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Android RecyclerView Adapter in a fragment not working

I am trying to use a androidx.recyclerview.widget.RecyclerView inside a Fragment and having a tough time trying to add basic items to it via an adapter. Following is my Fragment:
public class TimelineFragment extends Fragment {
private DataBoundAdapter timelineAdapter;
private View rootView;
#Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState
) {
// Inflate the layout for this fragment
rootView = inflater.inflate(R.layout.fragment_timeline_home, container, false);
initStuff(container);
return rootView;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
}
public void onViewCreated(#NonNull View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
private void initStuff(ViewGroup container) {
ArrayList<FernPost> list = {...};
timelineAdapter = new DataBoundAdapter(list);
RecyclerView recyclerView = rootView.findViewById(R.id.scroll_timeline);
recyclerView.setLayoutManager(new GridLayoutManager(getContext(),2));
recyclerView.setAdapter(timelineAdapter);
timelineAdapter.notifyDataSetChanged();
}
}
This is the fragment xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="100dp"
android:text="hi there bullshit!!!"/>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/scroll_timeline"
android:scrollbars="vertical"
android:visibility="visible">
</androidx.recyclerview.widget.RecyclerView>
</LinearLayout>
The Main activity layout xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#android:drawable/ic_input_add" />
<fragment
android:id="#+id/timeline_fragment"
android:name="com.blinkfast.fern.TimelineFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
here is the adapter code for the recycler view:
public class DataBoundAdapter extends RecyclerView.Adapter<DataBoundViewHolder> {
private List<FernPost> fernPosts;
public DataBoundAdapter(List<FernPost> fernPosts) {
this.fernPosts = fernPosts;
}
#NonNull
#Override
public DataBoundViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemLayoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.fernpost, null);
return new DataBoundViewHolder(itemLayoutView);
}
#Override
public void onBindViewHolder(#NonNull DataBoundViewHolder holder, int position) {
holder.bind(fernPosts.get(position));
}
#Override
public int getItemCount() {
return fernPosts.size()
}
}
And the view holder:
public class DataBoundViewHolder extends RecyclerView.ViewHolder {
private FernPost post;
private View fernPostView;
public DataBoundViewHolder(#NonNull View itemView) {
super(itemView);
this.fernPostView = itemView;
Log.i(DataBoundViewHolder.class.getName(), "");
}
public void bind(FernPost fernPost){
Log.i(DataBoundViewHolder.class.getName(), "binding");
this.post = fernPost;
}
}
I have spent entire day trying various thing making it work, but nothing has so far. The onCreateViewHolder / onBindViewHolder methods are just not getting called. Not sure what i am doing wrong.

Assuming your fragment (the one holding RecyclerView) is displayed and your list has items before passed to DataBoundAdapter, please use different inflation inside your adapter's onCreateViewHolder:
LayoutInflater.from(parent.getContext()).inflate(viewType, parent, false)

