我对 com.google.android.gms.maps.MapView 有一个奇怪的问题。为了检查我的应用程序在垃圾收集器完成他的工作后是否崩溃,我强制我的 HTC One (4.2.2) 只允许在后台运行 1 个应用程序。如果我在显示 MapView 时离开我的应用程序(主页按钮),启动任何其他应用程序并恢复到我的应用程序,我的 MapView 仍然显示...但我无法移动或缩放地图,它根本没有响应。其他活动运行良好。我真的不知道问题出在哪里。
希望有人可以帮助我吗?
这是我的片段的源代码,显示了 MapView 公共类 FragmentAdvertlistMap extends Fragment {
com.google.android.gms.maps.MapView m;
GoogleMap mMap;
ArrayList<Advert> ads;
HashMap<Marker, String> myMarker;
public final LatLngBounds.Builder builder= new LatLngBounds.Builder();
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
try {
MapsInitializer.initialize(getActivity());
} catch (GooglePlayServicesNotAvailableException e) {
// TODO handle this situation
}
View inflatedView = inflater.inflate(R.layout.activity_advert_tab2, container, false);
m = (com.google.android.gms.maps.MapView)inflatedView.findViewById(R.id.map_tab);
m.onCreate(savedInstanceState);
myMarker = new HashMap<Marker, String>();
ads= AdvertListActivity.getAdverts();
setUpMapIfNeeded(inflatedView);
mMap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
@Override
public void onInfoWindowClick(Marker arg0) {
Intent myIntent = new Intent(getActivity(), AdvertLocationActivity.class);
Advert putadvert = DefaultApplication.dbc.getAdvertForAdvertID(Integer.parseInt(myMarker.get(arg0)));
myIntent.putExtra("advert", putadvert);
startActivity(myIntent);
}
});
return inflatedView;
}
private void setUpMapIfNeeded(View inflatedView) {
if (mMap == null) {
mMap = ((com.google.android.gms.maps.MapView) inflatedView.findViewById(R.id.map_tab)).getMap();
if (mMap != null) {
this.initMarker();
}
}
}
public void initMarker(){
for(int i=0;i<ads.size();i++){
Advert tempAd = ads.get(i);
LatLng tlalo = new LatLng(tempAd.mainLocation.latitude,tempAd.mainLocation.longitude);
builder.include(tlalo);
String address = "";
if(tempAd.mainLocation.contact_street != null){
address = address + tempAd.mainLocation.contact_street;
}
if(tempAd.mainLocation.contact_street_number != null){
address = address + " " + tempAd.mainLocation.contact_street_number;
}
Marker marker = mMap.addMarker(new MarkerOptions()
.position(tlalo)
.anchor(0.5f, 0.5f)
.title(tempAd.name)
.snippet(address)
.icon(BitmapDescriptorFactory.fromResource(R.drawable.androidpin)));
myMarker.put(marker,String.valueOf(tempAd.myid));
}
mMap.setOnCameraChangeListener(new OnCameraChangeListener() {
@Override
public void onCameraChange(CameraPosition arg0) {
mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(builder.build(), 100));
mMap.setOnCameraChangeListener(null);
}
});
}
@Override
public void onResume() {
super.onResume();
m.onResume();
}
@Override
public void onPause() {
super.onPause();
m.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
m.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
m.onLowMemory();
}
}