在的LocationManager服务 [英] LocationManager in service
本文介绍了在的LocationManager服务的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
是否有可能，使用 getSystemService 服务？我的服务类：
Is it possible, to use getSystemService in service? My service class:
private LocationManager locationManager;
private LocationListener locationListener;
IBinder mBinder = new LocalBinder();
public interface interfaceLocationService {
public Location currentBestLocation = null;
public void startListenLocation();
public void stopListenLocation();
public Location getUserLocation();
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
public class LocalBinder extends Binder implements interfaceLocationService{
public void StopListenLocation(){
locationManager.removeUpdates(locationListener);
locationListener = null;
stopSelf();
}
public void startListenLocation()
{
locationListener = new LocationListener() {
public void onStatusChanged(String provider, int status, Bundle extras) {
switch (status) {
// Provider out of service
case LocationProvider.OUT_OF_SERVICE:
Log.v(TAG, "Provider status changed: Out of Service");
break;
// Provider temporarily unavailable
case LocationProvider.TEMPORARILY_UNAVAILABLE:
Log.v(TAG, "Provider status changed: Temporarily Unavailable");
break;
// Provider available again
case LocationProvider.AVAILABLE:
Log.v(TAG, "Provider status changed: Available");
break;
}
}
public void onProviderEnabled(String provider) {
Log.v(TAG, "Provider enabled");
}
public void onProviderDisabled(String provider) {
Log.v(TAG, "Provider disabled");
// Settings brought up to connect
Intent intent = new Intent(
android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
public void onLocationChanged(Location location) {
Log.v(TAG, "Location Changed");
if (isBetterLocation(location, currentBestLocation)) {
currentBestLocation.set(location);
}
}
};
//if I have only one requestLocationUpdates situation is the same
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
400, 1, locationListener);
}
public Location getUserLocation(){
return currentBestLocation;
}
@Override
public void stopListenLocation() {
locationManager.removeUpdates(locationListener);
locationListener = null;
stopSelf();
}
}
@Override
public void onCreate() {
// Start thread
locationManager = (LocationManager)SendService.this.getSystemService(Context.LOCATION_SERVICE);
super.onCreate();
Log.d(TAG, "SendService created");
}
@Override
public void onDestroy() {
// Just destroy thread
super.onDestroy();
Log.d(TAG, "SendService destroyed");
}
和活动中我得到了code启动该服务：
And in activity I got code starting this service:
@Override
protected void onCreate(Bundle savedInstanceState) {
Intent intent = new Intent(this, SendService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className,
IBinder service) {
mService = (interfaceLocationService) service;
}
public void onServiceDisconnected(ComponentName arg0) {
Log.d("LOG","Service disconnected");
mService.stopListenLocation();
}
};
public void startClicked(View v) {
mService.startListenLocation();
}
这code给出LogCat中的错误：
This code gives an errors in LogCat:
11-12 17:01:02.171: E/AndroidRuntime(2719): FATAL EXCEPTION: main
11-12 17:01:02.171: E/AndroidRuntime(2719): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.app.ContextImpl.startActivity(ContextImpl.java:657)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.content.ContextWrapper.startActivity(ContextWrapper.java:258)
11-12 17:01:02.171: E/AndroidRuntime(2719): at com.example.gps.data.SendService$LocalBinder$1.onProviderDisabled(SendService.java:78)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:204)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.location.LocationManager$ListenerTransport.access$000(LocationManager.java:124)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.location.LocationManager$ListenerTransport$1.handleMessage(LocationManager.java:140)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.os.Handler.dispatchMessage(Handler.java:99)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.os.Looper.loop(Looper.java:143)
11-12 17:01:02.171: E/AndroidRuntime(2719): at android.app.ActivityThread.main(ActivityThread.java:4717)
11-12 17:01:02.171: E/AndroidRuntime(2719): at java.lang.reflect.Method.invokeNative(Native Method)
11-12 17:01:02.171: E/AndroidRuntime(2719): at java.lang.reflect.Method.invoke(Method.java:521)
11-12 17:01:02.171: E/AndroidRuntime(2719): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
11-12 17:01:02.171: E/AndroidRuntime(2719): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
11-12 17:01:02.171: E/AndroidRuntime(2719): at dalvik.system.NativeStart.main(Native Method)
简单：我能使用的LocationManager 听位置服务，而在背景吗？如果是的话，哪里是我的错？
Simply: Could I use LocationManager to listen to location in service while in background? If yes, then where is my mistake?
推荐答案
是的，当然你可以在服务使用的LocationManager。
Yes of course you can use the LocationManager in a service. for instance I am doing this in the onCreate method of the background service :
public void onCreate() {
mLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_COARSE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
String provider = mLocationManager.getBestProvider(criteria, true);
mLocationManager.requestLocationUpdates(provider, LOCATION_UPDATE_INTERVAL_MILLIS, LOCATION_UPDATE_INTERVAL_METERS, this);
}
这篇关于在的LocationManager服务的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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