送捆绑很好,但收到它时出错.
解决方法
使用putParcelable方法将LatLng对象附加到Bundle：
Bundle args = new Bundle();
args.putParcelable("from_position",fromPosition);
args.putParcelable("to_position",toPosition);
现在将它附加到您的意图：
i.putExtra("bundle",args);
要在新活动中获取它：
Bundle bundle = getIntent().getParcelableExtra("bundle");
LatLng fromPosition = bundle.getParcelable("from_position");
LatLng toPosition = bundle.getParcelable("to_position");