ImageView Slider horizontally

I am trying to create a horizontal slider of images fitted in my imageview in my main layout file. But instead of imageview sliding on touch, the code is moving the whole layout horizontally.
Following is my Java code for sliding:
public class Artprofile extends FragmentActivity {
static final int NUM_ITEMS = 5;
ImageFragmentPagerAdapter imageFragmentPagerAdapter;
ViewPager viewPager;
public static final String[] IMAGE_NAME = {"a", "b", "c", "d", "e",};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_page);
imageFragmentPagerAdapter = new ImageFragmentPagerAdapter(getSupportFragmentManager());
viewPager = (ViewPager) findViewById(R.id.pager);
viewPager.setAdapter(imageFragmentPagerAdapter);
}
public static class ImageFragmentPagerAdapter extends FragmentPagerAdapter {
public ImageFragmentPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public int getCount() {
return NUM_ITEMS;
}
#Override
public Fragment getItem(int position) {
SwipeFragment fragment = new SwipeFragment();
return SwipeFragment.newInstance(position);
}
}
public static class SwipeFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View swipeView = inflater.inflate(R.layout.layoutart, container, false);
ImageView imageView = (ImageView) swipeView.findViewById(R.id.image_view1);
Bundle bundle = getArguments();
int position = bundle.getInt("position");
String imageFileName = IMAGE_NAME[position];
int imgResId = getResources().getIdentifier(imageFileName, "drawable", "com.example.user.myapplication1");
imageView.setImageResource(imgResId);
return swipeView;
}
static SwipeFragment newInstance(int position) {
SwipeFragment swipeFragment = new SwipeFragment();
Bundle bundle = new Bundle();
bundle.putInt("position", position);
swipeFragment.setArguments(bundle);
return swipeFragment;
}
}
}
Following is my main layout file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#drawable/mobileback"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<ImageView android:id="#+id/image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxWidth="150dp"
android:maxHeight="150dp"
android:scaleType="fitCenter"
android:layout_marginRight="50dp"
android:layout_marginTop="30dp"
android:layout_marginLeft="400dp"
android:src="#drawable/profilewindow1"
android:layout_marginEnd="58dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="330dp"
android:layout_alignParentStart="true"
android:maxWidth="150dp"
android:maxHeight="150dp"
android:layout_below="#+id/image_view"
android:id="#+id/layout_mobile1">
<ImageView
android:id="#+id/image_view1"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</FrameLayout>
</RelativeLayout>
And this is the Fragment layout used for sliding:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
I dont understand the problem. Kindly help. Thanks in advance

You can use a layout to wrap imageview and then wrap the layout in horizontal scrollview

Android: NullPointerException when adding an Adapter to a ListView [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 6 years ago.
I am creating a ViewPager in activity_table.xml.
This ViewPager has two pages which both share the same layout: list.xml.
This layout contains a ListView which I am trying to create an Adapter for.
The app compiles correctly but crashes when it tries to add the said Adapter to the ListView with a
NullPointerException when attempting to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference.
I have heard that I have to "load" a layout before I can use the Views it contains, but I how do I do that?
I have tried setContentView(R.layout.list), but it throws the same error...
Table.java
SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
ViewPager viewPager = (ViewPager) findViewById(R.id.container);
viewPager.setAdapter(sectionsPagerAdapter);
String[] tmp = new String[mainTable.length-2];
ListView listView = (ListView)findViewById(R.id.listView);
ListAdapter listAdapter = new ListAdapter(this,R.layout.list_item,tmp);
listView.setAdapter(listAdapter);
public static class TableFragment extends Fragment {
private static final String ARG_SECTION_NUMBER = "section number";
public TableFragment() {
}
public static TableFragment newInstance(int sectionNumber) {
TableFragment fragment = new TableFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER,sectionNumber);
fragment.setArguments(args);
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.list,container,false);
TextView title = (TextView) rootView.findViewById(R.id.title);
if(getArguments().getInt(ARG_SECTION_NUMBER) == 1)
title.setText("Heute");
else if(getArguments().getInt(ARG_SECTION_NUMBER) == 2)
title.setText("Morgen");
return rootView;
}
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
return TableFragment.newInstance(position + 1);
}
#Override
public int getCount() {
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "today";
case 1:
return "tomorrow";
}
return null;
}
}
public class ListAdapter extends ArrayAdapter<String> {
public ListAdapter(Context context, int textViewResourceId) {
super(context,textViewResourceId);
}
public ListAdapter(Context context, int resource, String[] items) {
super(context,resource,items);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if(v == null) {
LayoutInflater vi;
vi = LayoutInflater.from(getContext());
v = vi.inflate(R.layout.list_item, null);
}
String p = getItem(position);
if(p!=null) {
TextView grade = (TextView) v.findViewById(R.id.grade);
TextView hour = (TextView) v.findViewById(R.id.hour);
TextView course = (TextView) v.findViewById(R.id.course);
TextView teacher = (TextView) v.findViewById(R.id.teacher);
TextView room = (TextView) v.findViewById(R.id.room);
TextView description = (TextView) v.findViewById(R.id.description);
try {
grade.setText(tableData[position][1]);
hour.setText(tableData[position][2]);
course.setText(tableData[position][3]);
teacher.setText(tableData[position][4]);
room.setText(tableData[position][5]);
description.setText(tableData[position][6]);
} catch (ArrayIndexOutOfBoundsException e) {
return v;
}
}
return v;
}
}
activity_table.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="de.fuchstim.vertretungsplan.Table">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="#dimen/fab_margin"
android:layout_gravity="bottom|right"
app:srcCompat="#drawable/reload_arrow_white" />
</android.support.design.widget.CoordinatorLayout>
list.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="Heute (25.10.16)"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/title"
android:textAppearance="#android:style/TextAppearance.DeviceDefault.DialogWindowTitle"
android:textAlignment="center" />
<GridLayout android:layout_gravity="start"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/grade"
android:layout_height="wrap_content"
android:text="Klasse"
android:layout_row="0"
android:layout_column="0"
android:layout_width="0dp"
android:textSize="14sp"
android:layout_columnWeight="40"
android:paddingStart="10dp" />
<TextView
android:text="Stunde"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/hour"
android:layout_row="0"
android:layout_column="1"
android:layout_columnWeight="15"/>
<TextView
android:text="Lehrer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/teacher"
android:layout_row="0"
android:layout_column="3"
android:layout_columnWeight="15"/>
<TextView
android:text="Kurs"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/course"
android:layout_row="0"
android:layout_column="2"
android:layout_columnWeight="15"/>
<TextView
android:text="Raum"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="#+id/room"
android:layout_row="0"
android:layout_column="4"
android:layout_columnWeight="15"/>
</GridLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:id="#+id/listView" />
</LinearLayout>

