我想使用Google地图，OnlocationChangeListener，但因为我已经实施了
implements DatePickerFragment.OnDATEClickListener{
由于上面需要继续实现，这使得实现OnlocationChangeListener变得非常困难。此外，onLocationchangelistener代码目前会延伸fragmentActivity，而我当前的代码extends fragment会产生更多问题。
问题是：我无法扩展或实施任何其他内容，因为我已经在实施和扩展。这意味着我无法使OnlocationChangeListener工作
你知道有什么工作吗？
（允许我实施DatePickerFragment.OnDATEClickListener同时实施Google OnlocationChangeListener。同时我的代码也继续扩展片段而不是片段活动）
我当前的代码：
public class HomeFragment extends Fragment implements DatePickerFragment.OnDATEClickListener{
public HomeFragment(){}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
return rootView;
}
}
Google地图位置更改侦听器代码：
public class MainActivity extends FragmentActivity implements OnMyLocationChangeListener {
GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Getting Google Play availability status
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());
// Showing status
if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available
int requestCode = 10;
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode);
dialog.show();
}else { // Google Play Services are available
// Getting reference to the SupportMapFragment of activity_main.xml
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// Getting GoogleMap object from the fragment
googleMap = fm.getMap();
// Enabling MyLocation Layer of Google Map
googleMap.setMyLocationEnabled(true);
// Setting event handler for location change
googleMap.setOnMyLocationChangeListener(this);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public void onMyLocationChange(Location location) {
//Location stuff
}
}
答案 0 :(得分：2)
以下是我在示例应用中实施 Google地图的方式：
首先：将支持库添加到eclipse，并确保您正在构建的应用程序包含库。
之后执行如下：
public class MainActivity extends FragmentActivity implements LocationListener,
OnMapClickListener, OnMapLongClickListener {
private static final int GPS_ERRORDIALOG_REQUEST = 9001;
GoogleMap map;
List<Address> matches;
TextView tvLocation;
String addressText;
double latitude;
double longitude;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (servicesOK()) {
Toast.makeText(this, "Ready to map!!", Toast.LENGTH_LONG).show();
setContentView(R.layout.activity_main);
// Getting reference to the SupportMapFragment of activity_main.xml
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
// Getting GoogleMap object from the fragment
map = fm.getMap();
// Enabling MyLocation Layer of Google Map
map.setMyLocationEnabled(true);
// Getting LocationManager object from System Service
// LOCATION_SERVICE
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
// Creating a criteria object to retrieve provider
Criteria criteria = new Criteria();
// Getting the name of the best provider
String provider = locationManager.getBestProvider(criteria, true);
// Getting Current Location
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
onLocationChanged(location);
}
locationManager.requestLocationUpdates(provider, 20000, 0, this);
} else {
setContentView(R.layout.activity_main);
}
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
位置已更改：
@Override
public void onLocationChanged(Location location) {
tvLocation = (TextView) findViewById(R.id.tv_location);
// Getting latitude of the current location
latitude = location.getLatitude();
// Getting longitude of the current location
longitude = location.getLongitude();
// Creating a LatLng object for the current location
LatLng latLng = new LatLng(latitude, longitude);
// Showing the current location in Google Map
map.moveCamera(CameraUpdateFactory.newLatLng(latLng));
// Zoom in the Google Map
map.animateCamera(CameraUpdateFactory.zoomTo(15));
map.addMarker(new MarkerOptions().position(
new LatLng(latitude, longitude)).title(addressText));
map.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
Toast.makeText(getBaseContext(), "marker clicked",
Toast.LENGTH_LONG).show();
return false;
}
});
// TODO Auto-generated method stub
Geocoder geoCoder = new Geocoder(this);
try {
matches = geoCoder.getFromLocation(latitude, longitude, 1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Address bestMatch = (matches.isEmpty() ? null : matches.get(0));
addressText = String.format("%s, %s, %s", bestMatch
.getMaxAddressLineIndex() > 0 ? bestMatch.getAddressLine(0)
: "", bestMatch.getLocality(), bestMatch.getCountryName());
}
@Override
public void onMapLongClick(LatLng point) {
// TODO Auto-generated method stub
}
@Override
public void onMapClick(LatLng point) {
// TODO Auto-generated method stub
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
检查服务是否正常，然后继续构建地图
public boolean servicesOK() {
int isAvailable = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(this);
if (isAvailable == ConnectionResult.SUCCESS) {
return true;
} else if (GooglePlayServicesUtil.isUserRecoverableError(isAvailable)) {
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(isAvailable,
this, GPS_ERRORDIALOG_REQUEST);
dialog.show();
} else {
Toast.makeText(this, "Cant connect!!", Toast.LENGTH_SHORT).show();
}
return false;
}
}
最后，清单：
<permission
android:name="com.mike.maps.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.mapsexample.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name ="android.permission.ACCESS_NETWORK_STATE"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
在应用程序代码：
中
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="Your Api" />
希望这能回答你的问题.. :)