Android Fragment Interface Unresponsive - android-layout

Question

I am having a strange issue with my program that I cannot explain and I have thus far not been able to find a solution. I have a simple activity that will switch between fragments and run the user through an initial setup of the app. The first fragment is just a text view at the top, with a button on the bottom with an onClickListener set to call a method on the parent activity, however in testing, when I click on the button, nothing happens. It does not change color like a normal button would, and no click seems to be registered.
Here is the XML for the layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="#string/setup_intro" />
<Button
android:id="#+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:clickable="true"
android:width="72dp"
android:text="#string/next_button" />
</RelativeLayout>
And this is the fragment code where I implement the onClickListener
public class SetupFragmentInitialScreen extends SherlockFragment
{
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState)
{
View parentView = null;
parentView = inflater.inflate(R.layout.setup_fragment_initial_screen,
container,
false);
Button nextButton = (Button)parentView.findViewById(R.id.next_button);
nextButton.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
Log.v("ButtonPressed", "You Pressed the button!");
((InitialActivity)getActivity()).onInitialScreenNextPress();
}
});
return parentView;
}
}
And lastly, here is my code for my activity so far
public class InitialActivity extends SherlockFragmentActivity
{
private SetupFragmentInitialScreen initialScreen;
private SetupFragmentPreferenceOneScreen preferenceOneScreen;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
initialScreen = new SetupFragmentInitialScreen();
preferenceOneScreen = new SetupFragmentPreferenceOneScreen();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction =
fragmentManager.beginTransaction();
fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,
android.R.anim.fade_out);
fragmentTransaction.replace(android.R.id.content,
initialScreen);
fragmentTransaction.commit();
}
public void onInitialScreenNextPress()
{
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction =
fragmentManager.beginTransaction();
fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,
android.R.anim.fade_out);
fragmentTransaction.replace(android.R.id.content,
preferenceOneScreen);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
}
So far the code to me seems correct, but as I said, there is no reaction from the interface when I try to press the button.
Edit: I have added the following code to my Activity to check for touch events
#Override
public boolean onTouchEvent(MotionEvent event)
{
super.onTouchEvent(event);
Log.v("Touch Detected", "You are touching the screen.");
return false;
}
It logs events all over the screen, except for when I'm touching the button, so the activity is receiving touch events, but the UI itself is not. I also tried loading another interface which has a pair of radio buttons, and they too were unresponsive. Is there something I'm doing wrong with initializing the fragments?

Answer 1

Unfortunately none of the code you posted seems to point to what the issue is.
A button does not need an onClick listener in order to change color when pressed, so I wouldn't worry about that part. More importantly:
Is it possible that any transparent view is lying on top of the button and taking the click? DDMS has a "Dump View Hierarchy for UI Automator" button that may help you check on this.
Does your activity override dispatchTouchEvent(), onInterceptTouchEvent(), or related API's and could one of these be preventing the touch from reaching the button?
If you are applying custom theming to the button, do you have separate visuals for the pressed state?

Answer 2

I figured out what it was. For whatever reason the program didn't like me trying to do the fade out-fade in animation when loading the first fragment into the activity. I removed that line from the onCreate() method and it works fine now.