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POHow to provide support for Fragments and ActionBar for App which supports Android 2.2+ devices?
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copied!<p>I have visited so many similar links like this i.e <a href="https://stackoverflow.com/questions/6528691/fragments-in-android-2-2-1-2-3-2-0-is-this-possible">1</a>, <a href="https://stackoverflow.com/questions/7176841/android-fragment-api-for-api-level-11">2</a> followed various examples / links i.e. <a href="http://mobile.tutsplus.com/tutorials/android/android-sdk_fragments/" rel="nofollow noreferrer">this one</a> and <a href="http://mobile.tutsplus.com/tutorials/android/android-compatibility-working-with-fragments/" rel="nofollow noreferrer">this one</a> mainly I have followed this post from <a href="http://www.vogella.com/articles/Android/article.html#fragments_tutorial" rel="nofollow noreferrer">Vogella</a> that too multiple times, Every time I get same exception.... What could be the reason ?</p> <pre><code>07-27 12:00:33.431: E/AndroidRuntime(663): FATAL EXCEPTION: main 07-27 12:00:33.431: E/AndroidRuntime(663): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myexample.fragmentdemoexample/com.myexample.fragmentsupportexample.MainFragmentActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.ActivityThread.access$600(ActivityThread.java:123) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.os.Handler.dispatchMessage(Handler.java:99) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.os.Looper.loop(Looper.java:137) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.ActivityThread.main(ActivityThread.java:4424) 07-27 12:00:33.431: E/AndroidRuntime(663): at java.lang.reflect.Method.invokeNative(Native Method) 07-27 12:00:33.431: E/AndroidRuntime(663): at java.lang.reflect.Method.invoke(Method.java:511) 07-27 12:00:33.431: E/AndroidRuntime(663): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 07-27 12:00:33.431: E/AndroidRuntime(663): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 07-27 12:00:33.431: E/AndroidRuntime(663): at dalvik.system.NativeStart.main(Native Method) 07-27 12:00:33.431: E/AndroidRuntime(663): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment 07-27 12:00:33.431: E/AndroidRuntime(663): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 07-27 12:00:33.431: E/AndroidRuntime(663): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.Activity.setContentView(Activity.java:1835) 07-27 12:00:33.431: E/AndroidRuntime(663): at com.myexample.fragmentsupportexample.MainFragmentActivity.onCreate(MainFragmentActivity.java:14) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.Activity.performCreate(Activity.java:4465) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 07-27 12:00:33.431: E/AndroidRuntime(663): ... 11 more 07-27 12:00:33.431: E/AndroidRuntime(663): Caused by: java.lang.ClassCastException: com.myexample.fragmentdemoexample.MyListFragment cannot be cast to android.support.v4.app.Fragment 07-27 12:00:33.431: E/AndroidRuntime(663): at android.support.v4.app.Fragment.instantiate(Fragment.java:388) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.support.v4.app.Fragment.instantiate(Fragment.java:363) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:264) 07-27 12:00:33.431: E/AndroidRuntime(663): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669) 07-27 12:00:33.431: E/AndroidRuntime(663): ... 21 more </code></pre> <p><strong>EDIT</strong> Here is my full code //MainActivity</p> <pre><code>public class MainFragmentActivity extends FragmentActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main_fragment); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main_fragment, menu); return true; } } </code></pre> <p>//DetailActivity</p> <pre><code>public class DetailActivity extends FragmentActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Need to check if Activity has been switched to landscape mode // If yes, finished and go back to the s tart Activity if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) { finish(); return; } setContentView(R.layout.details_activity_layout); Bundle extras = getIntent().getExtras(); if (extras != null) { String s = extras.getString("value"); TextView view = (TextView) findViewById(R.id.detailsText); view.setText(s); } } } </code></pre> <p>//MyListFragment</p> <pre><code>public class MyListFragment extends ListFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); String[] values = new String[] { "Android", "iPhone", "WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2" }; ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, values); setListAdapter(adapter); } @Override public void onListItemClick(ListView l, View v, int position, long id) { String item = (String) getListAdapter().getItem(position); DetailFragment fragment = (DetailFragment) (getActivity().getSupportFragmentManager()).findFragmentById(R.id.detailFragment); if (fragment != null && fragment.isInLayout()) { fragment.setText(item); } else { Intent intent = new Intent(getActivity().getApplicationContext(), DetailActivity.class); intent.putExtra("value", item); startActivity(intent); } } } </code></pre> <p>//DetailsFragment</p> <pre><code>public class DetailFragment extends Fragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.e("Test", "hello"); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.details, container, false); return view; } public void setText(String item) { TextView view = (TextView) getView().findViewById(R.id.detailsText); view.setText(item); } } </code></pre> <p>//Layouts are //activity_main.xml</p> <pre><code><?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="horizontal" > <fragment android:id="@+id/listFragment" android:layout_width="150dip" android:layout_height="match_parent" android:layout_marginTop="?android:attr/actionBarSize" class="com.myexample.fragmentdemoexample.MyListFragment" > </fragment> <fragment android:id="@+id/detailFragment" android:layout_width="match_parent" android:layout_height="match_parent" class="com.myexample.fragmentdemoexample.DetailFragment" >  </fragment> </LinearLayout> </code></pre> <p>//details.xml</p> <pre><code><?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/detailsText" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_gravity="center_horizontal|center_vertical" android:layout_marginTop="20dip" android:text="Large Text" android:textAppearance="?android:attr/textAppearanceLarge" android:textSize="30dip" /> </LinearLayout> </code></pre> <p>and code for layout-port is similar to as mentioned on Vogella's post with appropriate changes</p>

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