Develop Reference

Tabs and Pager with custom ListView

I could manage to create a TabAdapter with pager (swiping tabs), which implements a ListFragment for each. Then I called my items through the strings. This works just fine.
But the ListView here implements plain text.
My question: how can implement a custom ListView with custom Rows (Text and image)?
Here is my code:
.MainActivity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
pager = new ViewPager(this);
pager.setId(R.id.pager);
setContentView(pager);
final ActionBar bar = getActionBar();
bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mTabsAdapter = new TabsAdapter(this, pager);
mTabsAdapter.addTab(bar.newTab().setText("Grundlagen"), ListViewTabGrundlagen.class, null);
mTabsAdapter.addTab(bar.newTab().setText("Anästhesie"), ListViewTabAnaesthesie.class, null);
}
ListViewTabGrundlagen
public class ListViewTabGrundlagen extends ListFragment {
String[] list_items;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
View rootView = inflater.inflate(R.layout.list, container, false);
list_items = getResources().getStringArray(R.array.listGrundlagen);
setListAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, list_items));
return rootView;
}
}
list.xml
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/pager" />
</RelativeLayout>
Any workaround?
Thank you very much!

You need to look for the custom adapters, You can start by extending the BaseAdaper or ArrayAdapter and Overriding the proper methods in the classes.

Unexpected namespace prefix "xmlns" found for tag fragment

I'm getting an error:
Unexpected namespace prefix "xmlns" found for tag fragment
for lines
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
in
<?xml version="1.0" encoding="utf-8"?>
<TabHost android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#android:id/tabhost"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<TabWidget
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#android:id/tabs"
/>
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#android:id/tabcontent"
>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/item_list"
android:name="com.example.storeitemfinder.ItemListFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
tools:context=".ItemListActivity"
tools:layout="#android:layout/list_content" />
</FrameLayout>
</TabHost>
Does anyone know what's wrong?

Remove this
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
for fragment in xml
http://developer.android.com/guide/topics/resources/layout-resource.html
The root element can be either a ViewGroup, a View, or a element, but there must be only one root element and it must contain the xmlns:android attribute with the android namespace as shown.
To make sure i just went through the below posts that are similar
Unexpected namespace prefix "xmlns" for tag fragment
Unexpected namespace prefix "xmlns" found for tag LinearLayout
Unexpected namespace prefix "xmlns" found for tag ListView
Edit:
From the link you posted in your comment it looks like you are looking for is tabs with fragments. So try the below and modify according to your requirements.
Example :
I have set min sdk is 11
MainActivity.java
public class MainActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
Tab tabA = actionBar.newTab();
tabA.setText("Tab A");
tabA.setTabListener(new TabListener<MyFragmentA>(this, "Tag A", MyFragmentA.class));
actionBar.addTab(tabA);
Tab tabB = actionBar.newTab();
tabB.setText("Tab B");
tabB.setTabListener(new TabListener<MyFragmentB>(this, "Tag B", MyFragmentB.class));
actionBar.addTab(tabB);
Tab tabC = actionBar.newTab();
tabC.setText("Tab C");
tabC.setTabListener(new TabListener<MyFragmentC>(this, "Tag C", MyFragmentC.class));
actionBar.addTab(tabC);
if (savedInstanceState != null) {
int savedIndex = savedInstanceState.getInt("SAVED_INDEX");
getActionBar().setSelectedNavigationItem(savedIndex);
}
}
#Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
outState.putInt("SAVED_INDEX", getActionBar().getSelectedNavigationIndex());
}
public static class TabListener<T extends Fragment>
implements ActionBar.TabListener{
private final Activity myActivity;
private final String myTag;
private final Class<T> myClass;
public TabListener(Activity activity, String tag, Class<T> cls) {
myActivity = activity;
myTag = tag;
myClass = cls;
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
Fragment myFragment = myActivity.getFragmentManager().findFragmentByTag(myTag);
// Check if the fragment is already initialized
if (myFragment == null) {
// If not, instantiate and add it to the activity
myFragment = Fragment.instantiate(myActivity, myClass.getName());
ft.add(android.R.id.content, myFragment, myTag);
} else {
// If it exists, simply attach it in order to show it
ft.attach(myFragment);
}
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
Fragment myFragment = myActivity.getFragmentManager().findFragmentByTag(myTag);
if (myFragment != null) {
// Detach the fragment, because another one is being attached
ft.detach(myFragment);
}
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
}
}
Framgent A
public class MyFragmentA extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View myFragmentView = inflater.inflate(R.layout.fragment_a, container, false);
return myFragmentView;
}
}
Fragment B
public class MyFragmentB extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View myFragmentView = inflater.inflate(R.layout.fragment_b, container, false);
return myFragmentView;
}
}
Fragment C
public class MyFragmentC extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View myFragmentView = inflater.inflate(R.layout.fragment_c, container, false);
return myFragmentView;
}
}
fragment A
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="It's Fragment A" />
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/ic_launcher"/>
</LinearLayout>
fragment b xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="It's Fragment B" />
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="center"
android:src="#drawable/ic_launcher"/>
</LinearLayout>
fragment c xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="It's Fragment C" />
</LinearLayout>
Snap shot

