Error when trying to start a MapActivity from another Activity

When I want to start MapActivity from another activity using this code :

Intent i = new Intent(getBaseContext(),RoutingMapActivity.class);
                getApplicationContext().startActivity(i);

I get this error :

09-16 18:47:12.788: ERROR/AndroidRuntime(523): FATAL EXCEPTION: main
09-16 18:47:12.788: ERROR/AndroidRuntime(523): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity  context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.app.ContextImpl.startActivity(ContextImpl.java:618)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.content.ContextWrapper.startActivity(ContextWrapper.java:258)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at com.android.uis.RoutActivity$1.onItemClick(RoutActivity.java:24)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.widget.AdapterView.performItemClick(AdapterView.java:284)
09-16开发者_开发知识库 18:47:12.788: ERROR/AndroidRuntime(523):     at android.widget.ListView.performItemClick(ListView.java:3513)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.widget.AbsListView$PerformClick.run(AbsListView.java:1800)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.os.Handler.handleCallback(Handler.java:587)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.os.Handler.dispatchMessage(Handler.java:92)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.os.Looper.loop(Looper.java:123)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at android.app.ActivityThread.main(ActivityThread.java:3647)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at java.lang.reflect.Method.invokeNative(Native Method)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at java.lang.reflect.Method.invoke(Method.java:507)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
09-16 18:47:12.788: ERROR/AndroidRuntime(523):     at dalvik.system.NativeStart.main(Native Method)

i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); this solved the problem

If you are starting MapActivity from an Activity, why use the application Context? Just call Activity's method startActivity(i).

That's basically what you can read in the exception message in the trace.