InstantiationException on Orientation Change when DialogFragment is on the top
<p>I have a <code>DialogFragment</code> defined as <strong>inner</strong> class in my <code>Fragment</code> class. On Orientation Change even the following exception is poped up: </p>

<pre><code> Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment my.package.fragments.ImportFragment$FailedImportDialog: make sure class name exists, is public, and has an empty constructor that is public
        at android.app.Fragment.instantiate(Fragment.java:585)
        at android.app.FragmentState.instantiate(Fragment.java:96)
        at android.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1682)
        at android.app.Activity.onCreate(Activity.java:861)
        at my.package.activities.ImportActivity.onCreate(ImportActivity.java:8)
        at android.app.Activity.performCreate(Activity.java:4465)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
        ... 12 more
        Caused by: java.lang.InstantiationException: can't instantiate class my.package.fragments.ImportFragment$FailedImportDialog; no empty constructor
        at java.lang.Class.newInstanceImpl(Native Method)
        at java.lang.Class.newInstance(Class.java:1319)
        at android.app.Fragment.instantiate(Fragment.java:574)
</code></pre>

<p>But I do have public constructor: </p>

<pre><code>class FailedImportDialog extends DialogFragment {

        private EditText edtPassword;
        private Button button;

        public FailedImportDialog() { // Here it is!
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View v = inflater.inflate(R.layout.another_password_dialog, container, false);
            edtPassword = (EditText) v.findViewById(R.id.another_password_dialog_et_password);

            getDialog().setTitle(R.string.failed_to_decrypt);

            Button button = (Button) v.findViewById(R.id.another_password_dialog_btn_ok);
            button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

            });

            return v;

    }
}
</code></pre>

<p>Here is xml: </p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;

&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:orientation="vertical"
              android:padding="10dp"&gt;

    &lt;TextView android:id="@+id/another_password_dialog_tv_text"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text="@string/what_password_did_you_use"&gt;
    &lt;/TextView&gt;

    &lt;EditText android:id="@+id/another_password_dialog_et_password"
              android:layout_height="wrap_content"
              android:layout_width="match_parent"
              android:inputType="textPassword"&gt;
        &lt;requestFocus&gt;
        &lt;/requestFocus&gt;
    &lt;/EditText&gt;

    &lt;Button android:id="@+id/another_password_dialog_btn_ok"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:text="OK"&gt;
    &lt;/Button&gt;

&lt;/LinearLayout&gt;
</code></pre>

<p>Do you guys know why this exception happens? Thank you!</p>

<p><strong>UPDATE:</strong> If I move a class to a separate file there is no such an exception, everything goes smoothly. So the question is - why this exception happens when <code>DialogFragment</code> is an inner class?</p>
