I am facing problem with my android app and I cannot find working solution for this particular problem - I am starting to believe that it is not possible to achive what I try to do.
I want to have an app with tabs (DONE!). I want to swipe through those tabs with finger gesture (partialy done) and I want to display different items on those tabs as a ListView (partialy done). The problem is that when I populate ListView with my db data I cannot swipe through tabs any longer. It is like that because I change the content view to one of my fragments.
How can I keep swiping through tabs and populate list view? The other thing is that I want to call different select statement on each of my tabs dynamically - so user can mark something as his favourite and when he'll navigate to "favourites" tab he will find proper content.
Here is my code (I think this are the most important bits):
MainActivity.java
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
TabsPagerAdapter mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
setContentView(R.layout.fragment_main);
myList = (ListView) findViewById(R.id.listViewFromDB);
registerForContextMenu(myList);
openDB();
myDb.populateDataBaseOnStart();
populateListViewFromDB();
registerClickCallback();
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
Here is my ClassFragment.java:
public class FilmyFragment extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_filmy, container, false);
return rootView;
}
}
And Here is layout xml for main activity and fragment class:
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" />
Fragment:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView android:id="#+id/listViewFromDB"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:layout_weight="1"/>
Related
i'm trying to get this pageviewer with fragments to work however i'm stumbled on a problem where the view stays on screen on swipe. Ideally, i'd want it to only be on a particular layout yet i'm not too sure why it "carries over" to other screens (it also stays on screen during the transition between fragments).
Any feedback will be appreciated!
Link to Imgur Screenshots
Main:
private void initUI()
{
// ---------Page Viewer with Fragments -----------
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getSupportActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
}
Adapter:
public class TabsPagerAdapter extends FragmentPagerAdapter {
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int index) {
switch (index) {
case 0:
// Main Frag
return new Fragment1();
case 1:
// Second Frag
return new Fragment2();
case 2:
// Third Frag
return new Fragment3();
}
return null;
}
#Override
public int getCount() {
return 3;
}
}
Fragment classes are basically this:
public class Fragment1 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.main, container, false);
return rootView;
}
}
Main Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
The EditText is in the main layout, the same layout that the ViewPager is in. It should be inflated within the tab. You'll need to create a separate layout for each tab.
Main layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
layout_fragment_1.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
Then you need to inflate the new layout in fragment 1.
View rootView = inflater.inflate(R.layout.layout_fragment_1, container, false);
return rootView;
This is MyTabActivity.java class
public class MyTabActivity extends FragmentActivity {
ViewPager Tab;
TabPagerAdapter TabAdapter;
ActionBar actionBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tab_layout);
TabAdapter = new TabPagerAdapter(getSupportFragmentManager());
Tab = (ViewPager)findViewById(R.id.pager);
Tab.setOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar = getActionBar();
actionBar.setSelectedNavigationItem(position); }
});
Tab.setAdapter(TabAdapter);
actionBar = getActionBar();
//Enable Tabs on Action Bar
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
ActionBar.TabListener tabListener = new ActionBar.TabListener(){
#Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
Toast.makeText(getBaseContext(), "Tab ReSelected: " + tab.getPosition(), Toast.LENGTH_SHORT).show();
}
#Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
Tab.setCurrentItem(tab.getPosition());
Toast.makeText(getBaseContext(), "Tab Selected: " + tab.getPosition(), Toast.LENGTH_SHORT).show();
}
#Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
Toast.makeText(getBaseContext(), "Tab UnSelected: " + tab.getPosition(), Toast.LENGTH_SHORT).show();
}};
//Add New Tab
actionBar.addTab(actionBar.newTab().setText("Tab1").setTabListener(tabListener));
actionBar.addTab(actionBar.newTab().setText("Tab2").setTabListener(tabListener));
}
}
This is TabPagerAdapter.java
public class TabPagerAdapter extends FragmentStatePagerAdapter {
public TabPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int i) {
switch (i) {
case 0:
return new Tab1Activity();
case 1:
return new Tab2Activity();
}
return null;
}
#Override
public int getCount() {
//No of Tabs
return 2;
}
}
public class Tab1Activity extends Fragment {
#Override
public View onCreateView(final LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_main, container, false);
/// code to display LIstView
.
.