In you tabhost layout file, change the parent TabHost Tag code as below
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#android:id/tabhost"
>
xmlns declarations have to be first and then it has to be used. as far as I am concern defining xmlns second time in the layout file doesn't affect or create error but I hope you are facing problem due to wrong declaration

You need an xmlns= schema attribute on the document element, and probably an xmlns:xsi attribute as well, for example:
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
[This is from a web.xml, the xmlns here doesn't apply to your namespace.]

This may or may not be applicable to your specific problem. I ran into the same issue.
Eclipse at times can be rather fussy.
What I did was:
Backed up the original file. Then did a copy paste back into the code that was causing the error.
Recompiled and the error was gone.

Fragments inside a fragment Android application

I'm trying to put 2 fragments inside a fragment. I found some code on internet but, as far as I could go, I don't succeed to put 2 fragments in 1 fragment.
I have seen tips dealing with FragmentManager and especially the method getChildFragmentManager() but I don't know how it works with 2 fragments.
For the story, I'm using an activity with ActionBar which creates 3 fragments. In one of them, I need to handle a graph and a kind of menu to change the graph scale. In this way, I need 2 fragments in one fragment.
Here is the code :
The fragment which handles the others:
public class GraphDisplayFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View myFragmentView = inflater.inflate(R.layout.graph_fragment, container, false);
return myFragmentView;
}
}
The code to draw the graph:
public class GraphFragment extends Fragment {
private static final int SERIES_NR = 1;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
GraphicalView myFragmentView = ChartFactory.getTimeChartView(this.getActivity(), getDateDemoDataset(), getDemoRenderer(),null);
return myFragmentView;
}
//some functions to set graph propreties
}
The XML files :
graph_fragment.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" >
<fragment
android:id="#+id/graph_fragment"
android:name="com.test.GraphFragment"
android:layout_width="match_parent"
android:layout_height="259dp" >
</fragment>
<fragment
android:name="com.test.GraphDetailFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/graph_detail_fragment">
</fragment>
</LinearLayout>
graph_detail.xml with a test implementation
<?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="211dp"
android:layout_height="wrap_content"
android:text="TextView" />
</LinearLayout>
The weird thing is, it works at the begining when I switch between fragments in the ActionBar but after 3-4 moves, I get this error :
android.view.InflateException: Binary XML file line #7: Error inflating class fragment
If anyone has the solution, it would be awesome!

So first off change your xml for graph_fragment.xml to this
<?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" >
<FrameLayout
android:id="#+id/graph_fragment_holder"
android:layout_width="match_parent"
android:layout_height="259dp" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/graph_detail_fragment_holder">
</FrameLayout>
</LinearLayout>
Then in code to inflate them from the fragment use something like this
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.graph_fragment,
container, false);
FirstChildFragment frag1 = (FirstChildFragment) getChildFragmentManager()
.findFragmentById(R.id.first_frag_layout);
SecondChildFragment frag1 = (SecondChildFragment) getChildFragmentManager()
.findFragmentById(R.id.second_frag_layout);
if (null == frag1) {
FirstChildFragment = new frag1();
FragmentTransaction transaction = getChildFragmentManager()
.beginTransaction();
transaction.add(R.id.graph_fragment_holder, frag1)
.addToBackStack(null).commit();
}
if (null == frag2) {
SecondChildFragment = new frag2();
FragmentTransaction transaction = getChildFragmentManager()
.beginTransaction();
transaction.add(R.id.graph_detail_fragment_holder, frag2)
.addToBackStack(null).commit();
}
return rootView;
}

