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

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!

This solution can help :

public class FragmentItem extends Android.Support.V4.App.Fragment
{
    View rootView;
    TextView textView;

    public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if (rootView != null) 
        {
            ViewGroup parent = (ViewGroup)rootView.Parent;
            parent.RemoveView(rootView);
        } else {
            rootView = inflater.Inflate(Resource.Layout.FragmentItem, container, false);
            textView = rootView.FindViewById<TextView>(Resource.Id.textViewDisplay);            
        }
        return rootView;
    }
}

I solved it by setting attachToRoot of inflater.inflate() to false.

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_overview, container, false);
    return view;
}

I had this code in a fragment and it was crashing if I try to come back to this fragment

if (mRootView == null) {
    mRootView = inflater.inflate(R.layout.fragment_main, container, false);
} 

after gathering the answers on this thread, I realised that mRootView's parent still have mRootView as child. So, this was my fix.

if (mRootView == null) {
    mRootView = inflater.inflate(R.layout.fragment_main, container, false);
} else {
    ((ViewGroup) mRootView.getParent()).removeView(mRootView);
}

hope this helps

You are adding a View into a layout, but the View already is in another layout. A View can't be in more than one place.

I had this problem and couldn't solve it in Java code. The problem was with my xml.

I was trying to add a textView to a container, but had wrapped the textView inside a LinearLayout.

This was the original xml file:

<?xml version="1.0" encoding="utf-8"?>_x000D_
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"_x000D_
    android:orientation="vertical"_x000D_
    android:layout_width="match_parent"_x000D_
    android:layout_height="match_parent">_x000D_
    _x000D_
    <TextView xmlns:android="http://schemas.android.com/apk/res/android"_x000D_
        android:id="@android:id/text1"_x000D_
        android:layout_width="match_parent"_x000D_
        android:layout_height="wrap_content"_x000D_
        android:textAppearance="?android:attr/textAppearanceListItemSmall"_x000D_
        android:gravity="center_vertical"_x000D_
        android:paddingLeft="16dp"_x000D_
        android:paddingRight="16dp"_x000D_
        android:textColor="#fff"_x000D_
        android:background="?android:attr/activatedBackgroundIndicator"_x000D_
        android:minHeight="?android:attr/listPreferredItemHeightSmall"/>_x000D_
_x000D_
</LinearLayout>

Now with the LinearLayout removed:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"_x000D_
        android:id="@android:id/text1"_x000D_
        android:layout_width="match_parent"_x000D_
        android:layout_height="wrap_content"_x000D_
        android:textAppearance="?android:attr/textAppearanceListItemSmall"_x000D_
        android:gravity="center_vertical"_x000D_
        android:paddingLeft="16dp"_x000D_
        android:paddingRight="16dp"_x000D_
        android:textColor="#fff"_x000D_
        android:background="?android:attr/activatedBackgroundIndicator"_x000D_
        android:minHeight="?android:attr/listPreferredItemHeightSmall"/>

This didn't seem like much to me but it did the trick, and I didn't change my Java code at all. It was all in the xml.

It also happens when the view returned by onCreateView() isn't the view that was inflated.

Example:

View rootView = inflater.inflate(R.layout.my_fragment, container, false);

TextView textView = (TextView) rootView.findViewById(R.id.text_view);
textView.setText("Some text.");

return textView;

Fix:

return rootView;

Instead of:

return textView; // or whatever you returned

in your xml file you should set layout_width and layout_height from wrap_content to match_parent. it's fixed for me.

<FrameLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

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.

I have facing this issue many time. Please add following code for resolve this issue :

@Override
    public void onDestroyView() {
        super.onDestroyView();
        if (view != null) {
            ViewGroup parentViewGroup = (ViewGroup) view.getParent();
            if (parentViewGroup != null) {
                parentViewGroup.removeAllViews();
            }
        }
    }

Thanks

If you have this statement..

View view = inflater.inflate(R.layout.fragment1, container);//may be Incorrect 

Then try this.. Add false as third argument.. May be it could help..

View view = inflater.inflate(R.layout.fragment1, container, false);//correct one