Android 是否可以在对话框片段中显示地图视图?
我有一个对话框片段,我想在其中显示我的地图,并标记我随身携带的lat和log。 但是我的Android 是否可以在对话框片段中显示地图视图?,android,google-maps,android-dialogfragment,Android,Google Maps,Android Dialogfragment,我有一个对话框片段,我想在其中显示我的地图,并标记我随身携带的lat和log。 但是我的getMap()为空。这就是我所做的 public class EventDetailsDialogFragment extends DialogFragment{ TextView title, desc, sdate, edate, room, loctn; FeedObjModel selectedFeedObject; Date netDate; SimpleDateF
getMap()
为空。这就是我所做的
public class EventDetailsDialogFragment extends DialogFragment{
TextView title, desc, sdate, edate, room, loctn;
FeedObjModel selectedFeedObject;
Date netDate;
SimpleDateFormat sdf;
GoogleMap theMap;
MarkerOptions markerOptions;
FragmentActivity myContext;
@Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view = inflater.inflate(R.layout.event_details_dialog_layout, container);
title = (TextView) view.findViewById(R.id.title_event_details_TV);
desc = (TextView) view.findViewById(R.id.description_event_details_TV);
sdate = (TextView) view.findViewById(R.id.start_date_event_details_TV);
edate = (TextView) view.findViewById(R.id.end_date_event_details_TV);
loctn = (TextView) view.findViewById(R.id.locEdTV);
long timestamp1 = Long.parseLong(selectedFeedObject.eventstartDate);
long timestamp2 = Long.parseLong(selectedFeedObject.eventendDate);
try{
sdf = new SimpleDateFormat("MMM dd, yyyy");
netDate = (new Date(timestamp1*1000));
sdate.setText(sdf.format(netDate));
netDate = (new Date(timestamp2*1000));
edate.setText(sdf.format(netDate));
} catch(Exception ex){
}
getDialog().setTitle(""+selectedFeedObject.subject);
title.setText(selectedFeedObject.subject);
desc.setText(selectedFeedObject.eventDescription);
loctn.setText(selectedFeedObject.eventLocation);
/* theMap = ((SupportMapFragment) getActivity().getSupportFragmentManager()
.findFragmentById(R.id.mapED))
.getMap();*/
SupportMapFragment fragment = new SupportMapFragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.add(R.id.mapED, fragment).commit();
theMap = fragment.getMap();
Log.v("theMap1", ""+theMap);
Double lng = Double.parseDouble(selectedFeedObject.eventlongitude);
Double lat = Double.parseDouble(selectedFeedObject.eventlatitude);
LatLng latLng = new LatLng(lng, lat);
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title(selectedFeedObject.eventLocation);
Log.v("markerOptions", ""+markerOptions);
theMap.addMarker(markerOptions);
theMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
CameraUpdate center = CameraUpdateFactory
.newLatLng(new LatLng(lat, lng));
CameraUpdate zoom = CameraUpdateFactory.zoomTo(15);
theMap.moveCamera(center);
theMap.animateCamera(zoom);
return view;
}
public void setEventDetails(FeedObjModel _selectedFeedObject) {
// TODO Auto-generated method stub
selectedFeedObject = _selectedFeedObject;
}
}
我将“themap”设置为空
.xml
我想这是因为即使map片段的
事务已提交,它也不会立即执行。您必须使用:FragmentManager.executePendingTransactions()
这样:
SupportMapFragment fragment = new SupportMapFragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.add(R.id.mapED, fragment).commit();
getFragmentManager().executePendingTransactions();
theMap = fragment.getMap();
我在onResume()
中编写了下面的代码,现在它可以工作了……我不知道这是不是正确的方法
@Override
public void onResume() {
// TODO Auto-generated method stub
super.onResume();
theMap = mapView.getMap();
Log.v("theMap1", ""+theMap);
Log.v("lng", ""+lng);
Log.v("lat", ""+lat);
latLng = new LatLng(lng, lat);
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title(locString);