//here i m trying to invoke other tab on click of list item...this where i stuck
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adptr, View view, int pos,
long id) {
/// this code here is not working for me
Tab2Activity myDetailFragment = new Tab2Activity ();
Bundle bundle = new Bundle();
bundle.putString("KEY_DETAIL", "Hi");
myDetailFragment.setArguments(bundle);
FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
fragmentTransaction.attach(myDetailFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}});
return monthlyView;
}
}
This is Tab2Activity.java
public class Tab2Activity extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View dailyView = inflater.inflate(R.layout.activity_mian, container, false);
// displaying list item based on the input from tab1
return dailyView;
}
}
This is 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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ListView
android:id="#+id/list_View1"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ListView>
</RelativeLayout>
This is pager.xml
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- The main content view starts -->
<LinearLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
Now my question is, i am displaying a list of item using listview in tab1
and i want to invoke tab2 when user click on the list item of tab1
and display some data on tab2 by sending some data from tab1 to tab2.
I an mew to android, please guide me with proper solutions. Thanks :)
Use viewPager.setCurrentItem(position, true); to switch between tabs.
Then, use this to get the current fragment.
Then you call a public method of that fragment that you create to do whatever you want.
I use swipe action tab I have 3 tabs (tab 1,tab 2,tab 3)
How can I open new activity by clicking the button in fragment android
in tab 1 page there is multiple buttons I want to click for example button 1 to open new page how can I do that?
how can I open new page from fragment ?
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#2e2e2e" >
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="15dp"
android:background="#00b3ff"
android:text="button 1"
android:textColor="#ffffff"
android:textColorHint="#ffffff"
android:textSize="22sp"
android:textStyle="bold" />
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/button1"
android:layout_below="#+id/button1"
android:layout_marginTop="15dp"
android:background="#00b3ff"
android:text="button 2"
android:textColor="#ffffff"
android:textColorHint="#ffffff"
android:textSize="22sp"
android:textStyle="bold"/>
</RelativeLayout>
You can do this:
yourButton.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
Intent intent = new Intent(getActivity(),NextActivity.class);
getActivity().startActivity(intent);
}
});
You just have to do your Intent.
this.getActivity.startActivity(this.getApplicationContext(), ClassName.class);
public class TipsFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_quiz_game2, container, false);
return rootView;
}
}
#SuppressLint("NewApi")
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "About", "Tips", "QuizGame" };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
I have the code here with tabs and It works when you select each tab but I cannot swipe to go to next tab.
Each tab has listview which has its own activity.Only thing I want is to add swipe gesture to go to next tab.How do I do that? I really appreciate any help.Thanks in Advance.
public class AndroidTabAndListView extends TabActivity {
// TabSpec Names
private static final String INBOX_SPEC = "Inbox";
private static final String OUTBOX_SPEC = "Outbox";
private static final String PROFILE_SPEC = "Profile";
ViewPager pager;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
pager = (ViewPager) findViewById(R.id.pager);
TabHost tabHost = getTabHost();
// Inbox Tab
TabSpec inboxSpec = tabHost.newTabSpec(INBOX_SPEC);
// Tab Icon
inboxSpec.setIndicator(INBOX_SPEC, getResources().getDrawable(R.drawable.icon_inbox));
Intent inboxIntent = new Intent(this, InboxActivity.class);
// Tab Content
inboxSpec.setContent(inboxIntent);
// Outbox Tab
TabSpec outboxSpec = tabHost.newTabSpec(OUTBOX_SPEC);
outboxSpec.setIndicator(OUTBOX_SPEC, getResources().getDrawable(R.drawable.icon_outbox));
Intent outboxIntent = new Intent(this, OutboxActivity.class);
outboxSpec.setContent(outboxIntent);
// Profile Tab
TabSpec profileSpec = tabHost.newTabSpec(PROFILE_SPEC);
profileSpec.setIndicator(PROFILE_SPEC, getResources().getDrawable(R.drawable.icon_profile));
Intent profileIntent = new Intent(this, ProfileActivity.class);
profileSpec.setContent(profileIntent);
// Adding all TabSpec to TabHost
tabHost.addTab(inboxSpec); // Adding Inbox tab
tabHost.addTab(outboxSpec); // Adding Outbox tab
tabHost.addTab(profileSpec); // Adding Profile tab
}
}
xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="409dp"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
</LinearLayout>
</TabHost>
Allright I see that you are not using the ViewPager in the xml. Because I have not tried it the way you are doin it, I recommend it will be a lot easier if you do it like the following examples:
Creating Swipe Views with Tabs
Android Tab Layout with Swipeable Views
Still not useful then you can read this
Hope it Helps you. Cheers :)
Use fragments for inner pages.
Create a class that extends FragmentPagerAdapter for tab buttons.
