GPS Location abfragen

1List<Overlay> mapOverlays = mapView.getOverlays();
2 Drawable drawable = this.getResources().getDrawable(R.drawable.mark_red);
3 AddItemizedOverlay itemizedOverlay =
4 new AddItemizedOverlay(drawable, this);

1<?xml version="1.0" encoding="utf-8"?>
2<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3 android:layout_width="match_parent"
4 android:layout_height="match_parent"
5 android:orientation="vertical" >
6
7 <LinearLayout
8 android:id="@+id/linearLayout1"
9 android:layout_width="match_parent"
10 android:layout_height="wrap_content"
11 android:layout_marginTop="40dip"
12 android:orientation="horizontal" >
13
14 <TextView
15 android:id="@+id/TextView01"
16 android:layout_width="wrap_content"
17 android:layout_height="wrap_content"
18 android:layout_marginLeft="10dip"
19 android:layout_marginRight="5dip"
20 android:text="Latitude: "
21 android:textSize="20dip" >
22 </TextView>
23
24 <TextView
25 android:id="@+id/TextView02"
26 android:layout_width="wrap_content"
27 android:layout_height="wrap_content"
28 android:text="unknown"
29 android:textSize="20dip" >
30 </TextView>
31 </LinearLayout>
32
33 <LinearLayout
34 android:id="@+id/linearLayout2"
35 android:layout_width="match_parent"
36 android:layout_height="wrap_content" >
37
38 <TextView
39 android:id="@+id/TextView03"
40 android:layout_width="wrap_content"
41 android:layout_height="wrap_content"
42 android:layout_marginLeft="10dip"
43 android:layout_marginRight="5dip"
44 android:text="Longitute: "
45 android:textSize="20dip" >
46 </TextView>
47
48 <TextView
49 android:id="@+id/TextView04"
50 android:layout_width="wrap_content"
51 android:layout_height="wrap_content"
52 android:text="unknown"
53 android:textSize="20dip" >
54 </TextView>
55 </LinearLayout>
56
57</LinearLayout>

1package com.example.sos;
2
3import android.app.Activity;
4import android.content.Context;
5import android.location.Criteria;
6import android.location.Location;
7import android.location.LocationListener;
8import android.location.LocationManager;
9import android.os.Bundle;
10import android.widget.TextView;
11import android.widget.Toast;
12
13public class ShowLocationActivity extends Activity implements LocationListener {
14 private TextView latituteField;
15 private TextView longitudeField;
16 private LocationManager locationManager;
17 private String provider;
18
19
20/** Called when the activity is first created. */
21
22 @Override
23 public void onCreate(Bundle savedInstanceState) {
24 super.onCreate(savedInstanceState);
25 setContentView(R.layout.gps);
26 latituteField = (TextView) findViewById(R.id.TextView02);
27 longitudeField = (TextView) findViewById(R.id.TextView04);
28
29 latituteField = (TextView) findViewById(R.id.TextView02);
30 longitudeField = (TextView) findViewById(R.id.TextView04);
31
32 // Get the location manager
33 locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
34 // Define the criteria how to select the locatioin provider -> use
35 // default
36 Criteria criteria = new Criteria();
37 provider = locationManager.getBestProvider(criteria, false);
38 Location location = locationManager.getLastKnownLocation(provider);
39
40 // Initialize the location fields
41 if (location != null) {
42 System.out.println("Provider " + provider + " has been selected.");
43 onLocationChanged(location);
44 } else {
45 latituteField.setText("Location not available");
46 longitudeField.setText("Location not available");
47 }
48 }
49
50 /* Request updates at startup */
51 @Override
52 protected void onResume() {
53 super.onResume();
54 locationManager.requestLocationUpdates(provider, 400, 1, this);
55 }
56
57 /* Remove the locationlistener updates when Activity is paused */
58 @Override
59 protected void onPause() {
60 super.onPause();
61 locationManager.removeUpdates(this);
62 }
63
64 public void onLocationChanged(Location location) {
65 double lat = (location.getLatitude());
66 double lng = (location.getLongitude());
67 latituteField.setText(String.valueOf(lat));
68 longitudeField.setText(String.valueOf(lng));
69 }
70
71 public void onStatusChanged(String provider, int status, Bundle extras) {
72 // TODO Auto-generated method stub
73
74 }
75
76 public void onProviderEnabled(String provider) {
77 Toast.makeText(this, "Enabled new provider " + provider,
78 Toast.LENGTH_SHORT).show();
79
80 }
81
82 public void onProviderDisabled(String provider) {
83 Toast.makeText(this, "Disabled provider " + provider,
84 Toast.LENGTH_SHORT).show();
85 }
86}

