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:r2b.apps.view.base.BaseActivity.java

/***
 * Clear the back stack to its initial state.
 * Normally with the first fragment setted when activity is created firstly.
 *//*from   w w w  .ja  va2 s  .  co m*/
public void clearBackStack() {
    android.support.v4.app.FragmentManager fragmentManager = getSupportFragmentManager();

    while (fragmentManager.getBackStackEntryCount() > INITIAL_BACK_STACK_SIZE) {
        // If you use popBackStack you probably setup an infinite loop.
        fragmentManager.popBackStackImmediate();
    }

}

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

@NonNull
@Override/*from w  ww.  j av  a2  s. c o m*/
public FragmentTransaction updateTransaction(@NonNull Context context,
        @NonNull FragmentTransaction fragmentTransaction, @NonNull FragmentManager fragmentManager,
        @NonNull MicroFragmentHost host, @NonNull MicroFragment<?> previousStep) {
    Fragment fragment = mNextStep.fragment(context, host);
    Bundle args = new Bundle(1);
    args.putParcelable(ARG_ENVIRONMENT, new BasicMicroFragmentEnvironment<>(mNextStep, host));
    fragment.setArguments(args);

    fragmentTransaction.add(R.id.microfragments_host, fragment);
    if (fragmentManager.getBackStackEntryCount() > 0 || !previousStep.skipOnBack()) {
        fragmentTransaction.addToBackStack(mNextStep.skipOnBack() ? "skip" : "noskip");
    }
    return fragmentTransaction;
}

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

@NonNull
@Override//w ww  . j  a v  a  2s  . c o  m
public FragmentTransaction updateTransaction(@NonNull Context context,
        @NonNull FragmentTransaction fragmentTransaction, @NonNull FragmentManager fragmentManager,
        @NonNull MicroFragmentHost host, @NonNull MicroFragment<?> previousStep) {
    Fragment fragment = mNextStep.fragment(context, host);

    Bundle args = new Bundle(1);
    args.putParcelable(ARG_ENVIRONMENT, new BasicMicroFragmentEnvironment<>(mNextStep, host));
    fragment.setArguments(args);

    fragmentTransaction.replace(R.id.microfragments_host, fragment);
    if (fragmentManager.getBackStackEntryCount() > 0 || !previousStep.skipOnBack()) {
        fragmentTransaction.addToBackStack(mNextStep.skipOnBack() ? "skip" : "noskip");
    }
    return fragmentTransaction;
}

---

From source file:com.LMO.capstone.KnoWITHerbalMain.java

@Override
public void onBackPressed() {
    // TODO Auto-generated method stub
    long currentTime = System.currentTimeMillis();
    FragmentManager fm = getSupportFragmentManager();
    if (fm.getBackStackEntryCount() == 0) {
        if ((currentTime - lastPress) > 3000) {
            Toast.makeText(this, "Press back again to exit", Toast.LENGTH_LONG).show();
            lastPress = currentTime;/*from   w  ww .  ja v  a  2s  . c  o  m*/
        } else {
            super.onBackPressed();
        }
    } else {
        super.onBackPressed();
    }

}

---

From source file:com.dwdesign.tweetings.activity.LinkHandlerActivity.java

@Override
public boolean onOptionsItemSelected(final MenuItem item) {
    switch (item.getItemId()) {
    case MENU_HOME: {
        final FragmentManager fm = getSupportFragmentManager();
        if (isDualPaneMode()) {
            final int count = fm.getBackStackEntryCount();
            if (count == 0) {
                onBackPressed();/* w w w .  ja  va  2 s.  c o  m*/
            } else if (!FragmentManagerTrojan.isStateSaved(fm)) {
                for (int i = 0; i < count; i++) {
                    fm.popBackStackImmediate();
                }
                setSupportProgressBarIndeterminateVisibility(false);
            }
        } else {
            onBackPressed();
        }
        break;
    }
    }
    return super.onOptionsItemSelected(item);
}

---

From source file:com.projeto_les.easymeal.MainActivity.java

@Override
public void onBackPressed() {
    int fragments = getSupportFragmentManager().getBackStackEntryCount();
    if (fragments == 1) {
        finish();//from  ww w  . j a  va 2  s .c  om
        return;
    }

    FragmentManager fragmentManager = getSupportFragmentManager();
    String fragmentTag = fragmentManager.getBackStackEntryAt(fragmentManager.getBackStackEntryCount() - 1)
            .getName();

    if (fragmentTag.equals(SelectIngredientsFragment.TAG)) {
        //selectIngredientsFragment.updateView();
        clearSearch(true);
    }

    super.onBackPressed();
}

---

From source file:com.munger.passwordkeeper.MainActivity.java

/**
 * Handle the behaviour of the back button.
 *///w ww  .  j a v  a2  s. c o  m
@Override
public void onBackPressed() {
    FragmentManager mgr = getSupportFragmentManager();
    int cnt = mgr.getBackStackEntryCount();

    if (cnt > 0) {
        BackStackEntry entry = mgr.getBackStackEntryAt(cnt - 1);
        String name = entry.getName();

