使用这个 需要在 google console里 生成自己的 API Key.网上很多
1. AndroidManifest.xml设置 权限与写入key值
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<meta-data android:name="com.google.android.geo.API_KEY" android:value="@string/google_maps_key" />
2.获取 当前的所在坐标与名称
public abstract class GoogleMapLocation {
Timer timer1; LocationManager lm; boolean gps_enabled = false; boolean network_enabled = false; String provide = null; private Context context; Geocoder mCoder;
public GoogleMapLocation(Context context){
this.context=context;
mCoder=new Geocoder(context, Locale.KOREA); getLocation(); }
/** * 위치를 가져온다 * @return: true가져오기 성공,false；실패 */ public boolean getLocation() {
//I use LocationResult callback class to pass location value from MyLocation to user code. if (lm == null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted. try {
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER); } catch (Exception ex) {
}
try {
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER); } catch (Exception ex) {
}
//don't start listeners if no provider is enabled if (!gps_enabled && !network_enabled)
return false;
if (gps_enabled) {
try {
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps); } catch (SecurityException e) {
Log.e("PERMISSION_EXCEPTION", "PERMISSION_NOT_GRANTED"); }
provide = "gps"; }
if (network_enabled) {
try {
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork); } catch (SecurityException e) {
Log.e("PERMISSION_EXCEPTION", "PERMISSION_NOT_GRANTED"); }
provide = "network"; }
timer1 = new Timer(); timer1.schedule(new GetLastLocation(), 10); return true; }
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel(); gotLocation(location);
try {
lm.removeUpdates(this); lm.removeUpdates(locationListenerNetwork);
} catch (SecurityException e) {
Log.e("PERMISSION_EXCEPTION", "PERMISSION_NOT_GRANTED"); }
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel(); gotLocation(location);
try {
lm.removeUpdates(this); lm.removeUpdates(locationListenerGps);
} catch (SecurityException e) {
Log.e("PERMISSION_EXCEPTION", "PERMISSION_NOT_GRANTED"); }
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
class GetLastLocation extends TimerTask {
@Override public void run() {
try {
lm.removeUpdates(locationListenerGps); lm.removeUpdates(locationListenerNetwork);
} catch (SecurityException e) {
Log.e("PERMISSION_EXCEPTION", "PERMISSION_NOT_GRANTED"); }
Location net_loc = null, gps_loc = null;
try {
if (gps_enabled)
gps_loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); if (network_enabled)
net_loc = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
} catch (SecurityException e) {
Log.e("PERMISSION_EXCEPTION", "PERMISSION_NOT_GRANTED"); }
//if there are both values use the latest one if (gps_loc != null && net_loc != null) {
if (gps_loc.getTime() > net_loc.getTime())
gotLocation(gps_loc); else gotLocation(net_loc); return; }
Message messag=new Message(); if (gps_loc != null) {
messag.obj=gps_loc; handler.sendMessage(messag); return; }
if (net_loc != null) {
messag.obj=net_loc; handler.sendMessage(messag); return; }
messag.obj=null; handler.sendMessage(messag); }
}
private Handler handler=new Handler(){
@Override public void handleMessage(Message msg) {
super.handleMessage(msg); Location location= (Location) msg.obj;
gotLocation(location); locationAddr(location); }
};
/** * 위치 내보내기 * @param location:위치 값 */ public abstract void gotLocation(Location location);
/** * 주소 명칭 반환 * @param addr */ public abstract void getLocaionAddr(String addr);
private String locationAddr(Location location){
String sLocationInfo=""; if (location!=null){
try {
List<Address> addresses=mCoder.getFromLocation(location.getLatitude(),location.getLongitude(),1); if (addresses!=null){
Address addr=addresses.get(0); for (int i = 0; i <= addr.getMaxAddressLineIndex(); i++) {
String addLine = addr.getAddressLine(i); sLocationInfo += String.format("%s", addLine); }
getLocaionAddr(sLocationInfo); }
}catch (IOException e){
}
}
return sLocationInfo; }
}
3.显示到 GoogleMap上并移动到 当前所在位置
>
如果实现 OnMapReadyCallback的话，当地图准备完以后就会进入onMapReady
>
SupportMapFragment语句中 把googlemap添加到 指定的id上， 也就是 R.id.map
R.id.map是一个 fragment
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
@Overrideprotected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.activity_maps); // Obtain the SupportMapFragment and get notified when the map is ready to be used. SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map); mapFragment.getMapAsync(this);
}
@Overridepublic void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LocationResult locationResult = new LocationResult() {
@Override public void gotLocation(Location location) {
String msg = "lon: "+location.getLongitude()+" -- lat: "+location.getLatitude(); Log.i("map", msg); drawMarker(location); }
}; MyLocation myLocation = new MyLocation(); myLocation.getLocation(getApplicationContext(), locationResult);}
<fragment xmlns:android="http://schemas.android.com/apk/res/android" xmlns:map="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/map" android:name="com.google.android.gms.maps.SupportMapFragment" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="mipl.amia.com.googlemapsample.MapsActivity" />
