CODEWITHSUNDEEP
androidgoogle-mapsandroid-intentnullpointerexception
jcfrei
jcfrei

Reputation: 1809

Android: NullPointerException for new Intent for Google Maps

I'm kinda stuck with this problem on android. I created a maps API application, with a custom overlay and every time I try to click an overlay and start an intent (google maps) the thing crashes:

possibly relevant code:

threadid=3: thread exiting with uncaught exception (group=0x4001b188)
Uncaught handler: thread main exiting due to uncaught exception
java.lang.NullPointerException
at android.app.Activity.startActivityForResult(Activity.java:2749)
at android.app.Activity.startActivity(Activity.java:2855)
at com.jcfrei.chparking.funtionality.startgmapsnav(funtionality.java:16)
 at com.jcfrei.chparking.ParkingOverlay.onTap(ParkingOverlay.java:91)
 at com.google.android.maps.ItemizedOverlay.onTap(ItemizedOverlay.java:453)
 at com.google.android.maps.OverlayBundle.onTap(OverlayBundle.java:83)
 at com.google.android.maps.MapView$1.onSingleTapUp(MapView.java:346)
 at android.view.GestureDetector.onTouchEvent(GestureDetector.java:506)
 at com.google.android.maps.MapView.onTouchEvent(MapView.java:628)
 at android.view.View.dispatchTouchEvent(View.java:3709)
 at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:852)
 at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
 at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
 at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
 at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
 at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
 at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
 at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
 at android.os.Handler.dispatchMessage(Handler.java:99)
 at android.os.Looper.loop(Looper.java:123)
 at android.app.ActivityThread.main(ActivityThread.java:4363)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:521)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
 at dalvik.system.NativeStart.main(Native Method)

and

 public class funtionality extends Activity {


   public void startgmapsnav (String lat, String lon) {

    Intent myIntent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse("geo:38.899533,-77.036476"));
         startActivity(myIntent);

}

 }

inside Overlay

    @Override
protected boolean onTap(int index)  {
  //OverlayItem item = mOverlays.get(index);


  funtionality lm = new funtionality();

  lm.startgmapsnav(lat, lon);

  return true;
}

Upvotes: 0

Views: 1046

Answers (2)

Falmarri
Falmarri

Reputation: 48569

What tutorial did you get

 funtionality lm = new funtionality();

  lm.startgmapsnav(lat, lon);

from?

You never, ever, ever, call new on a class that extends Activity. Ever. Period.

Upvotes: 3

Cheryl Simon
Cheryl Simon

Reputation: 46844

My best guess it that Uri.parse("geo:38.899533,-77.036476") is failing, and returning null. Did you verify that this creates the expected Uri?

Upvotes: 1

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