Fragment loses its state when rotate device twice

I have an activity which displays two fragments: - When activity is created, it displays `Fragment1`. - When the user presses the button on `Fragment1`, it displays `Fragment2`, adding to backstack. Fragments are straightforward. `Fragment1` contains `CheckBox` and `EditText`. `Fragment2` contains simple `TextView`. Also I call `setRetainInstance(true)` in fragment's `onCreate(...)` method. Problem: `Fragment1` loses its state if `Fragment2` is displayed and device is rotated twice. However, everything works as expected if device is rotate only once. Steps to reproduce: - Launch application. - Check `CheckBox` and type some text into `EditText` - Press `Button` to launch `Fragment2` - Rotate device - Rotate device once again - Press `Back` button on your device (or `ESC` on Emulator) to return back to `Fragment1` `Fragment1` lost its state (checkbox is unchecked and `EditText` is empty). However, if you return back to `Fragment1` after `step#4` - `Fragment1` keeps its state as expected. Where is the problem? All code is below, including layouts. main.xml: ``` <?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/placeholder" android:layout_width="match_parent" android:layout_height="match_parent" /> ``` fragment1.xml: ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <CheckBox android:id="@+id/checkBox1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="CheckBox" /> <EditText android:id="@+id/editText1" android:layout_width="match_parent" android:layout_height="wrap_content" > </EditText> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Start Fragment2" /> </LinearLayout> ``` fragment2.xml: ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Fragment #2" /> </LinearLayout> ``` FragmentTestActivity.java: ``` package fragmenttest.example.com; import android.app.Activity; import android.app.FragmentManager; import android.os.Bundle; public class FragmentTestActivity extends Activity implements FragmentListener { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); FragmentManager fm = getFragmentManager(); if (fm.findFragmentByTag(Fragment1.TAG) == null) { fm.beginTransaction().replace(R.id.placeholder, new Fragment1(), Fragment1.TAG).commit(); } } @Override public void onButtonClick() { FragmentManager fm = getFragmentManager(); if (fm.findFragmentByTag(Fragment2.TAG) == null) { fm.beginTransaction().replace(R.id.placeholder, new Fragment2(), Fragment2.TAG).addToBackStack(Fragment2.TAG).commit(); } } } ``` Fragment1.java: ``` package fragmenttest.example.com; import android.app.Activity; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; public class Fragment1 extends Fragment { public static final String TAG = Fragment1.class.getName(); private FragmentListener mListener; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setRetainInstance(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View root = inflater.inflate(R.layout.fragment1, container, false); Button button = (Button) root.findViewById(R.id.button1); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { mListener.onButtonClick(); } }); return root; } @Override public void onAttach(Activity activity) { super.onAttach(activity); mListener = (FragmentListener) activity; } } ``` Fragment2.java: ``` package fragmenttest.example.com; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment2 extends Fragment { public static final String TAG = Fragment2.class.getName(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setRetainInstance(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View root = inflater.inflate(R.layout.fragment2, container, false); return root; } } ``` FragmentListener.java: ``` package fragmenttest.example.com; public interface FragmentListener { public void onButtonClick(); } ```