I am pasting all the code bellow because i am not sure where i went wrong anymore.
The app works fine until i let //mViewPager.setCurrentItem(tab.getPosition()); go in action, the app wont start anymore, i tried to follow the steps on the developers site. An explanation for the problem would also be appreciated.
Thank you!
package com.basel.ribbit;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import com.parse.ParseAnalytics;
import com.parse.ParseUser;
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 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.v13.app.FragmentStatePagerAdapter}.
*/
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
public static final String TAG = MainActivity.class.getSimpleName();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//createActionBar();
ParseAnalytics.trackAppOpened(getIntent());
createActionBar();
ParseUser currentUser = ParseUser.getCurrentUser();
if(currentUser == null){
navigateToLogin();}else{
Log.i(TAG,"A NEW USER HAS LOGGED IN " + currentUser.getUsername());
}
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(this, getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
setPagerOnItemSelected();
}
private void setPagerOnItemSelected() {
mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// TODO Auto-generated method stub
// getActionBar().setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
#Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
}
private void createActionBar() {
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
ActionBar.TabListener tabListener = new ActionBar.TabListener() {
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
//mViewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
};
actionBar.addTab(actionBar.newTab().setText("Hello").setTabListener(tabListener));
actionBar.addTab(actionBar.newTab().setText("Hi").setTabListener(tabListener));
}
private void navigateToLogin() {
Intent intent = new Intent (this, LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
#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 boolean onMenuItemSelected(int featureId, MenuItem item) {
// TODO Auto-generated method stub
int id = item.getItemId();
if(id == R.id.action_logout){
ParseUser.logOut();
navigateToLogin();
}
return super.onMenuItemSelected(featureId, item);
enter code here
}
#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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Move this lines before createActionBar();
mViewPager = (ViewPager) findViewById(R.id.pager);
You are crashing because you haven't initialized mViewPager yet, and you are trying to use it. If you wait until after you've set mViewPager, it should work.
The other possibility is that you don't have a ViewPager in activity_main.xml with id pager.
Related
I want to start different activities depending on the click of the tab bar item but I get a blank page as started activity in the "windows class". What I intended to do is start different activities on click of tab bar item.
Tab Bar Activity Class
import android.app.ActionBar;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TabHost;
public class TabBar extends FragmentActivity {
ViewPager Tab;
TabPagerAdapter TabAdapter;
ActionBar actionBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tabbardefault);
try {
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);
}
catch (Exception e)
{
}
ActionBar.TabListener tabListener = new ActionBar.TabListener(){
#Override
public void onTabReselected(android.app.ActionBar.Tab tab,
FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
Tab.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(android.app.ActionBar.Tab tab,
FragmentTransaction ft) {
// TODO Auto-generated method stub
}};
//Add New Tab
actionBar.addTab(actionBar.newTab().setText("Home").setTabListener(tabListener));
actionBar.addTab(actionBar.newTab().setText("Celeb").setTabListener(tabListener));
actionBar.addTab(actionBar.newTab().setText("Videos").setTabListener(tabListener));
}
#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_tab_bar, 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
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
TabPagerAdapter
import android.content.Intent;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
public class TabPagerAdapter extends FragmentStatePagerAdapter {
public TabPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
#Override
public Fragment getItem(int i) {
switch (i) {
case 0:
//Fragement for Android Tab
return new Android();
case 1:
//Fragment for Ios Tab
return new Ios();
case 2:
//Fragment for Windows Tab
return new Windows();
}
return null;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 3; //No of Tabs
}
}
Windows
public class Windows extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View windows = inflater.inflate(R.layout.feed_main, container, false);
//((TextView)windows.findViewById(R.id.textView)).setText("Windows");
return windows;
}}
To answer you, you are not actually starting an Activity you a switching through Fragments, Fragment is just a Custom View, and you inflate an xml to represent the Custom View which is the Fragment, if you want to start an Activity after your Tab is selected then you call startActivity(Intent); startActivity(new Intent(classname.this,the_class_i_want_to_start.class));
and your Windows class extends Fragment it should be Activity if what you want is the functionality of Fragment then you aint got a problem
hope its lucid
I am stuck with making tabs using ActionBar. When I make it to run app with some code changes, my app crashes instantly without even starting. The current code is closest to working where I could get. This is MainActivity here:
import android.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.Menu;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBar.Tab;
import android.app.ActionBar;
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
ActionBar actionbar;
ViewPager viewpager;
FragmentPageAdapter ft;
FragmentPageAdapter mAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewpager = (ViewPager) findViewById(R.id.pager);
ft = new FragmentPageAdapter(getSupportFragmentManager());
mAdapter = new FragmentPageAdapter(getSupportFragmentManager());
//final ActionBar actionBar = getActionBar();
//final ActionBar actionBar = getSupportActionBar();
actionbar = getActionBar();
viewpager.setAdapter(ft);
actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionbar.addTab(actionbar.newTab().setText("DotNet").setTabListener(this));
actionbar.addTab(actionbar.newTab().setText("Eal").setTabListener(this));
actionbar.addTab(actionbar.newTab().setText("Neowin").setTabListener(this));
actionbar.addTab(actionbar.newTab().setText("PcWorld").setTabListener(this));
viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int arg0) {
actionbar.setSelectedNavigationItem(arg0);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
#Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
}
#Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#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, menu);
return true;
}
}
I have an app that has 3 swipe tabs: "Map, "Events" and "Reviews". I've logged the data (as seen in my code wherever there is a log), and the following occurs.
