I'm trying to use a page title strip and I need to put three seekbars in one of my fragments. This is my code:
public class MainActivity extends FragmentActivity {
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link android.support.v4.app.FragmentPagerAdapter} derivative, which
* will keep every loaded fragment in memory. If this becomes too memory
* intensive, it may be best to switch to a
* {#link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
#Override
protected 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.
mSectionsPagerAdapter = new SectionsPagerAdapter(
getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
Fragment fragment = null;
Bundle args = new Bundle();
switch (position) {
case 0:
fragment = new Page1();
args.putInt(Page1.ARG_SECTION_NUMBER, position + 1);
break;
case 1:
fragment = new Page2();
args.putInt(Page2.ARG_SECTION_NUMBER, position + 1);
break;
case 2:
fragment = new Page3();
args.putInt(Page3.ARG_SECTION_NUMBER, position + 1);
break;
}
fragment.setArguments(args);
return fragment;
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase();
case 1:
return getString(R.string.title_section2).toUpperCase();
case 2:
return getString(R.string.title_section3).toUpperCase();
}
return null;
}
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class Page1 extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public Page1() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Create a new TextView and set its text to the fragment's section
// number argument value.
// TextView textView = new TextView(getActivity());
// textView.setGravity(Gravity.CENTER);
// textView.setText(Integer.toString(getArguments().getInt(
// ARG_SECTION_NUMBER)));
SeekBar sb1 = new SeekBar(getActivity());
SeekBar sb2 = new SeekBar(getActivity());
SeekBar sb3 = new SeekBar(getActivity());
return sb1;
}
}
public static class Page2 extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public Page2() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Create a new TextView and set its text to the fragment's section
// number argument value.
TextView textView = new TextView(getActivity());
textView.setGravity(Gravity.LEFT);
textView.setText("Second tab");
return textView;
}
}
public static class Page3 extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public Page3() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Create a new TextView and set its text to the fragment's section
// number argument value.
TextView textView = new TextView(getActivity());
textView.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.RIGHT);
textView.setText("third tab");
return textView;
}
}
}
This actually works but I only have one seekbar in the first page. Ho can I put the three of them??? Thanks!!!!
on this code:
SeekBar sb1 = new SeekBar(getActivity());
SeekBar sb2 = new SeekBar(getActivity());
SeekBar sb3 = new SeekBar(getActivity());
return sb1;
you're creating 3 SeekBars but only returning the first one. The other two are being garbage collected quickly after that return statement.
Inside the onCreateView method you must create a GroupView, and this group will have the 3 SeekBars or whatever layout you need. The best/easiest way to do it is creating a XML layout and use the LayoutInflater that is passed on the function. Something similar to:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.frag_page1, null);
}
Related
So, I have a tabbed Activity called "Onglets". There I created 2 fragments ( OngletCours and OngletNotes).
In OngletCours I have a ListView, and I want to be able to swap to my 2nd fragment (OngletNotes), the name of the Item I clicked ( setonItemClickListener). But when I click on an Item, it doenst go to my 2nd fragment. It remains in the 1st fragment but the content of the 2nd Fragment appears in my current Fragment (OngletCours). I mean, I want to go the 2nd tab when I click on an Item of my listView in my 1st tab
Before clicking on an Item, my app looks like this :
Before clicking on an Item
After clicking on an Item you can see that the text "Onglet des résultats", is inserted at the top. But I dont want that. I want to go to the 2nd tab "Notes".
After clicking on an Item
Here's the code from my TabbedActivity
Onglets.java
public class Onglets extends AppCompatActivity {
DatabaseHelper dbhelper = new DatabaseHelper(this);
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {#link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_onglets);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_onglets, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
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.ongletcours, container, false);
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
//méthode qui retourne une Fragment qui correspond à chacun des onglets
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
//switch qui retourne la position des différents Onglets
switch (position){
case 0:
OngletCours onglet1 = new OngletCours();
return onglet1;
case 1:
OngletNotes onglet2 = new OngletNotes();
return onglet2;
default:
return null;
}
}
//méthode qui retourne le nombre d'onglets disponibles
#Override
public int getCount() {
// Show 3 total pages.
return 2;
}
//méthode qui sert à définir un titre à chaque Onglet
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "COURS";
case 1:
return "NOTES";
}
return null;
}
}
}
Here's the code of the 2 fragments.
