Examples with OnPageChangeListener android.support.v4.view.ViewPager.OnPageChangeListener used on opensource projects

Example 6 with OnPageChangeListener

use of android.support.v4.view.ViewPager.OnPageChangeListener in project Android-Developers-Samples by johnjohndoe.

the class MainActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Set content view (which contains a CheeseListFragment)
    setContentView(R.layout.sample_main);
    // Retrieve the ViewPager from the content view
    ViewPager vp = (ViewPager) findViewById(R.id.viewpager);
    // Set an OnPageChangeListener so we are notified when a new item is selected
    vp.setOnPageChangeListener(mOnPageChangeListener);
    // Finally set the adapter so the ViewPager can display items
    vp.setAdapter(mPagerAdapter);
}

Example 7 with OnPageChangeListener

use of android.support.v4.view.ViewPager.OnPageChangeListener in project material-components-android by material-components.

the class TabLayout method setupWithViewPager.

private void setupWithViewPager(@Nullable final ViewPager viewPager, boolean autoRefresh, boolean implicitSetup) {
    if (mViewPager != null) {
        // If we've already been setup with a ViewPager, remove us from it
        if (mPageChangeListener != null) {
            mViewPager.removeOnPageChangeListener(mPageChangeListener);
        }
        if (mAdapterChangeListener != null) {
            mViewPager.removeOnAdapterChangeListener(mAdapterChangeListener);
        }
    }
    if (mCurrentVpSelectedListener != null) {
        // If we already have a tab selected listener for the ViewPager, remove it
        removeOnTabSelectedListener(mCurrentVpSelectedListener);
        mCurrentVpSelectedListener = null;
    }
    if (viewPager != null) {
        mViewPager = viewPager;
        // Add our custom OnPageChangeListener to the ViewPager
        if (mPageChangeListener == null) {
            mPageChangeListener = new TabLayoutOnPageChangeListener(this);
        }
        mPageChangeListener.reset();
        viewPager.addOnPageChangeListener(mPageChangeListener);
        // Now we'll add a tab selected listener to set ViewPager's current item
        mCurrentVpSelectedListener = new ViewPagerOnTabSelectedListener(viewPager);
        addOnTabSelectedListener(mCurrentVpSelectedListener);
        final PagerAdapter adapter = viewPager.getAdapter();
        if (adapter != null) {
            // Now we'll populate ourselves from the pager adapter, adding an observer if
            // autoRefresh is enabled
            setPagerAdapter(adapter, autoRefresh);
        }
        // Add a listener so that we're notified of any adapter changes
        if (mAdapterChangeListener == null) {
            mAdapterChangeListener = new AdapterChangeListener();
        }
        mAdapterChangeListener.setAutoRefresh(autoRefresh);
        viewPager.addOnAdapterChangeListener(mAdapterChangeListener);
        // Now update the scroll position to match the ViewPager's current item
        setScrollPosition(viewPager.getCurrentItem(), 0f, true);
    } else {
        // We've been given a null ViewPager so we need to clear out the internal state,
        // listeners and observers
        mViewPager = null;
        setPagerAdapter(null, false);
    }
    mSetupViewPagerImplicitly = implicitSetup;
}

Example 8 with OnPageChangeListener

use of android.support.v4.view.ViewPager.OnPageChangeListener in project frostwire by frostwire.

the class TransferDetailActivity method initComponents.

@Override
protected void initComponents(Bundle savedInstanceState) {
    super.initComponents(savedInstanceState);
    if (!initUIBittorrentDownload()) {
        UIUtils.showShortMessage(this, R.string.could_not_open_transfer_detail_invalid_infohash);
        finish();
        return;
    }
    transferDetailFragment = findFragment(R.id.fragment_transfer_detail);
    if (transferDetailFragment != null) {
        transferDetailFragment.setUiBittorrentDownload(uiBittorrentDownload);
    }
    initTabTitles();
    initFragments();
    if (detailFragments == null || detailFragments.length <= 0) {
        throw new RuntimeException("check your logic: can't initialize components without initialized fragments");
    }
    if (savedInstanceState != null) {
        lastSelectedTabIndex = savedInstanceState.getInt("lastSelectedTabIndex", -1);
    } else {
        lastSelectedTabIndex = ConfigurationManager.instance().getInt(Constants.PREF_KEY_TORRENT_TRANSFER_DETAIL_LAST_SELECTED_TAB_INDEX);
    }
    OnPageChangeListener onPageChangeListener = new OnPageChangeListener(this);
    SectionsPagerAdapter mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager(), detailFragments);
    ViewPager viewPager = findViewById(R.id.transfer_detail_viewpager);
    if (viewPager != null) {
        viewPager.clearOnPageChangeListeners();
        viewPager.setAdapter(mSectionsPagerAdapter);
        viewPager.setCurrentItem(lastSelectedTabIndex == -1 ? 0 : lastSelectedTabIndex);
        viewPager.addOnPageChangeListener(onPageChangeListener);
        TabLayout tabLayout = findViewById(R.id.transfer_detail_tab_layout);
        tabLayout.setupWithViewPager(viewPager);
    } else {
        throw new RuntimeException("initComponents() Could not get viewPager");
    }
}