        //warn any fragments that care that the back button has been pressed.
        //if they return true then cancel the back button action
        boolean keepGoing = true;

        if (name.equals(ViewDetailFragment.getName())) {
            keepGoing = viewDetailFragment.backPressed();
        }

        if (!keepGoing)
            return;

        //reset the view every time a fragment is popped off the stack
        super.onBackPressed();
        invalidateOptionsMenu();
        setEditable(false);
    }
}

---

From source file:net.peterkuterna.android.apps.devoxxfrsched.ui.HomeActivity.java

@Override
public void onBeforeCommitReplaceFragment(FragmentManager fm, FragmentTransaction ft, Fragment fragment) {
    super.onBeforeCommitReplaceFragment(fm, ft, fragment);
    if (fragment instanceof SessionsFragment) {
        mPauseBackStackWatcher = true;// w  w w . j av a 2 s  . co m
        if (fm.getBackStackEntryCount() > 0) {
            fm.popBackStackImmediate();
        }
        mPauseBackStackWatcher = false;
        ft.addToBackStack(null);
    } else if (fragment instanceof SessionDetailFragment) {
        mPauseBackStackWatcher = true;
        if (fm.getBackStackEntryCount() > 0) {
            fm.popBackStackImmediate();
        }
        mPauseBackStackWatcher = false;
        ft.addToBackStack(null);
    }
}

---

From source file:com.cnm.cnmrc.fragment.vodtvch.VodTvch.java

/**
 * ? ? ?  fragment VodTvch ?? loadingDataForSidrebar()? no addToBackStack ??.
 * ? MainActivity onBackPressed()? back key ?.
 * ? VodTvch fragment addToBackStack ?? ?,  ?? Base back key . 
 * back key?   ??... Base? destoryView()?  ? ?.
 * no addToBackStack(null)//from  w  w  w .  jav a  2s.c om
 * ft.replace(R.id.loading_data_panel, base)
 */
private void loadingDataForSidrebar() {
    FragmentManager fm = getActivity().getSupportFragmentManager();
    Log.i("hwang", "before vodTvch fragment count (no add to stack) --> "
            + Integer.toString(fm.getBackStackEntryCount()));

    FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
    Class<?> classObject;
    try {
        String packageName = this.getClass().getPackage().getName() + ".";
        classObject = Class.forName(packageName + mClassTypeArray[selectedCategory]); // CommonList, VodSemiDetail, VodDetail, TvchSemiDetail, TvchDetail
        Object obj = classObject.newInstance();

        Base base = ((Base) obj).newInstance(mCategoryArray[selectedCategory], true); // true : 1 depth (vod:VodSemiDetail, VodSemiDetail, VodSemiDetail, VodList)
        // true : 1 depth (tvch: TvchSemiDetail, TvchList, TvchSemiDetail, TvchSemiDetail)

        //ft.addToBackStack(null);   // addTBackStack  onBackPressed() ? ?... remove fragment onDestroyView() ?.
        ft.replace(R.id.loading_data_panel, base);
        ft.commit();
        //fm.executePendingTransactions();   // fragment? ? pending recursive error,  ?? pending .
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (java.lang.InstantiationException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }

    Log.i("hwang", "after vodTvch fragment count (no add to stack) --> "
            + Integer.toString(fm.getBackStackEntryCount()));

    // ------------------------------------
    // ? bottom menu? depth level 
    // ------------------------------------
    Fragment f = getActivity().getSupportFragmentManager().findFragmentById(R.id.fragment_rc_bottom_menu);
    if (f != null)
        ((RcBottomMenu) f).setDepthLevelClear(); // set 1 depth
}

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From source file:com.google.plus.wigwamnow.MainActivity.java

/**
 * Callback when the state of the Facebook Session changes.
 *
 * @param session the session which changed.
 * @param state the current state of the session.
 * @param exception any exception which occurred.
 *///  w ww .j av  a2s. com
private void onSessionStateChange(Session session, SessionState state, Exception exception) {
    // Only make changes if the activity is visible
    if (mIsResumed) {
        FragmentManager manager = getSupportFragmentManager();
        // Get the number of entries in the back stack
        int backStackSize = manager.getBackStackEntryCount();
        // Clear the back stack
        for (int i = 0; i < backStackSize; i++) {
            manager.popBackStack();
        }
        if (state.isOpened()) {
            // Send the authorization information to the web server
            sendFbTokenToServer();
            // Show the authenticated fragment
            showFragment(SELECTION, false);
        } else if (state.isClosed()) {
            // Show the login fragment
            saveProvider(SocialProviderConstants.NONE);
            showFragment(SPLASH, false);
        }
    }
}

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