OngletCours.java ( I only show you the setOnItemClickListener, because it's where the problems appear)
ListView l1 = (ListView) rootView.findViewById(R.id.ListCours);
//ce Listener permet de détecter si on clique sur un élément de la liste
l1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
OngletNotes targetFragment = OngletNotes.newInstance();
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.addToBackStack(null);
transaction.replace(R.id.fragment_holder, targetFragment)
.commit();
}
});
OngletNotes.java
public class OngletNotes extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.ongletnotes, container, false);
return rootView;
}
public static OngletNotes newInstance() {
OngletNotes fragment = new OngletNotes();
// put values which you want to pass to fragment
// Bundle args = new Bundle();
// fragment.setArguments(args);
return fragment;
}
}
Please help me to solve this and thank you in advance !
You can refer this method to trandfer the data from the one fragment to another
//Put the value
YourNewFragment ldf = new YourNewFragment ();
Bundle args = new Bundle();
args.putString("YourKey", "YourValue");
ldf.setArguments(args);
//Inflate the fragment
getFragmentManager().beginTransaction().add(R.id.container, ldf).commit();
In onCreateView of the new Fragment:
//Retrieve the value
String value = getArguments().getString("YourKey");
After clicking on an Item you can see that the text "Onglet des
résultats", is inserted at the top. But I dont want that. I want to go
to the 2nd tab "Notes"
You create 2 fragments at the same time, so, your fragment OngletNotes is initiazlied and you can pass data from fragment OngletCours to the second fragment. You create a method changeData(String data).
YOu code above create another fragment abvove current fragment, so the image 2 like you see
public class OngletNotes extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.ongletnotes, container, false);
return rootView;
}
public static OngletNotes newInstance() {
OngletNotes fragment = new OngletNotes();
// put values which you want to pass to fragment
// Bundle args = new Bundle();
// fragment.setArguments(args);
return fragment;
}
public void changeData(String data)
// DO something
}
Now, after you handle click listener from fragment OngletCours, you can pass data to fragment OngletNotes
l1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
OngletNotes fragment = ((Onglets)getActviity())getOngletNotes ();
if(fragment != null) {
fragment.changeData("Set you value to send here");
}
((Onglets)getActviity()).goToFragment(1);
}
});
In you Onglets Activity
public OngletNotes getOngletNotes () {
return (OngletNotes ) getSupportFragmentManager().findFragmentByTag(
"android:switcher:" + R.id.viewPager + ":" + 1);
}
public void goToFragment (int index) {
mViewPager.setCurrentItem(index)
}
I wanted to add the swipe nav bar which is as shown in the GIF, to my app.
EDIT:
public class MainActivity extends FragmentActivity {
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link android.support.v4.app.FragmentPagerAdapter} derivative, which
* will keep every loaded fragment in memory. If this becomes too memory
* intensive, it may be best to switch to a
* {#link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
#Override
protected 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.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main_dummy, container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
}
I tried the following code to implement this nav bar, basically it has a title strip and navigation bar, But now.. How do I use different layouts for different navigation swipes?
Thanks for any help!
Look into ViewPager and FragmentPagerAdapter from the support libraries.
http://developer.android.com/reference/android/support/v4/view/ViewPager.html
http://developer.android.com/reference/android/support/v4/app/FragmentPagerAdapter.html
You need a ViewPager, Fragments and PagerTitleStrip
You can read about that here:
http://developer.android.com/training/implementing-navigation/lateral.html#PagerTitleStrip
I strongly recommend for you to learn how to use and deal with Fragments in an App, if you aren't using them already. It's needed in a ViewPager.
I used to program in iOS language where every UIView class has its own UIViewController class to manage/populate the view itself. I'm trying now to write a simple android app that parse a JSONArray from url and then populate four views but I don't know how to implement a class for every view and pass them the strings parameters to populate them. Could you tell me what is the best way to implement the logic of the app? I have the new project with swipable-tabs then I have to use fragments. Are these fragments the same as the UIView in iOS? Help me please.
I did this, I would like to know if it is correct. I created a new Project with Blank activity and "Scrollable Tabs + Swipe" as Navigation type.
