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:uk.co.nevarneyok.ux.MainActivity.java

/**
 * Method clear fragment backStack (back history). On bottom of stack will remain Fragment added by {@link #addInitialFragment()}.
 *///from   w  ww  .  j  av  a  2s. c  om
private void clearBackStack() {
    Timber.d("Clearing backStack");
    FragmentManager manager = getSupportFragmentManager();
    if (manager.getBackStackEntryCount() > 0) {
        if (BuildConfig.DEBUG) {
            for (int i = 0; i < manager.getBackStackEntryCount(); i++) {
                Timber.d("BackStack content_%d= id: %d, name: %s", i, manager.getBackStackEntryAt(i).getId(),
                        manager.getBackStackEntryAt(i).getName());
            }
        }
        FragmentManager.BackStackEntry first = manager.getBackStackEntryAt(0);
        manager.popBackStackImmediate(first.getId(), FragmentManager.POP_BACK_STACK_INCLUSIVE);
    }
    Timber.d("backStack cleared.");
    //        TODO maybe implement own fragment backStack handling to prevent banner fragment recreation during clearing.
    //        http://stackoverflow.com/questions/12529499/problems-with-android-fragment-back-stack<
}

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From source file:com.andryr.musicplayer.MainActivity.java

@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();
    switch (id) {
    case android.R.id.home:
        FragmentManager fm = getSupportFragmentManager();
        if (fm.getBackStackEntryCount() > 0) {
            fm.popBackStack();/*from w w w.jav  a  2  s.  co m*/
        } else {
            showLibrary();
        }
        return true;
    case R.id.action_search:
        NavigationUtils.showSearchActivity(this, SEARCH_ACTIVITY);
        return true;
    case R.id.action_equalizer:
        NavigationUtils.showEqualizer(this);
        return true;
    case R.id.action_preferences:
        NavigationUtils.showPreferencesActivity(this);
        break;
    case R.id.action_sleep_timer:
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        if (SleepTimer.isTimerSet(prefs)) {
            DialogUtils.showSleepTimerDialog(this, mSleepTimerDialogListener);
        } else {
            DialogUtils.showSleepHmsPicker(this, mHmsPickerHandler);
        }
        break;
    }
    return super.onOptionsItemSelected(item);
}

---

From source file:com.example.android.networkconnect.MainActivity.java

@Override
public void onBackPressed() {

    Log.i("ActivityInTab", "onBackPressed");

    FragmentManager manager = getSupportFragmentManager();
    if (manager.getBackStackEntryCount() > 1) {
        super.onBackPressed();
    } else {//from  www  .  j  a v a2s. c  o  m
        super.onBackPressed();
    }
}

---

From source file:cn.edu.zafu.corepage.base.BaseActivity.java

/**
 * fragment// w  w w.  j ava  2  s.  c om
 * @param pageName page??
 * @return ?Fragment
 */
@Override
public boolean findPage(String pageName) {
    int size = mActivities.size();
    int j = size - 1;
    boolean hasFind = false;
    for (; j >= 0; j--) {
        WeakReference<BaseActivity> ref = mActivities.get(j);
        if (ref != null) {
            BaseActivity item = ref.get();
            if (item == null) {
                Log.d(TAG, "item is null");
                continue;
            }
            FragmentManager manager = item.getSupportFragmentManager();
            int count = manager.getBackStackEntryCount();
            for (int i = count - 1; i >= 0; i--) {
                String name = manager.getBackStackEntryAt(i).getName();
                if (name.equalsIgnoreCase(pageName)) {
                    hasFind = true;
                    break;
                }
            }
            if (hasFind) {
                break;
            }
        }
    }
    return hasFind;
}

---

From source file:cn.edu.zafu.corepage.base.BaseActivity.java

/**
 * ?fragmnet/*from  w  w  w .ja  v a  2  s. c o m*/
 *
 * @return ?Fragment
 */
public BaseFragment getActiveFragment() {
    if (this.isFinishing()) {
        return null;
    }
    FragmentManager manager = this.getSupportFragmentManager();
    if (manager != null) {
        int count = manager.getBackStackEntryCount();
        if (count > 0) {
            String tag = manager.getBackStackEntryAt(count - 1).getName();
            return (BaseFragment) manager.findFragmentByTag(tag);
        }
    }
    return null;
}

