I had the same problem because my app works for both English and Hebrew. Here is what I did:
Set in the tabs activity android:layoutDirection="ltr".
In the tabs activity java – in onCreate moved to last page if the language was Hebrew.
In PlaceholderFragment class both in onCreateView and getPageTitle checked if the language is Hebrew, and if so returned the views and tittle in reverse order.
I know the question was regarding to rtl in general and not just Hebrew, but this change can be easily implemented by changing the condition.
Here my FinalTutorialActivity complete code:
package com.romsharony.finaltutorial;
import android.support.design.widget.TabLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import java.util.Locale;
public class FinalTutorialActivity extends AppCompatActivity {
/**
* 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_final_tutorial);
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);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
// Go to last page if language is Hebrew
if (Locale.getDefault().toString().equals("iw_IL") || Locale.getDefault().toString().equals("he_IL")) {
mViewPager.setCurrentItem(2);
}
}
@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_final_tutorial, 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);
}
/**
* 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;
// If language is Hebrew return the pages in reverse direction
if (Locale.getDefault().toString().equals("iw_IL") || Locale.getDefault().toString().equals("he_IL")) {
switch (getArguments().getInt(ARG_SECTION_NUMBER)) {
case 1:
rootView = inflater.inflate(R.layout.page_three, container, false);
break;
case 2:
rootView = inflater.inflate(R.layout.page_two, container, false);
break;
default:
rootView = inflater.inflate(R.layout.page_one, container, false);
}
} else {
switch (getArguments().getInt(ARG_SECTION_NUMBER)) {
case 3:
rootView = inflater.inflate(R.layout.page_three, container, false);
break;
case 2:
rootView = inflater.inflate(R.layout.page_two, container, false);
break;
default:
rootView = inflater.inflate(R.layout.page_one, container, false);
}
}
return rootView;
}
}
/**
* 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 PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position + 1);
}
@Override
public int getCount() {
// Show 3 total pages.
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
// If language is Hebrew return the titles in reverse direction
if (Locale.getDefault().toString().equals("iw_IL") || Locale.getDefault().toString().equals("he_IL")) {
switch (position) {
case 0:
return getResources().getString(R.string.section_three);
case 1:
return getResources().getString(R.string.section_2);
default:
return getResources().getString(R.string.section_one);
}
} else {
switch (position) {
case 2:
return getResources().getString(R.string.section_three);
case 1:
return getResources().getString(R.string.section_2);
default:
return getResources().getString(R.string.section_one);
}
}
}
}
}
