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 just installed a new template for my blog. The template I chose is Montezuma. That is 100% responsive design and html5. It works fine with desktop and phone too. Moreover, that is very easy to customize.You go -> Apperance - > Montezuma Options, then you can change css and adding the custom elements into the template. That is super easy. I recommend Montezuma to all wordpress users

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:
E.g.

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