android - java.lang.IllegalStateException: The specified child already has a parent

Question

I am using fragments, when I instantiate a fragment the first time it it. but the second time I got this exception. I couldn't find the line where I got the error?

 04-04 08:51:54.320: E/AndroidRuntime(29713): FATAL EXCEPTION: main
    04-04 08:51:54.320: E/AndroidRuntime(29713): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.view.ViewGroup.addViewInner(ViewGroup.java:3013)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.view.ViewGroup.addView(ViewGroup.java:2902)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.view.ViewGroup.addView(ViewGroup.java:2859)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.view.ViewGroup.addView(ViewGroup.java:2839)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.support.v4.app.NoSaveStateFrameLayout.wrap(Unknown Source)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.support.v4.app.BackStackRecord.run(Unknown Source)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.support.v4.app.FragmentManagerImpl.execPendingActions(Unknown Source)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.support.v4.app.FragmentManagerImpl$1.run(Unknown Source)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.os.Handler.handleCallback(Handler.java:587)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.os.Handler.dispatchMessage(Handler.java:92)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.os.Looper.loop(Looper.java:132)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at android.app.ActivityThread.main(ActivityThread.java:4126)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at java.lang.reflect.Method.invokeNative(Native Method)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at java.lang.reflect.Method.invoke(Method.java:491)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
    04-04 08:51:54.320: E/AndroidRuntime(29713):    at dalvik.system.NativeStart.main(Native Method)

Here are what i do when i click on an element of my list fragment.

// If we are not currently showing a fragment for the new
 // position, we need to create and install a new one.
 RouteSearchFragment df = RouteSearchFragment.newInstance(index);

 // Execute a transaction, replacing any existing fragment
 // with this one inside the frame.
 FragmentTransaction ft = fragmentManager.beginTransaction();
 ft.replace(R.id.details_full, df);
 ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
 ft.commit();

The first time it is Ok, I click element2 from list, it's also ok; but when I return to element1 I got this bug.

Thanks every one!

Answer 1

Sorry to post to an old question but I was able to fix it using a totally different solution. I was getting this exception but I changed the first line of my onCreatView override from this:

View result = inflater.inflate(R.layout.customer_layout, container);

...to this:

View result = inflater.inflate(R.layout.customer_layout, container, false);

I have no idea why but using the override that accepts the boolean as the third param fixed it. I think it tells the Fragment and/or Activity not to use the "container" as the parent of the newly-created View.