public abstract void onItemClick (AdapterView<?> parent, View view, int position, long id) in AdapterView
Last parameter calls id, but that will be row id, not the data object id in item.
You should use position and getItemAtPosition to get the data object in item you clicked. Then you can access id.
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In Fragment sub class in Android, you cannot directly use findViewById() to retrieve the control from view , similar with Activity. You need to do a single small step, this.getView(); Note that, to use this method, the view need to created, such as in onOptionsItemSelected

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I spent three days about this problem. The Navigation Drawer will show if I swipe the screen from left to right. But that won't show by clicking the app icon. Actually, I missed these lines of codes:

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if (mDrawerToggle.onOptionsItemSelected(item)) { will call to show the drawer!

I added Google Play Ads Service. However, I got this error: "No GMSG handler found for GMSG". No ads is displayed at all. I found the reason, that is because my app has not put in the play store. So, I have to add the my emulator as a test device.
Like this:

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I used foreach keyword in C#. I used it to travel element one by one in a list. In Java, there is not such keyword calls foreach. But you can use for to do that:
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