MyFragment myFragment = (MyFragment)getChildFragmentManager().findFragmentById(R.id.my_fragment);

You can try to use the method *findFragmentById(fragment_id)* from SupportFragmentManager to get the instance of fragment from your .xml file and insert your fragment there.
Something like:
Fragment myFragment = getSupportFragmentManager().findFragmentById(R.id.myFragmentId);
I hope to help you.
Best regards.
Adriano

Android FragmentTabHost : No tab known for tag null

I used below code and it is not render graphical layout. display error as Exception raised during rendering: No tab known for tag null.
how can i solve this ?
<android.support.v4.app.FragmentTabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:orientation="horizontal" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
<FrameLayout
android:id="#+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
</android.support.v4.app.FragmentTabHost>

This is the code that I've used to initialise the TabHost and it works fine:
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTabHost;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class DetailFragment extends Fragment {
/**
* Mandatory empty constructor for the fragment manager to instantiate the fragment (e.g. upon screen orientation changes).
*/
public DetailFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// R.layout.fragment_tabs_pager contains the layout as specified in your question
View rootView = inflater.inflate(R.layout.fragment_tabs_pager, container, false);
// Initialise the tab-host
FragmentTabHost mTabHost = (FragmentTabHost) rootView.findViewById(R.id.tabhost);
mTabHost.setup(getActivity(), getChildFragmentManager(), R.id.realtabcontent);
// Initialise this list somewhere with the content that should be displayed
List<String> itemsToBeDisplayed;
for (String subItem : itemsToBeDisplayed) {
// Give along the name - you can use this to hand over an ID for example
Bundle b = new Bundle();
b.putString("TAB_ITEM_NAME", subItem);
// Add a tab to the tabHost
mTabHost.addTab(mTabHost.newTabSpec(subItem).setIndicator(subItem), YourContentFragment.class, b);
}
return rootView;
}
}
/**
* This class contains the actual content of a single tab
*/
public class YourContentFragment extends Fragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle extras = getArguments();
if (extras != null) {
if (extras.containsKey("TAB_ITEM_NAME")) {
String subItem = extras.getString("TAB_ITEM_NAME");
// Do something with that string
}
}
}
}

It seems there is a bug in android support library.
I finally found this workaround:
Changed layout file as this one:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:orientation="horizontal" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
</LinearLayout>
Then i created by code FragmentTabHost as this example:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
tabHost = new FragmentTabHost(getActivity());
inflater.inflate(R.layout.logs_view, tabHost);
tabHost.setup(getActivity(), getChildFragmentManager(), android.R.id.tabcontent);
tabHost.addTab(tabHost.newTabSpec("simple").setIndicator("Simple"), ActivityLogFragment.class, null);
tabHost.addTab(tabHost.newTabSpec("contacts").setIndicator("Contacts"), MiniStatementFragment.class, null);
return tabHost;
}

I met this problem, researched, but could not found any working solution. But I notice that when I add a tab right after 'FragmentTabHost#setup', this problem does not occur, but for example, when I add a tab in 'AsyncTask#onPostExecute', this problem occurs. This seems stupid, but I tried, it is.. Based on those, I found a solution:
Adding an empty tab right after 'FragmentTabHost#setup', and then adding other tabs anywhere, I tried this solution, it works! I will the layout and partial codes below:
<android.support.v4.app.FragmentTabHost
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0"/>
<FrameLayout
android:id="#+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:orientation="horizontal"/>
</LinearLayout>
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
TabHost.TabSpec tabSpec = mTabHost.newTabSpec("TAB_FIRST").setIndicator("First");
mTabHost.addTab(tabSpec, FirstFragment.class, null);
TabWidget tabWidget = mTabHost.getTabWidget();
if (tabWidget != null) {
View tabWidgetChild = tabWidget.getChildAt(0);
if (tabWidgetChild != null) {
tabWidgetChild.setVisibility(View.GONE);
}
}
}