Example 9 with OnPageChangeListener

use of android.support.v4.view.ViewPager.OnPageChangeListener in project Osmand by osmandapp.

the class SearchActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    ((OsmandApplication) getApplication()).applyTheme(this);
    super.onCreate(savedInstanceState);
    getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
    long t = System.currentTimeMillis();
    setContentView(R.layout.tab_content);
    settings = ((OsmandApplication) getApplication()).getSettings();
    accessibilityAssistant = new AccessibilityAssistant(this);
    navigationInfo = new NavigationInfo((OsmandApplication) getApplication());
    showOnlyOneTab = getIntent() != null && getIntent().getBooleanExtra(SHOW_ONLY_ONE_TAB, false);
    getSupportActionBar().setTitle("");
    getSupportActionBar().setElevation(0);
    Integer tab = settings.SEARCH_TAB.get();
    if (!showOnlyOneTab) {
        ViewPager mViewPager = (ViewPager) findViewById(R.id.pager);
        PagerSlidingTabStrip mSlidingTabLayout = (PagerSlidingTabStrip) findViewById(R.id.sliding_tabs);
        List<TabItem> mTabs = new ArrayList<TabItem>();
        mTabs.add(getTabIndicator(R.string.poi, getFragment(POI_TAB_INDEX)));
        mTabs.add(getTabIndicator(R.string.address, getFragment(ADDRESS_TAB_INDEX)));
        mTabs.add(getTabIndicator(R.string.shared_string_location, getFragment(LOCATION_TAB_INDEX)));
        mTabs.add(getTabIndicator(R.string.favorite, getFragment(FAVORITES_TAB_INDEX)));
        mTabs.add(getTabIndicator(R.string.shared_string_history, getFragment(HISTORY_TAB_INDEX)));
        setViewPagerAdapter(mViewPager, mTabs);
        mSlidingTabLayout.setViewPager(mViewPager);
        mViewPager.setCurrentItem(Math.min(tab, HISTORY_TAB_INDEX));
        mSlidingTabLayout.setOnPageChangeListener(new OnPageChangeListener() {

            @Override
            public void onPageSelected(int arg0) {
                settings.SEARCH_TAB.set(arg0);
            }

            @Override
            public void onPageScrolled(int arg0, float arg1, int arg2) {
            }

            @Override
            public void onPageScrollStateChanged(int arg0) {
            }
        });
    } else {
        setContentView(R.layout.search_activity_single);
        Class<?> cl = getFragment(tab);
        try {
            getSupportFragmentManager().beginTransaction().replace(R.id.layout, (Fragment) cl.newInstance()).commit();
        } catch (InstantiationException e) {
            throw new IllegalStateException(e);
        } catch (IllegalAccessException e) {
            throw new IllegalStateException(e);
        }
    }
    setTopSpinner();
    Log.i("net.osmand", "Start on create " + (System.currentTimeMillis() - t));
    Intent intent = getIntent();
    OsmandSettings settings = ((OsmandApplication) getApplication()).getSettings();
    LatLon last = settings.getLastKnownMapLocation();
    if (intent != null) {
        double lat = intent.getDoubleExtra(SEARCH_LAT, 0);
        double lon = intent.getDoubleExtra(SEARCH_LON, 0);
        if (lat != 0 || lon != 0) {
            LatLon l = new LatLon(lat, lon);
            if (!Algorithms.objectEquals(reqSearchPoint, l)) {
                reqSearchPoint = l;
                if ((Math.abs(lat - last.getLatitude()) < 0.00001) && (Math.abs(lon - last.getLongitude()) < 0.00001)) {
                    updateSearchPoint(reqSearchPoint, getString(R.string.select_search_position) + " " + getString(R.string.search_position_map_view), false);
                } else {
                    updateSearchPoint(reqSearchPoint, getString(R.string.select_search_position) + " ", true);
                }
            }
        }
    }
    if (searchPoint == null) {
        if (!Algorithms.objectEquals(reqSearchPoint, last)) {
            reqSearchPoint = last;
            updateSearchPoint(last, getString(R.string.select_search_position) + " " + getString(R.string.search_position_map_view), false);
        }
    }
}

Example 10 with OnPageChangeListener

use of android.support.v4.view.ViewPager.OnPageChangeListener in project quran_android by quran.

the class PagerActivity method getViewPagerObservable.

public Observable<Integer> getViewPagerObservable() {
    return Observable.create(e -> {
        final OnPageChangeListener pageChangedListener = new ViewPager.SimpleOnPageChangeListener() {

            @Override
            public void onPageSelected(int position) {
                e.onNext(quranInfo.getPageFromPos(position, isDualPages));
            }
        };
        viewPager.addOnPageChangeListener(pageChangedListener);
        e.onNext(getCurrentPage());
        e.setCancellable(() -> viewPager.removeOnPageChangeListener(pageChangedListener));
    });
}