I have tried setContentView(R.layout.list), but it throws the same error...
First, you need to use setContentView(R.layout.activity_table) instead.
Second, you cannot find the ListView from the Activity, since it is contained within the Fragment layout.
See here? Your ListView is in the same layout as this title element, so you need to find the ListView here...
View rootView = inflater.inflate(R.layout.list,container,false);
TextView title = (TextView) rootView.findViewById(R.id.title);
Move that ListView code from the Activity to the Fragment. And use getActivity() for the Adapter within the Fragment instead of this to get the Context.
That is where the #+id/listView value exists. That layout is searched with rootView.findViewById.

Since, you did not get null pointer at this location :
ViewPager viewPager = (ViewPager) findViewById(R.id.container);
viewPager.setAdapter(sectionsPagerAdapter);
So, this means you are using :
setContentView(R.layout.activity_table);
Because viewpager is only in above layout, and since listview is not in this layout xml file, you get null pointer on :
ListView listView = (ListView)findViewById(R.id.listView);
ListAdapter listAdapter = new ListAdapter(this,R.layout.list_item,tmp);
listView.setAdapter(listAdapter);
because listview in null, not present in activity_table xml file.
You need to set adapter in OnCreateView() :
#Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.list,container,false);
TextView title = (TextView) rootView.findViewById(R.id.title);
// Add below ...
String[] tmp = new String[mainTable.length-2];
ListView listView = (ListView)rootView.findViewById(R.id.listView);
ListAdapter listAdapter = new ListAdapter(getActivity(),R.layout.list_item,tmp);
listView.setAdapter(listAdapter);
// ends here ...
if(getArguments().getInt(ARG_SECTION_NUMBER) == 1)
title.setText("Heute");
else if(getArguments().getInt(ARG_SECTION_NUMBER) == 2)
title.setText("Morgen");
return rootView;
}
Hope this helps !

