Example usage for android.support.v4.app FragmentManager getBackStackEntryCount

Introduction

In this page you can find the example usage for android.support.v4.app FragmentManager getBackStackEntryCount.

Prototype

public abstract int getBackStackEntryCount();

Source Link

Document

Return the number of entries currently in the back stack.

Usage

From source file:br.ufjf.app.ui.DrawerActivity.java

@Override
public void onBackPressed() {
    // If the drawer is open, back will close it
    if (drawerLayout != null && drawerLayout.isDrawerOpen(GravityCompat.START)) {
        drawerLayout.closeDrawers();/*  w  w w  . j  a v a  2s .c  o  m*/
        return;
    }
    // Otherwise, it may return to the anterior fragment stack
    FragmentManager fragmentManager = getSupportFragmentManager();
    if (fragmentManager.getBackStackEntryCount() > 0)
        fragmentManager.popBackStack();
    else
        // Lastly, it will rely on the system behavior for back
        super.onBackPressed();

}

From source file:com.doplgangr.secrecy.views.MainActivity.java

void addFragment(final Fragment fragment, int transition1, int transition2) {
    if (mFragmentNameList.contains(fragment.getClass())) {
        mNavigation.setSelectedItem(mFragmentNameList.indexOf(fragment.getClass()));
    }//  www .  ja  va  2s  . co  m
    String tag = fragment.getClass().getName();
    FragmentManager manager = getSupportFragmentManager();
    if (manager.getBackStackEntryCount() >= 1) {

        String activeFragmentTag = getSupportFragmentManager()
                .getBackStackEntryAt(getSupportFragmentManager().getBackStackEntryCount() - 1).getName();
        Fragment activeFragment = getSupportFragmentManager().findFragmentByTag(activeFragmentTag);
        // Don't switch fragment if already active
        if (activeFragment.getClass().equals(fragment.getClass())) {
            return;
        }
        //clear all except lowest
        FragmentManager.BackStackEntry first = manager.getBackStackEntryAt(0);
        manager.popBackStackImmediate(first.getId(), FragmentManager.POP_BACK_STACK_INCLUSIVE);
    }
    FragmentTransaction transaction = fragmentManager.beginTransaction()
            .setCustomAnimations(transition1, transition2).replace(R.id.content_frame, fragment, tag);
    if (fragment.getClass() != VaultsListFragment.class) {
        transaction = transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN).addToBackStack(tag);
    }
    transaction.commit();
}

From source file:org.dmfs.android.microfragments.transitions.BackWithResultTransition.java

@Override
public void prepare(@NonNull Context context, @NonNull FragmentManager fragmentManager,
        @NonNull MicroFragmentHost host, @NonNull MicroFragment<?> previousStep) {
    fragmentManager.popBackStackImmediate();
    // make sure we also skip all skipable steps.
    if (fragmentManager.getBackStackEntryCount() > 0 && "skip".equals(
            fragmentManager.getBackStackEntryAt(fragmentManager.getBackStackEntryCount() - 1).getName())) {
        fragmentManager.popBackStackImmediate("skip", FragmentManager.POP_BACK_STACK_INCLUSIVE);
    }//from  w  w w.  j  a va  2 s .  c  o  m
}

From source file:org.gnucash.android.ui.transactions.TransactionsActivity.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(findViewById(android.R.id.content).getWindowToken(), 0);
        FragmentManager fm = getSupportFragmentManager();
        if (fm.getBackStackEntryCount() > 0) {
            fm.popBackStack();//from  w w w .jav  a 2  s .  c  om
        } else {
            Intent accountsActivityIntent = new Intent(this, AccountsActivity.class);
            accountsActivityIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            accountsActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(accountsActivityIntent);
            finish();
        }
        return true;