---

From source file:cn.edu.zafu.corepage.base.BaseActivity.java

/**
 * ??/*from  ww w . j  a  va 2s  .c o m*/
 * @param fragmentTag fragmenttag
 * @return Fragment??
 */
@Override
public boolean isFragmentTop(String fragmentTag) {
    int size = mActivities.size();
    if (size > 0) {
        WeakReference<BaseActivity> ref = mActivities.get(size - 1);
        BaseActivity item = ref.get();
        if (item != null && item == this) {
            FragmentActivity activity = item;
            FragmentManager manager = activity.getSupportFragmentManager();
            if (manager != null) {
                int count = manager.getBackStackEntryCount();
                if (count >= 1) {
                    FragmentManager.BackStackEntry entry = manager.getBackStackEntryAt(count - 1);
                    if (entry.getName().equalsIgnoreCase(fragmentTag)) {
                        return true;
                    }
                }
            }
        }
    }
    return false;
}

---

From source file:ru.orangesoftware.financisto.activity.MainActivity.java

@Override
public void onBackPressed() {
    FragmentManager fragmentManager = getSupportFragmentManager();
    if (fragmentManager.getBackStackEntryCount() > 1) {
        fragmentManager.popBackStack();//ww w. j a v a2s. co m
        mDrawerLayout.closeDrawers();
    } else {
        finishAfterTransition();
    }
}

---

From source file:org.gateshipone.malp.application.activities.MainActivity.java

@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.

    FragmentManager fragmentManager = getSupportFragmentManager();

    switch (item.getItemId()) {
    case android.R.id.home:
        if (fragmentManager.getBackStackEntryCount() > 0) {
            onBackPressed();/*from   ww  w  . ja v a  2s .  co  m*/
        } else {
            // back stack empty so enable navigation drawer

            mDrawerToggle.setDrawerIndicatorEnabled(true);

            if (mDrawerToggle.onOptionsItemSelected(item)) {
                return true;
            }
        }
    }

    return super.onOptionsItemSelected(item);
}

---

From source file:org.wikipedia.gallery.GalleryActivity.java

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

    setContentView(R.layout.activity_gallery);
    initToolbar();/*from   w  w w  . j ava  2s. c  o  m*/

    toolbarContainer = findViewById(R.id.gallery_toolbar_container);
    infoContainer = findViewById(R.id.gallery_info_container);
    setBackgroundGradient(infoContainer, Gravity.BOTTOM);

    progressBar = findViewById(R.id.gallery_progressbar);

    descriptionText = findViewById(R.id.gallery_description_text);
    descriptionText.setShadowLayer(2, 1, 1, color(R.color.black54));
    descriptionText.setMovementMethod(linkMovementMethod);

    licenseIcon = findViewById(R.id.gallery_license_icon);
    licenseIcon.setOnClickListener(licenseShortClickListener);
    licenseIcon.setOnLongClickListener(licenseLongClickListener);

    creditText = findViewById(R.id.gallery_credit_text);
    creditText.setShadowLayer(2, 1, 1, color(R.color.black54));

    errorView = findViewById(R.id.view_gallery_error);
    ((ImageView) errorView.findViewById(R.id.view_wiki_error_icon)).setColorFilter(color(R.color.base70));
    ((TextView) errorView.findViewById(R.id.view_wiki_error_text)).setTextColor(color(R.color.base70));
    errorView.setBackClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            onBackPressed();
        }
    });
    errorView.setRetryClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            errorView.setVisibility(View.GONE);
            loadGalleryContent();
        }
    });

    if (getIntent().hasExtra(EXTRA_PAGETITLE)) {
        pageTitle = getIntent().getParcelableExtra(EXTRA_PAGETITLE);
    }
    initialFilename = getIntent().getStringExtra(EXTRA_FILENAME);
    wiki = getIntent().getParcelableExtra(EXTRA_WIKI);

