android - Problems while trying to see the route between two locations using Google Maps -

i'm using background thread read sqlite database gps data...and store in geopoints.....after finish reading data wanna use intent in order see route described data.

here code:

protected list<geopoint> doinbackground(dbadapter... db) {     try {         db[0].opendatabase();         cursor c = db[0].getalldata();          if (c.movetofirst()) {             {                 longitude = integer.parseint(c.getstring(0));                 latitude = integer.parseint(c.getstring(1));                 p = new geopoint(latitude, longitude);                 geopointsarray.add(p);             } while (c.movetonext());         }         c.close();         db[0].close();     } catch (exception e) {         log.d("eroare", "doinbackground", e);     }     return geopointsarray; }  protected void onpostexecute(list<geopoint> geopointsarray) {     int = geopointsarray.size();     srcplace = geopointsarray.get(1);     destplace = geopointsarray.get(i);     intent intent = new intent(android.content.intent.action_view,             uri.parse(" http://maps.google.com?t=k&saddr=" + srcplace                     + "&daddr=" + destplace));     startactivity(intent); } 

but something, somewhere goes terribly wrong , next output of logcat:

uncaught handler: thread main exiting due uncaught exception java.lang.indexoutofboundsexception: invalid location 4180, size 4180   @ java.util.arraylist.get(arraylist.java:341)  @ test.android.screen_database$inittask.onpostexecute(screen_database.java:201)  @ test.android.screen_database$inittask.onpostexecute(screen_database.java:1)    @ android.os.asynctask.finish(asynctask.java:417)  @ android.os.asynctask.access$300(asynctask.java:127)  @ android.os.asynctask$internalhandler.handlemessage(asynctask.java:429)  @ android.os.handler.dispatchmessage(handler.java:99)  @ android.os.looper.loop(looper.java:123)  @ android.app.activitythread.main(activitythread.java:4363)  @ java.lang.reflect.method.invokenative(native method)  @ java.lang.reflect.method.invoke(method.java:521)  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:860)  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:618)  @ dalvik.system.nativestart.main(native method) 

don't forget wanna see path on map between 2 points...so if u have suggestions url more welcomed!

update:this second fc

thread exiting uncaught exception (group=0x4001b188)  uncaught handler: thread main exiting due uncaught exception  android.content.activitynotfoundexception: no activity found handle intent { act=android.intent.action.view dat= http://maps.google.com?t=k&saddr=48856838,2351068&daddr=48927049,2357270 }    @ android.app.instrumentation.checkstartactivityresult(instrumentation.java:1408) @ android.app.instrumentation.execstartactivity(instrumentation.java:1378) @ android.app.activity.startactivityforresult(activity.java:2749) @ android.app.activity.startactivity(activity.java:2855) @ test.android.screen_database$inittask.onpostexecute(screen_database.java:205) @ test.android.screen_database$inittask.onpostexecute(screen_database.java:1)      @ android.os.asynctask.finish(asynctask.java:417)     @ android.os.asynctask.access$300(asynctask.java:127)    @ android.os.asynctask$internalhandler.handlemessage(asynctask.java:429)  @ android.os.handler.dispatchmessage(handler.java:99)   @ android.os.looper.loop(looper.java:123)  @ android.app.activitythread.main(activitythread.java:4363)   @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:521)  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:860)  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:618)  @ dalvik.system.nativestart.main(native method) 

the array index based on zero. if i size, need call destplace = geopointsarray.get(i - 1);. , source should 0 , not 1.

protected void onpostexecute(list<geopoint> geopointsarray) {     int = geopointsarray.size();     srcplace = geopointsarray.get(0);     destplace = geopointsarray.get(i - 1);     intent intent = new intent(android.content.intent.action_view,             uri.parse(" http://maps.google.com?t=k&saddr=" + srcplace                     + "&daddr=" + destplace));     startactivity(intent); }