1package com.example.sos;
2
3import java.util.ArrayList;
4import java.util.Collection;
5import java.util.HashMap;
6import java.util.List;
7
8import android.app.AlertDialog;
9import android.content.Context;
10import android.content.DialogInterface;
11import android.content.Intent;
12import android.location.Location;
13import android.location.LocationListener;
14import android.location.LocationManager;
15import android.os.Bundle;
16import android.provider.Settings;
17import android.util.Log;
18
19//Einfacher Multiplexer für Location-Zeugs
20public class LocationController implements LocationListener {
21 private static LocationController _shared;
22 private ArrayList<LocationListener> _listeners;
23 private LocationManager _locationManager;
24 private AlertDialog currentDialog;
25
26 public static LocationController sharedController() {
27 if(_shared == null)
28 _shared = new LocationController();
29 return _shared;
30 }
31
32 public LocationController() {
33 _listeners = new ArrayList<LocationListener>();
34 }
35
36 public void setContext(final Context ctx) {
37 assert _locationManager == null;
38 _locationManager = (LocationManager)ctx.getSystemService(Context.LOCATION_SERVICE);
39 String provider = Settings.Secure.getString(ctx.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
40 HashMap<String, String> askFor = new HashMap<String, String>();
41 askFor.put("network", "Netzwerk");
42 askFor.put("gps", "GPS");
43
44 if(provider != null) {
45 String[] active = provider.split(",");
46 for(String activeProvider : active) {
47 askFor.remove(activeProvider);
48 }
49 }
50 if(askFor.size() != 0) {
51 StringBuilder inactiveProviders = new StringBuilder();
52 Collection<String> values = askFor.values();
53 int idx = 0;
54 for(String inactiveProvider : values){
55 inactiveProviders.append(inactiveProvider);
56 if(idx != values.size() - 1)
57 inactiveProviders.append(" & ");
58 idx++;
59 }
60 Log.d("Location", provider+"");
61
62
63 AlertDialog safe = new AlertDialog.Builder(ctx)
64 .setTitle(inactiveProviders.toString()+" aktivieren!")
65 .setPositiveButton("Okay", new DialogInterface.OnClickListener() {
66 public void onClick(DialogInterface dialog, int whichButton) {
67 LocationController.this.dismissCurrent();
68 Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
69 ctx.startActivity(intent);
70 }
71 }).create();
72
73 safe.show();
74 Log.d("fertig","fertig");
75 }
76 }
77
78 public void dismissCurrent() {
79 if(currentDialog == null) return;
80 currentDialog.dismiss();
81 currentDialog = null;
82 }
83
84 public void startUpdating() {
85 assert _locationManager != null;
86 List<String> providers = _locationManager.getAllProviders();
87 for (int i = 0 ; i < providers.size(); i++){
88 _locationManager.requestLocationUpdates(providers.get(i), 1, 1, this);
89 }
90 }
91
92 public void stopUpdating() {
93 _locationManager.removeUpdates(this);
94 }
95
96 public void addListener(LocationListener listener) {
97 _listeners.add(listener);
98 if(listener instanceof Context)
99 this.setContext((Context)listener);
100 }
101
102 public void removeListener(LocationListener listener) {
103 _listeners.remove(listener);
104 }
105
106 public void onLocationChanged(Location location) {
107 Log.d("Location", "Location changed to ("+location.getLatitude()+"|"+location.getLongitude()+") by Provider ");
108 for(LocationListener listener : _listeners) {
109 listener.onLocationChanged(location);
110 }
111 }
112
113 public void onProviderDisabled(String provider) {
114 for(LocationListener listener : _listeners) {
115 listener.onProviderDisabled(provider);
116 }
117 }
118
119 public void onProviderEnabled(String provider) {
120 for(LocationListener listener : _listeners) {
121 listener.onProviderEnabled(provider);
122 }
123 }
124
125 public void onStatusChanged(String provider, int status, Bundle extras) {
126 for(LocationListener listener : _listeners) {
127 listener.onStatusChanged(provider, status, extras);
128 }
129 }
130
131}

1LocationController.sharedController().addListener(this);

1LocationController.sharedController().startUpdating();

1LocationController.sharedController().stopUpdating();