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PONull Pointer Exception on Longitude and Latitude
 

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  1. PONull Pointer Exception on Longitude and Latitude
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    <p>the following code for deriving longitude and latitude gives me a NPE</p> <p>Initial Declarations:</p> <pre><code>double longitude, latitude; Location location; LocationManager manager; </code></pre> <p><strong>code:</strong></p> <pre><code>final LocationListener locationListener = new LocationListener(){ @Override public void onLocationChanged(Location arg0) { // TODO Auto-generated method stub latitude = location.getLatitude(); longitude = location.getLongitude(); } @Override public void onProviderDisabled(String arg0) { // TODO Auto-generated method stub } @Override public void onProviderEnabled(String arg0) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String arg0, int arg1, Bundle arg2) { // TODO Auto-generated method stub } }; manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener); location = manager.getLastKnownLocation(LocationManager.GPS_PROVIDER); longitude = location.getLongitude(); latitude = location.getLatitude(); Toast.makeText(getApplicationContext(), "lat and lon"+latitude+" "+longitude, Toast.LENGTH_LONG).show(); </code></pre> <p>The NPE occurs in</p> <pre><code>longitude = location.getLongitude(); //Line 91 </code></pre> <p>The logCat:</p> <pre><code>09-01 09:58:27.689: D/AndroidRuntime(3073): Shutting down VM 09-01 09:58:27.689: W/dalvikvm(3073): threadid=1: thread exiting with uncaught exception (group=0x40df98a8) 09-01 09:58:27.749: E/AndroidRuntime(3073): FATAL EXCEPTION: main 09-01 09:58:27.749: E/AndroidRuntime(3073): java.lang.NullPointerException 09-01 09:58:27.749: E/AndroidRuntime(3073): at com.vaw.selfhelp.SmsActivity$2.onClick(SmsActivity.java:91) 09-01 09:58:27.749: E/AndroidRuntime(3073): at android.view.View.performClick(View.java:4091) 09-01 09:58:27.749: E/AndroidRuntime(3073): at android.view.View$PerformClick.run(View.java:17072) 09-01 09:58:27.749: E/AndroidRuntime(3073): at android.os.Handler.handleCallback(Handler.java:615) 09-01 09:58:27.749: E/AndroidRuntime(3073): at android.os.Handler.dispatchMessage(Handler.java:92) 09-01 09:58:27.749: E/AndroidRuntime(3073): at android.os.Looper.loop(Looper.java:153) 09-01 09:58:27.749: E/AndroidRuntime(3073): at android.app.ActivityThread.main(ActivityThread.java:4987) 09-01 09:58:27.749: E/AndroidRuntime(3073): at java.lang.reflect.Method.invokeNative(Native Method) 09-01 09:58:27.749: E/AndroidRuntime(3073): at java.lang.reflect.Method.invoke(Method.java:511) 09-01 09:58:27.749: E/AndroidRuntime(3073): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 09-01 09:58:27.749: E/AndroidRuntime(3073): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584) 09-01 09:58:27.749: E/AndroidRuntime(3073): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>The following permission are used:</p> <pre><code>&lt;uses-permission android:name="android.permission.CALL_PHONE"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/&gt; &lt;uses-permission android:name="android.permission.SEND_SMS"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/&gt; </code></pre>
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    1. This table or related slice is empty.
    1. USRakeeb Rajbhandari
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    1. CO@MT8 is it always necessary to have the device out ? When the application is deployed, there's no telling where people will be at.
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      1. PONull Pointer Exception on Longitude and Latitude
      1. USRakeeb Rajbhandari
    2. COYaa but in GPS signals might not be good inside the building. Also if you place if around tall buildings then then reception might be poor. That's why you might need to use more than one providers, if available.
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      1. PONull Pointer Exception on Longitude and Latitude
      1. USShobhit Puri
    3. CO@ShobhitPuri how do i do that ?
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      1. PONull Pointer Exception on Longitude and Latitude
      1. USRakeeb Rajbhandari
 

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