Log.v("markerOptions", ""+markerOptions);
theMap.addMarker(markerOptions);
theMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
CameraUpdate center=
CameraUpdateFactory.newLatLngZoom(new LatLng(lat,
lng),16);
CameraUpdate zoom = CameraUpdateFactory.zoomTo(15);
theMap.moveCamera(center);
theMap.animateCamera(zoom);
}
在oncreateview中
mapView = CustomMapFragmentForEventDetails.newInstance();
FragmentTransaction fragmentTransaction = getChildFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.mapED, mapView);
fragmentTransaction.commit();
lng = Double.parseDouble(selectedFeedObject.eventlongitude);
lat = Double.parseDouble(selectedFeedObject.eventlatitude);
在CustomMapFragmentForEventDetails中
public class CustomMapFragmentForEventDetails extends SupportMapFragment {
SupportMapFragment mSupportMapFragment;
GoogleMap googleMap;
OnMapReadyListener mOnMapReadyListener;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
super.onCreateView(inflater, container, savedInstanceState);
Log.v("Inside CustomMapFrag", "Success");
View root = inflater.inflate(R.layout.event_details_dialog_layout, null, false);
initilizeMap();
return root;
}
@Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
mOnMapReadyListener = (OnMapReadyListener) activity;
}
private void initilizeMap()
{
mSupportMapFragment = (SupportMapFragment) getFragmentManager().findFragmentById(R.id.mapED);
if (mSupportMapFragment == null) {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
mSupportMapFragment = SupportMapFragment.newInstance();
fragmentTransaction.replace(R.id.mapED, mSupportMapFragment).commit();
}
if (mSupportMapFragment != null)
{
googleMap = mSupportMapFragment.getMap();
if (googleMap != null)
{
Log.v("MAP GOOGLE in CustomMApfragment", ":: "+googleMap);
mOnMapReadyListener.onMapReady(googleMap);
}
}
}
public static interface OnMapReadyListener {
void onMapReady(GoogleMap googleMap);
}
}
现在我得到java.lang.IllegalStateException:Recursive entry to executePendingTransactions错误…很抱歉,这是因为onCreateView
已在事务中执行。所以我解释的是:映射片段事务异步执行。您可以:1)如果API级别大于17,则使用Fragment.getChildFragmentManager()。2) 使用本文中描述的异步技术:。这也可以通过使用getActivity.runOnUiThread(Runnable)
来完成。谢谢……我得到了解决方案。我不知道这是正确的方法……可能至少有一段时间……但这个问题已经解决了……下面给出了答案
public class CustomMapFragmentForEventDetails extends SupportMapFragment {
SupportMapFragment mSupportMapFragment;
GoogleMap googleMap;
OnMapReadyListener mOnMapReadyListener;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
super.onCreateView(inflater, container, savedInstanceState);
Log.v("Inside CustomMapFrag", "Success");
View root = inflater.inflate(R.layout.event_details_dialog_layout, null, false);
initilizeMap();
return root;
}
@Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
mOnMapReadyListener = (OnMapReadyListener) activity;
}
private void initilizeMap()
{
mSupportMapFragment = (SupportMapFragment) getFragmentManager().findFragmentById(R.id.mapED);
if (mSupportMapFragment == null) {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
mSupportMapFragment = SupportMapFragment.newInstance();
fragmentTransaction.replace(R.id.mapED, mSupportMapFragment).commit();
}
if (mSupportMapFragment != null)
{
googleMap = mSupportMapFragment.getMap();
if (googleMap != null)
{
Log.v("MAP GOOGLE in CustomMApfragment", ":: "+googleMap);
mOnMapReadyListener.onMapReady(googleMap);
}
}
}
public static interface OnMapReadyListener {
void onMapReady(GoogleMap googleMap);
}
}