I run the app and it opens on the 'Map' tab. The log however, shows
02-14 05:37:56.240: D/curent tab position(1787): 0
02-14 05:37:56.260: D/arg0(1787): 0
02-14 05:37:56.260: D/tab chosen(1787): MapFragment
02-14 05:37:56.260: D/arg0(1787): 1
02-14 05:37:56.260: D/tab chosen(1787): List_Of_EventsFragment
I click on the "Events" tab (the second tab on my actionbar) and the events fragment displays just fine. But the log shows the following, and also shows JSON processing which is NOT part of the "Events" fragment. it's coded in the "Reviews" fragment. So it still shows the List_Of_EventsFragment yet in the background its loading ReviewsListFragment.
02-14 05:38:37.890: D/arg0(1787): 2
02-14 05:38:37.890: D/tab chosen(1787): ReviewsListFragment
02-14 05:38:37.910: D/current page position(1787): 1
02-14 05:38:37.910: D/current tab position(1787): 1
As you can see, the 'current page position' and 'current tab position' are correct. They display 0,1,2 respectfully for each tab. The problem seems to lie in "arg0". I have tried changing my if statements to "if (arg0==1)" instead of "(if arg0==0)" and so forth. That didn't work as it produced a nullpointerException. It seems when the app loads, arg0 equals 0 and then 1 immediately after, even though the "Map" fragment is open and nothing has been clicked.
package com.example.eventmapapp;
import android.os.Bundle;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.FragmentTransaction;
import android.util.Log;
import android.view.Menu;
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;
public class FrontPage extends FragmentActivity implements TabListener{
ActionBar actionbar;
ViewPager viewpager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_front_page);
viewpager =(ViewPager) findViewById(R.id.pager);
viewpager.setAdapter(new MyAdapter(getSupportFragmentManager()));
viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
actionbar.setSelectedNavigationItem(arg0);
Log.d("current page position", arg0 + "");
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
#Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
actionbar = getActionBar();
actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
ActionBar.Tab tab1 = actionbar.newTab();
tab1.setText("Map");
tab1.setTabListener(this);
ActionBar.Tab tab2 = actionbar.newTab();
tab2.setText("Events");
tab2.setTabListener(this);
ActionBar.Tab tab3 = actionbar.newTab();
tab3.setText("Reviews");
tab3.setTabListener(this);
actionbar.addTab(tab1);
actionbar.addTab(tab2);
actionbar.addTab(tab3);
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
viewpager.setCurrentItem(tab.getPosition());
Log.d("current tab position", tab.getPosition() + "");
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
class MyAdapter extends FragmentPagerAdapter
{
public MyAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
#Override
public Fragment getItem(int arg0) {
Fragment fragment = null;
Log.d("arg0", arg0 + "");
if (arg0==0) //|| arg0==1
{
fragment = new MapFragment();
Log.d("tab chosen", "MapFragment");
} else
if (arg0==1)
{
fragment = new List_Of_EventsFragment();
Log.d("tab chosen", "List_Of_EventsFragment");
} else
if (arg0==2)
{
fragment = new ReviewsListFragment();
Log.d("tab chosen", "ReviewsListFragment");
}
return fragment;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.front_page, menu);
return true;
}
}
This is pretty normal. When you load a tab it loads the tabs before and after it and destroy the other tabs and this is totally controlled by the ViewPager itself. This is called view preloading to show better smoothing while you are swiping between your views.
am following the Android Developers website to add sliding tabs to my Android app for my project, I am stuck with this one error and do not understand the problem, I know it has something to do with calling the correct Fragment layout, I am doing exactly what the tutorial tells me too, have any of you guys got any information to solve this, thank you.
package com.test.finalproject;
import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.content.Intent;
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.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends FragmentActivity implements View.OnClickListener {
DemoCollectionPagerAdapter mCollectionPagerAdapter;
ViewPager mViewPager;
Button buttonLogin;
Button buttonRegister;
Button buttonTheme;
Button buttonMaps;
#Override
protected void onCreate(Bundle savedInstanceState) {
Utils.setThemeToActivity(this);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final android.app.ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Create a tab listener that is called when the user changes tabs.
