我正在开发一个Android应用程序,其中我想在我的活动中的特定位置使用地图,那么我如何将fragmentActivity i作为活动? 在这里你会发现我的fragmentActivity是java代码
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, LocationListener {
public static FragmentManager fragmentManager;
private GoogleMap mMap;
private LocationManager locationManager;
private boolean isGPSEnabled, isNetworkEnabled, isGPSTrackingEnabled;
private String provider_info;
private static String TAG = MapsActivity.class.getName();
private Location location;
private double latitude;
private double longitude;
// The minimum distance to change updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// initialising the object of the FragmentManager. Here I'm passing getSupportFragmentManager(). You can pass getFragmentManager() if you are coding for Android 3.0 or above.
fragmentManager = getSupportFragmentManager();
getMyLocation();
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mMap.setMyLocationEnabled(true);
LocationManager locationManager = (LocationManager) this.getSystemService(LOCATION_SERVICE);
return;
}
public void onLocationChanged(Location location) {
//txtOutput.setText(location.toString());
System.out.println(String.valueOf(location.getLatitude()));
System.out.println(String.valueOf(location.getLongitude()));
try {
mMap.clear();
} catch (Exception e) {
}
LatLng mypos = new LatLng(location.getLatitude(), location.getLongitude());
//camera annimation
CameraPosition camPos = new CameraPosition.Builder().target(mypos)
.zoom(70)
.bearing(45)
.tilt(65)
.build();
CameraUpdate camUpd3 = CameraUpdateFactory.newCameraPosition(camPos);
mMap.animateCamera(camUpd3);
mMap.addMarker(new MarkerOptions().position(mypos).title("here i am !!"));
// mMap.moveCamera(CameraUpdateFactory.newLatLng(mypos));
//map.moveCamera(CameraUpdateFactory.newLatLng(mypos));
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
void getMyLocation(){
// definition of the location manager
LocationManager locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
//definition of the listenner
LocationListener locationListener = new LocationListener() {
// Called when a new location is found by the network location provider.
public void onLocationChanged(Location location) {
// setting the camera of the map to positionate the marker in the current position
LatLng myLaLn = new LatLng(location.getLatitude(), location.getLongitude());
CameraPosition camPos = new CameraPosition.Builder().target(myLaLn)
.zoom(15)
.bearing(45)
.tilt(70)
.build();
CameraUpdate camUpd3 = CameraUpdateFactory.newCameraPosition(camPos);
mMap.animateCamera(camUpd3);
// setting the marker in the current position
Marker marker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(location.getLatitude(), location.getLongitude()))
.title("My position")
.snippet("Population: 776733"));
//toast to give you the latitude and longitude of yoiu current position
Toast toast = Toast.makeText(getApplicationContext(), "your current location is : longitude :"+location.getLongitude()+"latitude: "+location.getLatitude(), Toast.LENGTH_SHORT);
toast.show();
}
public void onStatusChanged(String provider, int status, Bundle extras) {}
public void onProviderEnabled(String provider) {}
public void onProviderDisabled(String provider) {}
};
//set the frequency of updates
locManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
//check the permission
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
Location location = locManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
}