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POAndroid Google Map V2 - Find my location error
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  1. POAndroid Google Map V2 - Find my location error
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    copied!<p>I'm trying to retrieve the device's location but I faced several problems:</p> <p>My LogCat:</p> <pre><code>07-21 22:23:34.072: E/AndroidRuntime(11634): FATAL EXCEPTION: main 07-21 22:23:34.072: E/AndroidRuntime(11634): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.Test.projecttest/com.Test.projecttest.MainActivity}: java.lang.NullPointerException 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2081) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2106) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.ActivityThread.access$700(ActivityThread.java:134) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1217) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.os.Handler.dispatchMessage(Handler.java:99) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.os.Looper.loop(Looper.java:137) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.ActivityThread.main(ActivityThread.java:4856) 07-21 22:23:34.072: E/AndroidRuntime(11634): at java.lang.reflect.Method.invokeNative(Native Method) 07-21 22:23:34.072: E/AndroidRuntime(11634): at java.lang.reflect.Method.invoke(Method.java:511) 07-21 22:23:34.072: E/AndroidRuntime(11634): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007) 07-21 22:23:34.072: E/AndroidRuntime(11634): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774) 07-21 22:23:34.072: E/AndroidRuntime(11634): at dalvik.system.NativeStart.main(Native Method) 07-21 22:23:34.072: E/AndroidRuntime(11634): Caused by: java.lang.NullPointerException 07-21 22:23:34.072: E/AndroidRuntime(11634): at com.Test.projecttest.MainActivity.setUpMap(MainActivity.java:82) 07-21 22:23:34.072: E/AndroidRuntime(11634): at com.Test.projecttest.MainActivity.onCreate(MainActivity.java:71) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.Activity.performCreate(Activity.java:5047) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 07-21 22:23:34.072: E/AndroidRuntime(11634): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2045) 07-21 22:23:34.072: E/AndroidRuntime(11634): ... 11 more </code></pre> <p>My MainActivity.java code:</p> <pre><code>public class MainActivity extends FragmentActivity implements OnClickListener, LocationListener { private GoogleMap map; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); SupportMapFragment fmap = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); map = fmap.getMap(); setUpMap(); } private void setUpMap() { map.setMyLocationEnabled(true); LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); Criteria criteria = new Criteria(); String provider = locationManager.getBestProvider(criteria, true); Location myLocation = locationManager.getLastKnownLocation(provider); map.setMapType(map.MAP_TYPE_HYBRID); double latitude = myLocation.getLatitude(); double longitude = myLocation.getLongitude(); LatLng latLng = new LatLng(latitude, longitude); map.moveCamera(CameraUpdateFactory.newLatLng(latLng)); map.animateCamera(CameraUpdateFactory.zoomTo(20)); map.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("I'M HERE")); } } </code></pre> <p>I also tried to use the codes on google.developer.com however its too confusing can't run really understand most of them and got errors when I tried to run them. What should I do to solve this problem? Comments are appreciated. :) </p>
 

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