ActionBar.TabListener tabListener = new ActionBar.TabListener() {
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
// show the given tab
}
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
// hide the given tab
}
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
// probably ignore this event
}
};
// Add 3 tabs, specifying the tab's text and TabListener
for (int i = 0; i < 3; i++) {
actionBar.addTab(
actionBar.newTab()
.setText("Tab " + (i + 1))
.setTabListener(tabListener));
}
buttonLogin = (Button)findViewById(R.id.buttonLogin);
buttonLogin.setOnClickListener(this);
buttonRegister = (Button)findViewById(R.id.buttonRegister);
buttonRegister.setOnClickListener(this);
buttonTheme = (Button)findViewById(R.id.buttonTheme);
buttonTheme.setOnClickListener(this);
buttonMaps = (Button)findViewById(R.id.buttonMaps);
buttonMaps.setOnClickListener(this);
mCollectionPagerAdapter =
new DemoCollectionPagerAdapter(
getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mCollectionPagerAdapter);
}
public class DemoCollectionPagerAdapter extends FragmentStatePagerAdapter {
public DemoCollectionPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int i) {
Fragment fragment = new DemoObjectFragment();
Bundle args = new Bundle();
// Our object is just an integer :-P
args.putInt(DemoObjectFragment.ARG_OBJECT, i + 1);
fragment.setArguments(args);
return fragment;
}
#Override
public int getCount() {
return 100;
}
#Override
public CharSequence getPageTitle(int position) {
return "OBJECT " + (position + 1);
}
}
public static class DemoObjectFragment extends Fragment {
public static final String ARG_OBJECT = "object";
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
// The last two arguments ensure LayoutParams are inflated
// properly.
View rootView = inflater.inflate(
R.layout.fragment_collection_object, container, false);
Bundle args = getArguments();
((TextView) rootView.findViewById(android.R.id.text1)).setText(
Integer.toString(args.getInt(ARG_OBJECT)));
return rootView;
}
}
public void onCreate1(Bundle savedInstanceState) {
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// When swiping between pages, select the
// corresponding tab.
getActionBar().setSelectedNavigationItem(position);
}
});
}
private void buttonLoginClick()
{
startActivity (new Intent("MainApp"));
}
private void buttonRegisterClick()
{
startActivity (new Intent("TextToo"));
}
private void buttonThemeClick()
{
startActivity (new Intent("SettingsTheme"));
}
private void buttonMapsClick()
{
startActivity (new Intent("GoogleMaps"));
}
#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 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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onClick(View v) {
switch (v.getId())
{
case R.id.buttonLogin:
buttonLoginClick();
break;
}
switch (v.getId())
{
case R.id.buttonRegister:
buttonRegisterClick();
break;
}
switch (v.getId())
{
case R.id.buttonTheme:
buttonThemeClick();
break;
}
switch (v.getId())
{
case R.id.buttonMaps:
buttonMapsClick();
break;
}
}
}
The Error is on line 126.
The Error is: Description Resource Path Location Type
fragment_collection_object cannot be resolved or is not a field MainActivity.java /Login/src/com/test/finalproject line 126 Java Problem
The problem you are facing is because of the missing xml file in the layout folder of project/res
Go to http://developer.android.com/training/implementing-navigation/lateral.html
Click on "download the sample app" and unzip it. Add the EffectiveNavigation\res\layout\fragment_collection_object.xml to you project\res\layout. This,I guess will solve the problem.
//I am using action bar tabs in my app,I want to switch from one activity to another activity with in tabs when I press on tabs,how can I call the activity with in tabs. I want to display any activity with in actionbar tabs.
public class MainActivity extends Activity implements TabListener {
// Refresh menu item
private MenuItem action_search;
Tab tab1, tab2, tab3;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//creating tabs
ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
//adding tabs to actionbar
tab1 = actionBar.newTab();
tab1.setText("camera");
tab1.setTabListener(this);
actionBar.addTab(tab1);
tab2 = actionBar.newTab();
tab2.setText("contacts");
tab2.setTabListener(this);
actionBar.addTab(tab2);
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
switch (tab.getPosition()) {
case 0:
Intent i = new Intent(getApplicationContext(), MainActivity2.class);
startActivity(i);
break;
case 1:
Intent i = new Intent(getApplicationContext(), MainActivity2.class);
startActivity(i);
break;
}
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
}
MainActivity.java
package com.example.moviesswipe;
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.view.Menu;
#SuppressWarnings("unused")
#SuppressLint("NewApi")
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
private String[] tabs = { "English", "Tamil", "Hindi" };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_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) {
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#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 onTabReselected(Tab tab, android.app.FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabSelected(Tab tab, android.app.FragmentTransaction ft) {
// TODO Auto-generated method stub
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, android.app.FragmentTransaction ft) {
// TODO Auto-generated method stub
}
}
TabsPagerAdapter.java
package com.example.moviesswipe;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class TabsPagerAdapter extends FragmentPagerAdapter {
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
#Override
public Fragment getItem(int index) {
switch (index) {
case 0:
return new English();
case 1:
return new Tamil();
case 2:
return new Hindi();
}
return null;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
}
Here i placed three tabs , for each tab i created three activity.
English.java , Tamil.java and Hindi.java
sample one:
package com.example.moviesswipe;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
#SuppressWarnings("unused")
public class English extends Fragment{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.english, container, false);
return rootView;
}
}
For each class you need to create a layout:
No need to entry these classes in your manifest coz these are all fragments.
Try it like this dude :) Happy coding :)
Say if there any queries.