My main activity:
public class MyMainActvity extends FragmentActivity {
private static String url = "http://www.myurl.it";
static JSONObject jObj = null;
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link android.support.v4.app.FragmentPagerAdapter} derivative, which
* will keep every loaded fragment in memory. If this becomes too memory
* intensive, it may be best to switch to a
* {#link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_activity);
new JSONParse().execute();
// Create the adapter that will return a fragment for each of the three
// primary sections of the app.
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main_activity, menu);
return true;
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
switch (position) {
case 0:
{
HomeSection homeFrag= new HomeSection();
homeFrag.newInstance(jObj);
return homeFrag;
}
case 1:
{
ServiceSection servFrag= new ServiceSection();
servFrag.newInstance(jObj);
return servFrag;
}
case 2:
{
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
case 3:
{
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
}
return null;
}
#Override
public int getCount() {
// Show 4 total pages.
return 4;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
case 3:
return getString(R.string.title_section4).toUpperCase(l);
}
return null;
}
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(
R.layout.fragment_dummy, container, false);
TextView dummyTextView = (TextView) rootView
.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(
ARG_SECTION_NUMBER)));
return rootView;
}
}
private class JSONParse extends AsyncTask<String, String, JSONArray> {
private ProgressDialog pDialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MyMainActivity.this);
pDialog.setMessage("Getting Data ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
#Override
protected JSONArray doInBackground(String... args) {
JSONParser jParser= new JSONParser();
JSONArray json =jParser.getJSONFromUrl(url);
return json;
}
#Override
protected void onPostExecute(JSONArray json) {
pDialog.dismiss();
Log.d("JSONARRAY:", json.toString());
try {
JSONObject json_data = json.getJSONObject(0);
jObj= json_data;
mSectionsPagerAdapter = new SectionsPagerAdapter(
getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
catch(JSONException exception) {
Log.e("ERROR", exception.getMessage());
}
}
}
}
And this is one one my subclassed Fragments:
public class HomeSection extends Fragment {
JSONObject _jObj;
public HomeSection(){}
public void newInstance(JSONObject jObj) {
Bundle args = new Bundle();
_jObj= jObj;
try{
String content= _jObj.getString("descrizione");
args.putString("description", content);
}
catch(JSONException exception){
Log.e("ERROR JSON HOME", exception.getMessage());
}
// Put any other arguments
this.setArguments(args);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(
R.layout.fragment_dummy, container, false);
TextView dummyTextView = (TextView) rootView
.findViewById(R.id.section_label);
try {
dummyTextView.setText(_jObj.getString("descrizione"));
}
catch(JSONException exception){
Log.e("ERROR JSON HOME", exception.getMessage());
}
return rootView;
}
}
It works but I would like if it is a correct way to populate the views in my app. Then I didn't know if in the HomeSection class, the Bundle that I created in the "newIstance" method is effectively necessary because I set my text in the view within the method onCreateView. Could you help me please? Thanks
No. Fragments are not the equivalent of UIView. The equivalent of UIView is the Android View class. However, this is not used directly in most cases.
Unlike iOS, Android doesn't use a pure MVC pattern. It uses something more like a MVP pattern (See MVC pattern on Android and Which design patterns are used on Android?). Here, the Activity acts as the main View container and is the main entry point for the application.
Basically, you can use one of the subclasses of the View class such as TextView, ImageView etc and put them inside an Activity or a Fragment.
The Activity/Fragment will inflate your views (make objects out of them after parsing the XML) and show them to the user. The user can then interact with the views and these touch events will be routed by the Activity/Fragment to the respective views or will consumed by the Activity/Fragment itself depending on your logic.
I suggest you go through this excellent Android Bootcamp tutorial series which will really help you learn all the basics along with the 'Android way' of doing things.
