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)

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

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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.