Issue Using ViewPager Indicator with Jake Wharton Library

I have downloaded the library and properly included into my android studio project
I am not able to see Circle indicator even after using library:
Here is my code:
MAIN FILE:
public class MyActivity extends FragmentActivity implements OnPageChangeListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
List<Fragment> list = new ArrayList<Fragment>();
list.add(new MyFragment());
list.add(new MyFragment());
list.add(new MyFragment());
MyPagerAdapter a = new MyPagerAdapter(getSupportFragmentManager(), list);
ViewPager pager = (ViewPager) findViewById(R.id.viewpager);
pager.setAdapter(a);
CirclePageIndicator mIndicator = (CirclePageIndicator)findViewById(R.id.indicator);
mIndicator.setViewPager(pager);
}
MyPagerAdapter.java
public class MyPagerAdapter extends FragmentPagerAdapter {
List<Fragment> fragments;
public MyPagerAdapter(FragmentManager fm,List<Fragment> f) {
super(fm);
this.fragments = f;
}
#Override
public Fragment getItem(int arg0) {
return fragments.get(arg0);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return fragments.size();
}
}
MyFragment:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanse) {
final View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
activity_my.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" >
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.viewpagerindicator.CirclePageIndicator
android:id="#+id/indicator"
android:padding="10dip"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
</android.support.v4.view.ViewPager>
</RelativeLayout>
fragment_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/gallery"
android:src="#drawable/pic1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
Output:

Change the size of a fragment with a button

I'm trying to change the weight of "MapView" and "InfoContent" when i click on a button inside the mapview fragment. The mapView Fragment is defined in the PlaceholderFragment2 Java Class.
The first click should change the weight to a new value, while the second click should restore the old value.
XMl:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".MainActivity"
android:orientation="vertical"
>
<FrameLayout
android:id="#+id/TitleBar"
android:layout_width="fill_parent"
android:layout_height="50dp"
>
</FrameLayout>
<FrameLayout
android:id="#+id/MapView"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1">
</FrameLayout>
<FrameLayout
android:id="#+id/InfoTitleBar"
android:layout_width="fill_parent"
android:layout_height="170dp"
>
</FrameLayout>
<FrameLayout
android:id="#+id/InfoContent"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="0"
>
</FrameLayout></LinearLayout>
MainActivity.Java
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
PlaceholderFragment frg=new PlaceholderFragment();
PlaceholderFragment2 frg2=new PlaceholderFragment2();
PlaceholderFragment3 frg3=new PlaceholderFragment3();
PlaceholderFragment4 frg4=new PlaceholderFragment4();
FragmentManager manager=getFragmentManager();
FragmentTransaction transaction=manager.beginTransaction();
transaction.add(R.id.TitleBar, frg, "Frag_Top_tag");
transaction.add(R.id.MapView, frg2, "Frag_Middle_tag");
transaction.add(R.id.InfoTitleBar, frg3, "Frag_Bottom_tag");
transaction.add(R.id.InfoContent, frg4, "Frag_Content_tag");
transaction.commit();
}
And PlaceHolderFragment2.java
public static class PlaceholderFragment2 extends Fragment {
public PlaceholderFragment2() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.mapview, container,
false);
final Button button =
(Button) rootView.findViewById(R.id.zoomMap);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
buttonClicked(v);
}
});
return rootView;
}

I solved it, I put the fragment in linear layout, then in the main activity I created the object, when I click just change the size of the weight of the linear layout, cos' I do not need nor by the fragment transaction.
MainActivity
private Button button;
private LinearLayout layoutListView;
private LinearLayout.LayoutParams lpListView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_container);
button = (Button) findViewById(R.id.button);
layoutListView = (LinearLayout) findViewById(R.id.listTreeView);
lpListView = new LinearLayout.LayoutParams(0, LayoutParams.MATCH_PARENT);
lpListView.weight = 20;
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if (lpListView.weight == 0) {
lpListView.weight = 20;
} else {
lpListView.weight = 0;
}
layoutListView.setLayoutParams(lpListView);
}
});
}
}
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="100"
android:orientation="horizontal"
android:weightSum="100" >
<LinearLayout
android:id="#+id/listTreeView"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="20"
android:orientation="horizontal" >
<fragment
android:id="#+id/fraglistView"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.example.ListTreeView" />
</LinearLayout>
<LinearLayout
android:id="#+id/fragbutton"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="80"
android:background="#F000" >
<fragment
android:id="#+id/fraglistRight"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.example.ListViewRight" />
</LinearLayout>
</LinearLayout>