Example :
activity_main.xml
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
AndroidTabAndListView.java
public class AndroidTabAndListView extends FragmentActivity implements ActionBar.TabListener {
TabSpecNames mAppSectionsPagerAdapter;
ViewPager mViewPager;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create the adapter that will return a fragment for each of the three primary sections
// of the app.
mAppSectionsPagerAdapter = new TabSpecNames(getSupportFragmentManager());
// Set up the action bar.
final ActionBar actionBar = getActionBar();
// Specify that the Home/Up button should not be enabled, since there is no hierarchical
// parent.
actionBar.setHomeButtonEnabled(false);
// Specify that we will be displaying tabs in the action bar.
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Set up the ViewPager, attaching the adapter and setting up a listener for when the
// user swipes between sections.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mAppSectionsPagerAdapter);
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// When swiping between different app sections, select the corresponding tab.
// We can also use ActionBar.Tab#select() to do this if we have a reference to the
// Tab.
actionBar.setSelectedNavigationItem(position);
}
});
// For each of the sections in the app, add a tab to the action bar.
for (int i = 0; i < mAppSectionsPagerAdapter.getCount(); i++) {
// Create a tab with text corresponding to the page title defined by the adapter.
// Also specify this Activity object, which implements the TabListener interface, as the
// listener for when this tab is selected.
actionBar.addTab(
actionBar.newTab()
.setText(mAppSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
#Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
#Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
// When the given tab is selected, switch to the corresponding page in the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
public static class TabSpecNames extends FragmentPagerAdapter {
public TabSpecNames(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int i) {
switch (i) {
case 0:
return new InboxFragment();
case 1:
return new OutboxFragment();
case 2:
return new ProfileFragment();
default:
break;
}
return null;
}
#Override
public int getCount() {
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
String sections[] = {"Inbox", "Outbox", "Profile"};
return sections[position];
}
}
}
fragment_inbox.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/tv1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Inbox (99)"/>
</LinearLayout>
InboxFragment.java
public class InboxFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState)
{
View rootView = inflater.inflate(R.layout.fragment_inbox,
container, false);
return rootView;
}
}
I've been trying to create a simple Horizontal scrolling option.
I have 2 ListFragments, which I would like to scroll between.
I'm getting a "Source Not Found" error when returning the View from onCreateView function.
This is my MainActivity Class:
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
AppSectionsPagerAdapter mAppSectionsPagerAdapter;
ViewPager mViewPager;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager());
final ActionBar actionBar = getActionBar();
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mAppSectionsPagerAdapter);
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
for (int i = 0; i < mAppSectionsPagerAdapter.getCount(); i++) {
actionBar.addTab(
actionBar.newTab()
.setText(mAppSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
#Override
public void onTabUnselected(ActionBar.Tab tab, android.app.FragmentTransaction fragmentTransaction) {
}
#Override
public void onTabSelected(ActionBar.Tab tab, android.app.FragmentTransaction fragmentTransaction) {
// When the given tab is selected, switch to the corresponding page in the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabReselected(ActionBar.Tab tab, android.app.FragmentTransaction fragmentTransaction) {
}
public static class AppSectionsPagerAdapter extends FragmentPagerAdapter {
public AppSectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
Fragment a;
#Override
public Fragment getItem(int i) {
switch (i) {
case 0:
return new FragmentA();
default:
return new FragmentB();
}
}
#Override
public int getCount() {
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
return "Section " + (position + 1);
}
}
}
This is one of my ListFragment class (the second is the same but different name & layout file):
public class FragmentA extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.favorites_layout, container, false);
updateStationsView(0);
return rootView;
}
}
updateStationView is a function that populates the List. removing it did not help, so I figured it's harmless.
The error is thrown right after the:
return rootView;
which returns to the onCreate functions of MainActivity.
When I'm changing the ListFragment to be a simple Fragment it works. I think I'm lacking some knowledge to figure this one out. I really want to use ListFragment...
Can someone please try an help ?
Many thanks for your efforts.
Adding the XML files:
activity_main.xml:
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
favorites_layout.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
I im quite sure the issue is that your custom layout for the ListFragment does not contain a ListView. These lines of code are causing the error because you need to have a ListView inside your "favourites_layout" .xml file.
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.favorites_layout, container, false);
updateStationsView(0);
return rootView;
}
ListFragment has a default layout that consists of a single list view.
However, if you desire, you can customize the fragment layout by
returning your own view hierarchy from onCreateView(LayoutInflater,
ViewGroup, Bundle). To do this, your view hierarchy must contain a
ListView object with the id "#android:id/list" (or list if it's in
code)
So your layout could for example look like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
See here for more:
http://developer.android.com/reference/android/app/ListFragment.html