I got a similar problem on using tabHost in fragments, searched a lot and finally found a solution to that.
1) Keep you code in on create view
2) This is the key -> While inflating the layout for tab indicators use as follows
View tabIndicator = LayoutInflater.from(getActivity()).inflate(R.layout.tab_indicator, mTabHost.getTabWidget(), false);
We need to set the parent value in the inflater as mTabHost.getTabWidget()
Setting tab indicator using the above code solved the issue of
Java : illegal state exception : no tab know for tag null
Update :
mTabHost = (FragmentTabHost) view.findViewById(android.R.id.tabhost);
mTabHost.setup(getActivity(), getChildFragmentManager(), R.id.realtabcontent);
View tabIndicatorToday = LayoutInflater.from(getActivity()).inflate(R.layout.tab_indicator, mTabHost.getTabWidget(), false);
((TextView) tabIndicatorToday.findViewById(R.id.tv_tab_txt)).setText(getResources().getString(R.string.text));
mTabHost.addTab(mTabHost.newTabSpec(getResources().getString(R.string.text)).setIndicator(tabIndicatorToday), Fragment.class, null);

This problem occurs when you try to setup your FragmentTabHost in onViewCreated, which is too late.
Try to setup it in onCreateView, and add at least one tab before returning the view object.

My develop environment is Android Studio 0.8.9 with API19 SDK.
If I put the FragmentTabHost in a FragmentActivity, it works.
When I put the FragmentTabHost in a Fragment, it gets "no tab known for tag null" when render and get runtime error when LayoutInflater inflate the layout.
Thank for user3216049's answer, it's a good workaround.
Sorry, I cannot vote since I am a newbie. :(
However it display nothing in my test tab fragments.
I did a small modification.
test_fragment.xml
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
<FrameLayout
android:id="#+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:orientation="horizontal" />
</LinearLayout>
fragment_section_dummy.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="24sp"
android:padding="32dp" />
Java code
The point is that I change the id to the "R.id.realtabcontent" in FragmentTabHost.setup()
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTabHost;
public class TestFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
FragmentTabHost tabHost = new FragmentTabHost(getActivity());
inflater.inflate(R.layout.test_fragment, tabHost);
tabHost.setup(getActivity(),
getChildFragmentManager(), R.id.realtabcontent);
tabHost.addTab(tabHost.newTabSpec("simple")
.setIndicator("Simple"), DummySectionFragment.class, null);
tabHost.addTab(tabHost.newTabSpec("contacts")
.setIndicator("Contacts"), DummySectionFragment.class, null);
return tabHost;
}
/**
* A dummy fragment representing a section of the app,
* but that simply displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
private static int count = 0;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_section_dummy,
container, false);
((TextView) rootView.findViewById(android.R.id.text1))
.setText("Dummy Section " + count++);
return rootView;
}
}
}

i solve my problem by refering this link
FragmentTabHost - No tab known for tag null
No tab known for tag null its Means tabhost is not initialized yet becouse you are trrying in onCreateView method which is too late
call tabhost in onResume method

Framelayout in Fragment Tab

I'm trying to get a frame layout in my app. I have two tabs, each tab is a fragment.
In one tab (listview) I want that two Seekbars appear when a button on the action bar is pressed.I know that I have to use Framelayout but not how to apply it? Please give me some hints how to get this done
Thanks

I think may be you can reference my sample follow ,it use android.support.v4 library.
At first, write a layout file for your activity like this :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<android.support.v4.app.FragmentTabHost
android:id="#+id/frag_tabhost"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="#+id/content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</LinearLayout>
then in your MainActivity code, you can do like this :
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_main);
initializeTabHost();
}
/**
* 初始化TabHost
*/
private void initializeTabHost() {
tabHost.setup(this, getSupportFragmentManager(), R.id.content_layout);
TabSpec tabSound = tabHost.newTabSpec(TAB_SOUND).setIndicator(
getString(R.string.settings_sound));
TabSpec tabAdvanced = tabHost.newTabSpec(TAB_ADVANCED).setIndicator(
getString(R.string.settings_advanced));
TabSpec tabLocal = tabHost.newTabSpec(TAB_LOCAL).setIndicator(
getString(R.string.settings_local));
tabHost.addTab(tabSound, SoundFragment.class, null);
tabHost.addTab(tabAdvanced, AdvancedFragment.class, null);
tabHost.addTab(tabLocal, LocalFragment.class, null);
}
and make this class extends FragmentActivity.
then write a class extends Fragment, override the onCreateView method :
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_list, container, false);
return view;
}
Hope it can help you.