    galleryCache = new HashMap<>();
    galleryAdapter = new GalleryItemAdapter(this);
    galleryPager = findViewById(R.id.gallery_item_pager);
    galleryPager.setAdapter(galleryAdapter);
    pageChangeListener = new GalleryPageChangeListener();
    galleryPager.addOnPageChangeListener(pageChangeListener);

    funnel = new GalleryFunnel(app, wiki, getIntent().getIntExtra(EXTRA_SOURCE, 0));

    if (savedInstanceState == null) {
        if (initialFilename != null) {
            funnel.logGalleryOpen(pageTitle, initialFilename);
        }
    } else {
        controlsShowing = savedInstanceState.getBoolean("controlsShowing");
        initialImageIndex = savedInstanceState.getInt("pagerIndex");
        // if we have a savedInstanceState, then the initial index overrides
        // the initial Title from our intent.
        initialFilename = null;

        FragmentManager fm = getSupportFragmentManager();
        if (getSupportFragmentManager().getBackStackEntryCount() > 0) {
            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
            for (int i = 0; i < fm.getBackStackEntryCount(); i++) {
                Fragment fragment = fm.findFragmentById(fm.getBackStackEntryAt(i).getId());
                if (fragment instanceof GalleryItemFragment) {
                    ft.remove(fragment);
                }
            }
            ft.commitAllowingStateLoss();
        }
    }
    toolbarContainer.post(new Runnable() {
        @Override
        public void run() {
            setControlsShowing(controlsShowing);
        }
    });
    loadGalleryContent();
}

---

From source file:gr.scify.newsum.ui.Facebook.java

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

    if ((getResources().getConfiguration().screenLayout
            & Configuration.SCREENLAYOUT_SIZE_MASK) != Configuration.SCREENLAYOUT_SIZE_NORMAL
            & (getResources().getConfiguration().screenLayout
                    & Configuration.SCREENLAYOUT_SIZE_MASK) != Configuration.SCREENLAYOUT_SIZE_SMALL) {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

    }/* w ww.j a va  2  s  .c om*/

    SharedPreferences userlang = getSharedPreferences("lang", 0);
    String newlang = userlang.getString("lang", Locale.getDefault().getLanguage());
    // Changed getApplicationContext() to "this"
    Setlanguage.updateLanguage(this, newlang);

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);

    if (savedInstanceState != null) {
        String name = savedInstanceState.getString(PENDING_ACTION_BUNDLE_KEY);
        pendingAction = PendingAction.valueOf(name);
    }

    setContentView(R.layout.facebook);

    Bundle extras = getIntent().getExtras();
    summaryF = extras.getString("summaryF");

    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setUserInfoChangedCallback(new LoginButton.UserInfoChangedCallback() {
        @Override
        public void onUserInfoFetched(GraphUser user) {
            Facebook.this.user = user;
            updateUI();
            // It's possible that we were waiting for this.user to be populated in order to post a
            // status update.
            handlePendingAction();
        }
    });

    profilePictureView = (ProfilePictureView) findViewById(R.id.profilePicture);
    greeting = (TextView) findViewById(R.id.greeting);

    postStatusUpdateButton = (Button) findViewById(R.id.postStatusUpdateButton);
    postStatusUpdateButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            onClickPostStatusUpdate();
        }
    });

    controlsContainer = (ViewGroup) findViewById(R.id.main_ui_container);

    final FragmentManager fm = getSupportFragmentManager();
    Fragment fragment = fm.findFragmentById(R.id.fragment_container);
    if (fragment != null) {
        // If we're being re-created and have a fragment, we need to a) hide the main UI controls and
        // b) hook up its listeners again.
        controlsContainer.setVisibility(View.GONE);
    }

    // Listen for changes in the back stack so we know if a fragment got popped off because the user
    // clicked the back button.
    fm.addOnBackStackChangedListener(new FragmentManager.OnBackStackChangedListener() {
        @Override
        public void onBackStackChanged() {
            if (fm.getBackStackEntryCount() == 0) {
                // We need to re-show our UI.
                controlsContainer.setVisibility(View.VISIBLE);
            }
        }
    });
}

---

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