私のアプリケーションは次のように動作します。
- すべてのアクティビティに対して1つのロケーションリスナーがいます
- 私のロケーションリスナー（ロケーションリスナーを含む）は、変更されたロケーションでブロードキャストを送信します
- すべてのアクティビティには放送受信機があり、地図上に場所を設定できます
そのように動作している必要がありますが、私のサービスでさえ開始されません。私はこのアプリを書くのに疲れているので、ここにコードを配置します。おそらく、いくつかの単純な問題を見落としていました。私はそのトピックについて助けが必要です：
GPSサービス：
// package and imports
public class GeoService extends Service {
LocationListener GPSLocationListener, NetworkLocationListener;
LocationManager locationManager;
private IBinder mBinder;
@Override
public void onCreate() {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
getPosition();
return Service.START_REDELIVER_INTENT;
}
@Override
public IBinder onBind(Intent intent) {
getPosition();
if (mBinder == null) mBinder = new GeoBinder();
return mBinder;
}
private void getPosition() {
GPSLocationListener = new LocationListener() {
public void onLocationChanged(Location location) {
sendPosition(location);
}
public void onProviderDisabled(String provider) {
Toast.makeText(getApplicationContext(), provider + " is now disabled. Turn it on to find better GPS position.", Toast.LENGTH_SHORT).show();
}
public void onProviderEnabled(String provider) {
Toast.makeText(getApplicationContext(), provider.toUpperCase() + " is now enabled. Waiting for better position..", Toast.LENGTH_SHORT).show();
}
public void onStatusChanged(String provider, int status, Bundle extras) {
switch (status) {
case 0:
case 1:
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, NetworkLocationListener);
break;
case 2:
locationManager.removeUpdates(NetworkLocationListener);
break;
}
}
};
NetworkLocationListener = new LocationListener() {
public void onLocationChanged(Location location) {
sendPosition(location);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, GPSLocationListener);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, NetworkLocationListener);
if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) && !locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) alert();
}
private void alert() {
AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext());
builder.setMessage("Internet connection and GPS are not avaiable!.").setCancelable(false).setTitle("No location provider!").setIcon(android.R.drawable.ic_dialog_alert).setPositiveButton("Change settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
startActivity(new Intent(getApplicationContext(), SettingsActivity.class));
}
}).create().show();
}
void sendPosition(Location location) {
Intent gpsPosition = new Intent();
gpsPosition.putExtra("location", location);
gpsPosition.setAction(Context.LOCATION_SERVICE);
sendBroadcast(gpsPosition);
}
public GeoPoint getGeoPoint(final Location loc) {
int lat = (int) (loc.getLatitude() * 1e6);
int lon = (int) (loc.getLongitude() * 1e6);
return new GeoPoint(lat, lon);
}
public GeoPoint getLastLocation() {
GeoPoint lastKnownPoint;
Location lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (lastKnownLocation == null) lastKnownLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (lastKnownLocation != null) lastKnownPoint = getGeoPoint(lastKnownLocation);
else lastKnownPoint = new GeoPoint((int) (51.110582 * 1E6), (int) (17.031509 * 1E6));
return lastKnownPoint;
}
@Override
public void onDestroy() {
locationManager.removeUpdates(GPSLocationListener);
locationManager.removeUpdates(NetworkLocationListener);
}
public class GeoBinder extends Binder {
public GeoService getService() {
return GeoService.this;
}
}
}
アクティビティの1つ:(サービスを開始またはバインドしようとしましたが、どのメソッドも機能していないようです）。
// package and imports
public class ShareLocationActivity extends MapActivity {
private final int PICK_CONTACT = 123;
MapView.LayoutParams mapMarkerParams;
MapController mapController;
Location lastLocation;
ImageView mapMarker;
GeoPoint current;
MapView map;
private ServiceConnection mConnection;
GeoService mService;
boolean mBound = false;
BroadcastReceiver locationReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
setPosition((Location) intent.getParcelableExtra("location"));
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_share_location);
mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName name, IBinder service) {
GeoBinder binder = (GeoBinder) service;
mService = binder.getService();
mBound = true;
mapController = map.getController();
mapController.setCenter(mService.getLastLocation());
mapController.setZoom(17);
}
public void onServiceDisconnected(ComponentName name) {
mBound = false;
}
};
Intent intent = new Intent(this, GeoService.class);
startService(intent);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
map = (MapView) findViewById(R.id.shareMapView);
map.setBuiltInZoomControls(true);
map.setSaveEnabled(true);
mapMarker = new ImageView(getApplicationContext());
mapMarker.setImageResource(android.R.drawable.presence_online);
Button share = (Button) findViewById(R.id.shareActivityButton);
share.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent contacts_intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(contacts_intent, PICK_CONTACT);
}
});
IntentFilter filter = new IntentFilter();
filter.addAction(Context.ACTIVITY_SERVICE);
registerReceiver(locationReceiver, filter);
}
@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
super.onActivityResult(reqCode, resultCode, data);
switch (reqCode) {
case (PICK_CONTACT):
if (resultCode == Activity.RESULT_OK) {
if (current != null) sendSms(data);
else Toast.makeText(getApplicationContext(), "No GPS data yet..", Toast.LENGTH_SHORT).show();
}
break;
}
}
@Override
protected void onResume() {
super.onResume();
if (!mBound) {
Intent intent = new Intent(this, GeoService.class);
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
}
};
@Override
protected void onPause() {
map.removeAllViews();
if (mBound) {
unbindService(mConnection);
mBound = false;
}
super.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
map.removeAllViews();
}
void setPosition(Location location) {
map.removeAllViews();
current = mService.getGeoPoint(location);
mapMarkerParams = new MapView.LayoutParams(android.view.ViewGroup.LayoutParams.WRAP_CONTENT, android.view.ViewGroup.LayoutParams.WRAP_CONTENT, current, MapView.LayoutParams.TOP_LEFT);
map.addView(mapMarker, mapMarkerParams);
mapController.setCenter(current);
}
@Override
protected boolean isRouteDisplayed() {
return false;
}
}
そして確かにマニフェスト：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="gps.counter"
android:versionCode="1"
android:versionName="1.0" >
<uses-feature android:name="android.hardware.location" />
<uses-feature android:name="android.hardware.location.gps" />
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<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_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.CONTROL_LOCATION_UPDATES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
<application
android:icon="@drawable/ico"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar" >
<uses-library android:name="com.google.android.maps" />
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SaveLocationActivity" />
<activity android:name=".ShareLocationActivity" />
<activity android:name=".RecordTrackActivity" />
<activity android:name=".SettingsActivity" />
<service
android:name=".GeoService"
android:enabled="true" />
</application>
</manifest>