    default:
        return false;
    }
}

From source file:com.afayear.android.client.activity.DualPaneActivity.java

@Override
public void onBackStackChanged() {
    if (isDualPaneMode()) {
        final FragmentManager fm = getSupportFragmentManager();
        final int count = fm.getBackStackEntryCount();
        final Fragment left_pane_fragment = fm.findFragmentById(PANE_LEFT);
        final Fragment right_pane_fragment = fm.findFragmentById(PANE_RIGHT);
        final View main_view = findViewById(R.id.main);
        final boolean left_pane_used = left_pane_fragment != null && left_pane_fragment.isAdded();
        final boolean right_pane_used = right_pane_fragment != null && right_pane_fragment.isAdded();
        if (count > 0) {
            final BackStackEntry entry = fm.getBackStackEntryAt(count - 1);
            if (entry == null)
                return;
            final Fragment fragment = BackStackEntryTrojan.getFragmentInBackStackRecord(entry);
            if (fragment instanceof Panes.Right) {
                showRightPane();/*from   w ww  . j a va  2s  .c  o m*/
            } else if (fragment instanceof Panes.Left) {
                showLeftPane();
            }
        } else {
            if (fm.findFragmentById(R.id.main) != null || left_pane_used) {
                showLeftPane();
            } else if (right_pane_used) {
                showRightPane();
            }
        }
        if (main_view != null) {
            final int visibility = left_pane_used ? View.GONE : View.VISIBLE;
            // Visibility changed, so start animation.
            if (main_view.getVisibility() != visibility) {
                final Animation anim = AnimationUtils.loadAnimation(this,
                        left_pane_used ? android.R.anim.fade_out : android.R.anim.fade_in);
                main_view.startAnimation(anim);
            }
            main_view.setVisibility(visibility);
        }
    }
}

From source file:de.fahrgemeinschaft.BaseActivity.java

@Override
public void onBackStackChanged() {
    FragmentManager fm = getSupportFragmentManager();
    int backstack = fm.getBackStackEntryCount();
    if (fm.getBackStackEntryCount() == 0) {
        setTitle("");
    } else {/*from w w  w .ja  v  a2s .  c  o  m*/
        setTitle(fm.getBackStackEntryAt(backstack - 1).getName());
    }
}

From source file:de.fahrgemeinschaft.BaseActivity.java

protected void showFragment(Fragment f, String name, int in, int out) {
    setTitle(name);/* w  ww . j  ava 2 s. com*/
    FragmentManager fm = getSupportFragmentManager();
    for (int i = fm.getBackStackEntryCount() - 1; i >= 0; i--) {
        if (fm.getBackStackEntryAt(i).getName().equals(name)) {
            for (int j = fm.getBackStackEntryCount() - 1; j > i; j--) {
                fm.popBackStackImmediate();
            }
            return;
        }
    }
    fm.beginTransaction().setCustomAnimations(in, R.anim.do_nix, R.anim.do_nix, out)
            .add(R.id.container, f, name).addToBackStack(name).commit();
}

From source file:com.audiokernel.euphonyrmt.library.SimpleLibraryActivity.java

private void refreshTitleFromCurrentFragment() {
    final FragmentManager supportFM = getSupportFragmentManager();
    final int fmStackCount = supportFM.getBackStackEntryCount();

    if (fmStackCount > 0) {
        setTitle(supportFM.getBackStackEntryAt(fmStackCount - 1).getBreadCrumbTitle());
    } else {/*from   ww w  .  java 2s .  c o m*/
        final Fragment displayedFragment = getSupportFragmentManager().findFragmentById(R.id.root_frame);
        if (displayedFragment instanceof BrowseFragment) {
            setTitle(((BrowseFragment) displayedFragment).getTitle());
        } else {
            setTitle(displayedFragment.toString());
        }
    }
}

From source file:org.openhab.habdroid.ui.AboutActivity.java

private void updateTitle() {
    FragmentManager fm = getSupportFragmentManager();
    int count = fm.getBackStackEntryCount();
    @StringRes/*  ww w  .j  a  v  a 2s .c  o  m*/
    int titleResId = count > 0 ? fm.getBackStackEntryAt(count - 1).getBreadCrumbTitleRes()
            : R.string.about_title;
    setTitle(titleResId);
}

From source file:org.mariotaku.twidere.activity.support.DualPaneActivity.java

@Override
public void onBackStackChanged() {
    if (!isDualPaneMode())
        return;//www  .  ja  v a 2  s. c  o  m
    final FragmentManager fm = getSupportFragmentManager();
    final int count = fm.getBackStackEntryCount();
    final Fragment leftPaneFragment = fm.findFragmentById(PANE_LEFT);
    final Fragment rightPaneFragment = fm.findFragmentById(PANE_RIGHT);
    final boolean leftPaneUsed = leftPaneFragment != null && leftPaneFragment.isAdded();
    final boolean rightPaneUsed = rightPaneFragment != null && rightPaneFragment.isAdded();
    if (count > 0) {
        final BackStackEntry entry = fm.getBackStackEntryAt(count - 1);
        if (entry == null)
            return;
        final Fragment fragment = BackStackEntryTrojan.getFragmentInBackStackRecord(entry);
        if (fragment instanceof Panes.Right) {
            showRightPane();
        } else if (fragment instanceof Panes.Left) {
            showLeftPane();
        }
    } else {
        if (fm.findFragmentById(getMainViewId()) != null || leftPaneUsed) {
            showLeftPane();
        } else if (rightPaneUsed) {
            showRightPane();
        }
    }
    updateMainViewVisibility();
}