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POopen different activities from map overlays
 

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    <p>I am a very little experienced android programmer.</p> <p>I have a list activity and each list item opens a new activity. There is a Map in the app where it shows balloon overlays of the locations. There are, say 4 locations, when i click any of the balloon overlay i need the activity of the corresponding index. Eg: If i click on the balloon with index = 1, i need to display the 1st item of the list in an activity.</p> <p>I am currently using the code below.</p> <pre><code>@Override protected boolean onBalloonTap(int index, OverlayItem item) { Toast.makeText(c, "onBalloonTap for overlay index " + index, Toast.LENGTH_LONG).show(); int index1 = index; Intent i = new Intent(c,FestivalEvents.class); i.putExtra("banner", "index1"); c.startActivity(i); return true; } </code></pre> <p>I am catching the intent in another activity, i.e. FestivalEvents.class as below</p> <pre><code>Bundle eventExtra = getIntent().getExtras(); if(eventExtra!=null){ int position = eventExtra.getInt("banner"); Log.i("banner", "" + position); switch(position){ case 0: Toast.makeText(mContext, ""+ position, Toast.LENGTH_LONG).show();setUpDesc(position);break; case 1:Toast.makeText(mContext, ""+ position,Toast.LENGTH_LONG).show();setUpDesc(position);break; case 2:Toast.makeText(mContext, ""+ position, Toast.LENGTH_LONG).show();setUpDesc(position);break; case 3:Toast.makeText(mContext, ""+ position, Toast.LENGTH_LONG).show();setUpDesc(position);break; } } </code></pre> <p>the app crashes with a null pointer exception with this code. I hope my code is proper in receiving intents. Or may be i'm wrong in handling the recieving intent. I am having big time solving this. Can anybody please tell me where i may have gone wrong?</p> <p><strong>EDIT</strong> my logcat:</p> <p><code>11-02 18:45:38.858: ERROR/AndroidRuntime(21168): FATAL EXCEPTION: main 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sysponent.bedford/com.sysponent.bedford.FestivalEvents}: java.lang.NullPointerException 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.os.Handler.dispatchMessage(Handler.java:99) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.os.Looper.loop(Looper.java:130) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.app.ActivityThread.main(ActivityThread.java:3687) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at java.lang.reflect.Method.invokeNative(Native Method) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at java.lang.reflect.Method.invoke(Method.java:507) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168):at dalvik.system.NativeStart.main(Native Method) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): Caused by: java.lang.NullPointerException 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at com.sysponent.bedford.FestivalEvents.onCreate(FestivalEvents.java:239) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 11-02 18:45:38.858: ERROR/AndroidRuntime(21168):at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) </code></p> <p>Thank you</p>
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    1. COThe problem is in `onCreate()`, can I see some more code?
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