How to open an actitivity from a java fragment

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How to open an activity after clicking on a Listview that is in Fragment, I am using: 

 public void onActivityCreated(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onActivityCreated(savedInstanceState);

        OnItemClickListener listener = new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {

                Intent intent = new Intent(getActivity(), NovaActivity.class);
                  startActivity(intent);
            }
        };

        getListView().setOnItemClickListener(listener);

    }

but the application stops after clicking. Please if anyone knows how to solve this I appreciate it.

LogCat: 

07-01 16:06:32.979: V/21st Polling:(408): clicked
07-01 16:06:36.489: V/21st Polling:(408): clicked
07-01 16:06:39.789: D/AndroidRuntime(408): Shutting down VM
07-01 16:06:39.789: W/dalvikvm(408): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
07-01 16:06:39.849: E/AndroidRuntime(408): FATAL EXCEPTION: main
07-01 16:06:39.849: E/AndroidRuntime(408): java.lang.RuntimeException: Unable to pause activity {com.example.appsherlok/com.example.appsherlok.MainActivity}: java.lang.NullPointerException
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3348)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3305)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3288)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread.access$2500(ActivityThread.java:125)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2040)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.os.Looper.loop(Looper.java:123)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread.main(ActivityThread.java:4627)
07-01 16:06:39.849: E/AndroidRuntime(408):  at java.lang.reflect.Method.invokeNative(Native Method)
07-01 16:06:39.849: E/AndroidRuntime(408):  at java.lang.reflect.Method.invoke(Method.java:521)
07-01 16:06:39.849: E/AndroidRuntime(408):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-01 16:06:39.849: E/AndroidRuntime(408):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-01 16:06:39.849: E/AndroidRuntime(408):  at dalvik.system.NativeStart.main(Native Method)
07-01 16:06:39.849: E/AndroidRuntime(408): Caused by: java.lang.NullPointerException
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.support.v4.app.FragmentManagerImpl.saveFragmentBasicState(FragmentManager.java:1576)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.support.v4.app.FragmentManagerImpl.saveAllState(FragmentManager.java:1617)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.support.v4.app.FragmentActivity.onSaveInstanceState(FragmentActivity.java:481)
07-01 16:06:39.849: E/AndroidRuntime(408):  at com.actionbarsherlock.app.SherlockFragmentActivity.onSaveInstanceState(SherlockFragmentActivity.java:126)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.Activity.performSaveInstanceState(Activity.java:1036)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:1180)
07-01 16:06:39.849: E/AndroidRuntime(408):  at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3330)
07-01 16:06:39.849: E/AndroidRuntime(408):  ... 12 more

Friends, a detail! the app has 3 tabs, that listview is in the first. When I open the app it presents the list, I click, and it works right. But when I go to another tab and go back to the list, I click and the error happens.

    
asked by anonymous 01.07.2014 / 01:08

1 answer

1

If your ListView has an adapter, put the event in the custom view (row).

But exemplifying your situation ...

Create the event within OnCreateView() same.

Consider implementing this function: 

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {



}
    
01.07.2014 / 13:28
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