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:com.recurly.androidsdk.BaseActivity.java

protected void popFragment() {
    FragmentManager fragmentManager = getSupportFragmentManager();

    int backStackEntryCount = fragmentManager.getBackStackEntryCount();

    if (backStackEntryCount >= 1) {
        // remove existing fragment
        fragmentManager.executePendingTransactions();

        FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
        BaseFragment currentFragment = (BaseFragment) fragmentManager
                .findFragmentByTag("" + fragmentManager.getBackStackEntryCount());

        BaseFragment nextFragment = (BaseFragment) fragmentManager
                .findFragmentByTag("" + (fragmentManager.getBackStackEntryCount() - 1));

        if (nextFragment == null) {
            // no more fragments, so exit
            finish();// w w  w .j a  v  a 2s .c  om
            return;
        }

        fragmentTransaction.remove(currentFragment);

        fragmentTransaction.show(nextFragment);

        fragmentManager.popBackStack();

        fragmentTransaction.commit();

    } else {
        // going to exit..
        super.onBackPressed();
    }
}

From source file:pl.edu.pw.eiti.groupbuying.android.ConfirmPaymentActivity.java

@Override
protected void onResumeFragments() {
    super.onResumeFragments();
    if (restoredFragment) {
        return;/*from ww  w. j a v  a  2s .  co  m*/
    }
    FragmentManager manager = getSupportFragmentManager();
    if (manager.getBackStackEntryCount() == 0) {
        showFragment(SUMMARY, false);
    }
}

From source file:com.mocap.MainActivity.java

@Override
public void onBackPressed() {

    FragmentManager manager = getSupportFragmentManager();
    if (manager.getBackStackEntryCount() > 1) {
        super.onBackPressed();
    } else {/*from w ww. j av  a2s  .  co m*/
        super.onBackPressed();
    }
}

From source file:com.blogspot.ksoichiro.android.sample.transition.test.NormalTransitionTest.java

public void testNormalTransition() {
    // Activity?// ww  w .  j ava2 s.  c om
    ActivityMonitor monitorMain = new ActivityMonitor(MainActivity.class.getCanonicalName(), null, false);
    ActivityMonitor monitorSecond = new ActivityMonitor(SecondActivity.class.getCanonicalName(), null, false);
    getInstrumentation().addMonitor(monitorMain);
    getInstrumentation().addMonitor(monitorSecond);

    // ??Fragment?BackStack??????
    FragmentActivity activity = (FragmentActivity) getActivity();
    FragmentManager fm = activity.getSupportFragmentManager();
    assertEquals(0, fm.getBackStackEntryCount());

    // ??Fragment?
    Fragment frag = fm.findFragmentByTag("tag");
    assertNotNull(frag);
    assertEquals(Fragment1.class, frag.getClass());

    // ??(Fragment)?
    TouchUtils.tapView(this, getActivity().findViewById(R.id.btnFrag1));
    getInstrumentation().waitForIdleSync();

    // BackStack?Fragment???(?)???
    assertEquals(1, fm.getBackStackEntryCount());

    // ??(Fragment)?????
    frag = fm.findFragmentByTag("tag");
    assertNotNull(frag);
    assertEquals(Fragment2.class, frag.getClass());

    // ??(Activity)?
    TouchUtils.tapView(this, getActivity().findViewById(R.id.btnFrag2));
    getInstrumentation().waitForMonitorWithTimeout(monitorSecond, 2000);

    // ?Activity???????
    assertEquals(1, monitorSecond.getHits());

    // ?
    sendKeys(KeyEvent.KEYCODE_BACK);
    getInstrumentation().waitForIdleSync();

    // ??(Activity)??????
    assertEquals(1, monitorMain.getHits());

    // ???Fragment?BackStack????????
    activity = (FragmentActivity) monitorMain.getLastActivity();
    fm = activity.getSupportFragmentManager();
    assertEquals(1, fm.getBackStackEntryCount());
    frag = fm.findFragmentByTag("tag");
    assertNotNull(frag);
    assertEquals(Fragment2.class, frag.getClass());

    // ?
    sendKeys(KeyEvent.KEYCODE_BACK);
    getInstrumentation().waitForIdleSync();

    // ???Fragment????BackStack?????????
    assertEquals(0, fm.getBackStackEntryCount());
    frag = fm.findFragmentByTag("tag");
    assertNotNull(frag);
    assertEquals(Fragment1.class, frag.getClass());
}

