我正在使用此代码获取用户的当前位置。
public class HomeActivity extends Activity implements LocationListener{
public static Context mContext;
private double latitude, longitude;
public LocationManager mLocManager;
// *******This is the new Code start on 11/4/2011 at 3 o'clock
/**
* This is the Home Button if user Login then it is move to TennisAppActivity otherwise move to Login
*
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
mContext=this;
super.onCreate(savedInstanceState);
setContentView(R.layout.homelayout);
mLocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
this);
mLocManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0,
0, this);
locationUpdate();
((Button) this.findViewById(R.id.ButtonHome))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
startActivity(new Intent(HomeActivity.this,
DefaultDisplay.class));
}
});
((Button) this.findViewById(R.id.ButtonProfile))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
if (GUIStatics.boolLoginStatus) {
startActivity(new Intent(HomeActivity.this,
MyProfile.class));
} else {
Intent intent=new Intent(HomeActivity.this,
Login.class);
intent.putExtra("moveTo","MyProfile");
startActivity(intent);
}
}
});
((Button) this.findViewById(R.id.ButtonNotifications))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
if (GUIStatics.boolLoginStatus) {
startActivity(new Intent(HomeActivity.this,
ShowAllNotificationActiviry.class));
} else {
Intent intent=new Intent(HomeActivity.this,
Login.class);
intent.putExtra("moveTo","ShowAllNotificationActiviry");
startActivity(intent);
}
}
});
((Button) this.findViewById(R.id.ButtonFavorites))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
if (GUIStatics.boolLoginStatus) {
startActivity(new Intent(HomeActivity.this,
FavoritesActivity.class));
} else {
Intent intent=new Intent(HomeActivity.this,
Login.class);
intent.putExtra("moveTo","FavoritesActivity");
startActivity(intent);
}
}
});
((Button) this.findViewById(R.id.ButtonMore))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
startActivity(new Intent(HomeActivity.this,
MoreListActivity.class));
}
});
}
public void locationUpdate()
{
CellLocation.requestLocationUpdate();
}
public void getAddress(double lat, double lng) {
Geocoder geocoder = new Geocoder(HomeActivity.mContext, Locale.getDefault());
try {
List<Address> addresses = geocoder.getFromLocation(lat, lng, 1);
Address obj = addresses.get(0);
String add = obj.getAddressLine(0);
GUIStatics.currentAddress = obj.getSubAdminArea() + ","
+ obj.getAdminArea();
GUIStatics.latitude = obj.getLatitude();
GUIStatics.longitude = obj.getLongitude();
GUIStatics.currentCity= obj.getSubAdminArea();
GUIStatics.currentState= obj.getAdminArea();
add = add + "\n" + obj.getCountryName();
add = add + "\n" + obj.getCountryCode();
add = add + "\n" + obj.getAdminArea();
add = add + "\n" + obj.getPostalCode();
add = add + "\n" + obj.getSubAdminArea();
add = add + "\n" + obj.getLocality();
add = add + "\n" + obj.getSubThoroughfare();
Log.v("IGA", "Address" + add);
// Toast.makeText(this, "Address=>" + add,
// Toast.LENGTH_SHORT).show();
// TennisAppActivity.showDialog(add);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
public void onLocationChanged(Location location) {
latitude = location.getLatitude();
longitude = location.getLongitude();
GUIStatics.latitude=location.getLatitude();
GUIStatics.longitude= location.getLongitude();
Log.v("Test", "IGA" + "Lat" + latitude + " Lng" + longitude);
//mLocManager.r
getAddress(latitude, longitude);
if(location!=null)
{
mLocManager.removeUpdates(this);
}
// Toast.makeText(this, "Lat" + latitude + " Lng" + longitude,
// Toast.LENGTH_SHORT).show();
}
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
Toast.makeText(HomeActivity.this, "Gps Disabled", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(
android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
if(arg1 ==
LocationProvider.TEMPORARILY_UNAVAILABLE) {
Toast.makeText(HomeActivity.this,
"LocationProvider.TEMPORARILY_UNAVAILABLE",
Toast.LENGTH_SHORT).show();
}
else if(arg1== LocationProvider.OUT_OF_SERVICE) {
Toast.makeText(HomeActivity.this,
"LocationProvider.OUT_OF_SERVICE", Toast.LENGTH_SHORT).show();
}
}
}
在这段代码中你可以找到
mLocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
这个）；
该方法第一个参数是provide，II-timeforupdate location，IIImindistance for update request，
mLocManager.removeUpdates(this);
上述调用方法在获取位置时删除位置更新，从而节省电池。