I'm trying to create tabs with swipe view using fragment. I found a solution but it provides a single dummy text layout for each tabs instead of using separated layout. I'd like to create three different classes with three different layouts and use them in tabs and if possible then using a custom background for each tabs (while selected/not selected). I can do all these things without fragment but using fragment it seems challenging.
public class MainActivity extends FragmentActivity {
SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;
#Override
protected 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.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main_dummy, container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
}
To achieve your target you must use ActionBarSherlock library, and to call other fragments you should not need to use Intent,
I have written same kind of program few months ago to call different Fragments i used below code
#Override
public Fragment getItem(int arg0) {
switch (arg0) {
// Open FragmentTab1.java
case 0:
FragmentTab1 fragmenttab1 = new FragmentTab1();
return fragmenttab1;
// Open FragmentTab2.java
case 1:
FragmentTab2 fragmenttab2 = new FragmentTab2();
return fragmenttab2;
// Open FragmentTab3.java
case 2:
FragmentTab3 fragmenttab3 = new FragmentTab3();
return fragmenttab3;
}
return null;
}
and to call show different - different layouts for each and every Fragment you should call different - different Fragments and also need to write XMLs too .....
FragmentTab1.java :-
public class FragmentTab1 extends SherlockFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Get the view from fragmenttab1.xml
View view = inflater.inflate(R.layout.fragment1, container, false);
return view;
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
setUserVisibleHint(true);
}
}
fragment1.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" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Your Layout Goes Here for Fragment1" />
</RelativeLayout>
in a same way you have to write classes and xmls for all needed Fragments....
for more detailed information or to try out an example, use this :
http://www.androidbegin.com/tutorial/android-actionbarsherlock-viewpager-tabs-tutorial/
in the following link that help you how to create Tab fragment in sperated intents:
Tab Fragments
I have been at this for about 3 days looking up various websites for reference, but I am stuck. I am using the swipe and tabs layout which give you the standard dummy section fragment. But I have 3 separate fragments that I want to display different .xml layouts for. This is the section of code that is bothering me:
import java.util.Locale;
import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link android.support.v4.app.FragmentPagerAdapter} derivative, which
* will keep every loaded fragment in memory. If this becomes too memory
* intensive, it may be best to switch to a
* {#link android.support.v4.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Set up the action bar.
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Create the adapter that will return a fragment for each of the three
// primary sections of the app.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
// When swiping between different sections, select the corresponding
// tab. We can also use ActionBar.Tab#select() to do this if we have
// a reference to the Tab.
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
// For each of the sections in the app, add a tab to the action bar.
for (int i = 0; i < mSectionsPagerAdapter.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 callback (listener) for when
// this tab is selected.
actionBar.addTab(
actionBar.newTab()
.setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#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 onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
#Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
Fragment fragment = new DummySectionFragment();
Fragment fragment2 = new DummySectionFragment2();
Fragment fragment3 = new DummySectionFragment3();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
args.putInt(DummySectionFragment2.ARG_SECTION_NUMBER, position + 2);
args.putInt(DummySectionFragment3.ARG_SECTION_NUMBER, position + 3);
fragment.setArguments(args);
fragment2.setArguments(args);
fragment3.setArguments(args);
return fragment2;
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
/**
* A dummy fragment representing a section of the app, but that simply
* displays dummy text.
*/
public static class DummySectionFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
public static class DummySectionFragment2 extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment2() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView2 = inflater.inflate(R.layout.fragment_2, container, false);
return rootView2;
}
}
public static class DummySectionFragment3 extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
public static final String ARG_SECTION_NUMBER = "section_number_3";
public DummySectionFragment3() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView3 = inflater.inflate(R.layout.fragment_3, container, false);
return rootView3;
}
}
}
This returns fragment 2. I want to display 3 fragments when each tab is selected. How do I do it? I'm guessing that it's what is returning right?
edit.. ive included the whole java class.. in the hope i can resove this.. How do I use FragmentPagerAdapter to have tabs with different content? ive just tried the following (Second Answer as i didnt understnd what was meant in the first) it didnt work
Use the method this way:
#Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
switch (position) {
case 0:
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(fragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
case 1:
Fragment fragment2 = new DummySectionFragment2();
Bundle args = new Bundle();
args.putInt(fragment2 .ARG_SECTION_NUMBER, position + 2);
fragment2.setArguments(args);
return fragment2;
case 2:
Fragment fragment3 = new DummySectionFragment3();
Bundle args = new Bundle();
args.putInt(fragment3.ARG_SECTION_NUMBER, position + 3);
fragment3.setArguments(args);
return fragment3;
default:
return null;
}
}