From source file:org.gnucash.android.ui.settings.PreferenceActivity.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            android.app.FragmentManager fm = getFragmentManager();
            if (fm.getBackStackEntryCount() > 0) {
                fm.popBackStack();//from   w  ww .  j  av a2s  .c  o  m
            } else {
                finish();
            }
        } else {
            finish();
        }
        return true;

    default:
        return false;
    }
}

From source file:com.example.snapcacheexample.MainActivity.java

private void onSessionStateChange(Session session, SessionState state, Exception exception) {
    if (isResumed) {
        FragmentManager manager = getSupportFragmentManager();
        int backStackSize = manager.getBackStackEntryCount();
        for (int i = 0; i < backStackSize; i++) {
            manager.popBackStack();/* w  w  w  .j a  va  2s. c  o m*/
        }
        // check for the OPENED state instead of session.isOpened() since for the
        // OPENED_TOKEN_UPDATED state, the selection fragment should already be showing.
        if (state.equals(SessionState.OPENED)) {
            showFragment(SELECTION, false);
        } else if (state.isClosed()) {
            showFragment(SPLASH, false);
        }
    }
}

From source file:us.bridgeses.minder_tasks.viewtranslators.TaskActivity.java

@Override
public void onBackPressed() {
    if (!presenter.onBackPressed()) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        if (fragmentManager.getBackStackEntryCount() != 0) {
            fragmentManager.popBackStack();
        } else {/*from w  w w.j  ava  2s. c  o m*/
            super.onBackPressed();
        }
    }
}

From source file:org.mariotaku.twidere.activity.SettingsActivity.java

void showFragment(final Fragment fragment) {
    final FragmentManager fm = getSupportFragmentManager();
    final int entry_count = fm.getBackStackEntryCount();
    final FragmentTransaction ft = fm.beginTransaction();
    for (int i = 0; i < entry_count; i++) {
        final int id = fm.getBackStackEntryAt(i).getId();
        ft.remove(fm.findFragmentById(id));
    }//from  w  w  w . j  av a  2s.c o m
    ft.commitAllowingStateLoss();
    showFragment(fragment, false);
}

From source file:io.github.waka.sevenhack.activities.MainActivity.java

@Override
public void onBackPressed() {
    if (binding.drawer.isDrawerOpen(GravityCompat.START)) {
        binding.drawer.closeDrawer(GravityCompat.START);
        return;/*from  www.j  av a 2 s. c o  m*/
    }
    FragmentManager fm = getSupportFragmentManager();
    if (fm.getBackStackEntryCount() > 0) {
        fm.popBackStack();
        return;
    }
    super.onBackPressed();
}

From source file:com.kyakujin.android.tagnotepad.ui.NoteActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    Intent intent = getIntent();//  www  .java  2 s  .c o  m
    String action = intent.getAction();
    // DBG
    //  FragmentManager.enableDebugLogging(true);
    //  Log.d("debug", "ActivityTest: onCreate start"); // DBG

    // ?????????NoteEditFragment??????
    if (Intent.ACTION_SEND.equals(action)) {
        Bundle extras = intent.getExtras();

        if (extras != null) {
            String extBody = extras.getString(Intent.EXTRA_TEXT);
            String extTitle = extras.getString(Intent.EXTRA_SUBJECT);
            Bundle bundle = new Bundle();
            if (extBody != null) {
                bundle.putString(Config.SHARED_BODY, extBody);
            }
            if (extTitle != null) {
                bundle.putString(Config.SHARED_TITLE, extTitle);
            }

            bundle.putInt("action", Config.ACTION_SENDED);
            Fragment fg = NoteEditFragment.newInstance();
            FragmentManager manager = getSupportFragmentManager();
            FragmentTransaction transaction = manager.beginTransaction();
            fg.setArguments(bundle);
            transaction.add(android.R.id.content, fg, Config.TAG_NOTEEDIT_FRAGM);
            transaction.commit();
        }
    } else {
        Fragment fg = NoteListFragment.newInstance();
        if (!fg.isAdded()) {
            // NoteListFragment?????
            FragmentManager fm = getSupportFragmentManager();
            for (int i = 0; i < fm.getBackStackEntryCount(); i++) {
                fm.popBackStack();
            }

            getSupportFragmentManager().beginTransaction()
                    .replace(android.R.id.content, fg, Config.TAG_NOTELIST_FRAGM).commit();
        }
    }

    handleIntent(getIntent());
}