Java FragmentManager.findFragmentByTag方法代码示例

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
public static void showRefreshDurationDialog(FragmentManager fm, int rotateTime, boolean isMinute) {
    FragmentTransaction ft = fm.beginTransaction();
    Fragment prev = fm.findFragmentByTag(TAG);
    if (prev != null) {
        ft.remove(prev);
    }

    ft.add(newInstance(rotateTime, isMinute), TAG)
            .setTransitionStyle(FragmentTransaction.TRANSIT_FRAGMENT_FADE);

    try {
        ft.commit();
    } catch (IllegalStateException e) {
        ft.commitAllowingStateLoss();
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
private void executeDebouncePop(FragmentManager fm) {
    Fragment popF = fm.findFragmentByTag(fm.getBackStackEntryAt(fm.getBackStackEntryCount() - 1).getName());
    if (popF instanceof ISupportFragment) {
        ISupportFragment supportF = (ISupportFragment) popF;
        if (supportF.getSupportDelegate().mIsSharedElement) {
            long now = System.currentTimeMillis();
            if (now < mShareElementDebounceTime) {
                mShareElementDebounceTime = System.currentTimeMillis() + supportF.getSupportDelegate().mAnimHelper.exitAnim.getDuration();
                return;
            }
        }
        mShareElementDebounceTime = System.currentTimeMillis() + supportF.getSupportDelegate().mAnimHelper.exitAnim.getDuration();
    }

    fm.popBackStack();
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
@Override
public void onBackPressed() {
    FragmentManager supportFragmentManager = view.getMainActivity().getSupportFragmentManager();
    Fragment fragment = supportFragmentManager.findFragmentByTag(TYPE_LIST_TAG);
    if (listFragment == null && collectionFragment != null && !collectionFragment.isHidden()) {
        view.setToolBar();
        supportFragmentManager.beginTransaction().remove(collectionFragment).commit();
        onMainDestroy();
        return;
    }
    if (fragment != null && fragment.isHidden()) {
        setSelectFragment(TYPE_LIST_TAG);
    } else {
        view.onBack();
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
@Override
public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	final ActionBar actionbar = getSupportActionBar();
	actionbar.setDisplayHomeAsUpEnabled(true);
	actionbar.setHomeButtonEnabled(true);
	actionbar.setTitle(getIntent().getExtras().getString(
			Constants.PARAM_NAME));

	final FragmentManager fm = getSupportFragmentManager();
	Fragment f = fm.findFragmentByTag(GraphFragment.TAG);
	final FragmentTransaction ft = fm.beginTransaction();
	if (f == null) {
		f = GraphFragment.newInstance();
		f.setArguments(getIntent().getExtras());
		ft.add(android.R.id.content, f, GraphFragment.TAG);
	} else {
		ft.attach(f);
	}
	ft.commit();
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
@TargetApi(17)
private void showAlipayDialog(boolean notOpenFlag) {
    FragmentManager fm = getSupportFragmentManager();
    if (fm != null && getActivity() != null && !getActivity().isDestroyed()) {
        FragmentTransaction ft = fm.beginTransaction();
        this.mAlipayAutoPayDialog = (AlipayAutoPayDialog) fm.findFragmentByTag("showmAlipayPayDialog");
        Bundle bundle = new Bundle();
        bundle.putBoolean(AlipayConstant.NOT_OPEN_CONTINUE_MONTHLY, notOpenFlag);
        bundle.putBoolean(AlipayConstant.IS_MOBILE_VIP_FLAG, this.mIsMobileVipFlag);
        if (this.mAlipayAutoPayDialog == null) {
            this.mAlipayAutoPayDialog = new AlipayAutoPayDialog();
        } else {
            ft.remove(this.mAlipayAutoPayDialog);
        }
        this.mAlipayAutoPayDialog.setAlipayConfirmCallback(this);
        if (this.mAlipayAutoPayDialog.getArguments() == null) {
            this.mAlipayAutoPayDialog.setArguments(bundle);
        }
        ft.add(this.mAlipayAutoPayDialog, "showmAlipayPayDialog");
        ft.commitAllowingStateLoss();
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
/**
 * 显示内存重启后的恢复的Fragment
 */
private void getRestoreFragment() {
    mFragmentList = new ArrayList<>();
    FragmentManager fm = getSupportFragmentManager();
    if (fm.findFragmentByTag(HomeFragment.TAG_HOME) == null) {
        mFragmentList.add(HomeFragment.newInstance());
    } else {
        mFragmentList.add((HomeFragment) fm.findFragmentByTag(HomeFragment.TAG_HOME));
    }
    if (fm.findFragmentByTag(CategoryFragment.TAG_CATEGORY) == null) {
        mFragmentList.add(CategoryFragment.newInstance());
    } else {
        mFragmentList.add((CategoryFragment) fm.findFragmentByTag(CategoryFragment.TAG_CATEGORY));
    }
    if (fm.findFragmentByTag(CartFragment.TAG_CART) == null) {
        mFragmentList.add(CartFragment.newInstance());
    } else {
        mFragmentList.add((CartFragment) fm.findFragmentByTag(CartFragment.TAG_CART));
    }
    if (fm.findFragmentByTag(MineFragment.TAG_MINE) == null) {
        mFragmentList.add(MineFragment.newInstance());
    } else {
        mFragmentList.add((MineFragment) fm.findFragmentByTag(MineFragment.TAG_MINE));
    }

}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
private void initContainers() {
    FragmentManager fm = getSupportFragmentManager();
    usersTabFragment = (TabContainerFragment) fm.findFragmentByTag(Screens.USERS_TAB);
    if (usersTabFragment == null) {
        usersTabFragment = TabContainerFragment.newInstance(Screens.USERS_TAB);
        fm.beginTransaction()
                .add(R.id.master_frame, usersTabFragment, Screens.USERS_TAB)
                .detach(usersTabFragment).commitNow();
    }

    placesTabFragment = (TabContainerFragment) fm.findFragmentByTag(Screens.PLACES_TAB);
    if (placesTabFragment == null) {
        placesTabFragment = TabContainerFragment.newInstance(Screens.PLACES_TAB);
        fm.beginTransaction()
                .add(R.id.master_frame, placesTabFragment, Screens.PLACES_TAB)
                .detach(placesTabFragment).commitNow();
    }

    favoritesTabFragment = (TabContainerFragment) fm.findFragmentByTag(Screens.FAVORITES_TAB);
    if (favoritesTabFragment == null) {
        favoritesTabFragment = TabContainerFragment.newInstance(Screens.FAVORITES_TAB);
        fm.beginTransaction()
                .add(R.id.master_frame, favoritesTabFragment, Screens.FAVORITES_TAB)
                .detach(favoritesTabFragment).commitNow();
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
/**
 * Get instance of RxSmartLockPasswordsFragment
 *
 * @return a RxSmartLockPasswordsFragment
 */
private RxSmartLockPasswordsFragment getRxFacebookAuthFragment(Builder builder) {
    FragmentManager fragmentManager = mActivity.getSupportFragmentManager();

    // prevent fragment manager already executing transaction
    int stackCount = fragmentManager.getBackStackEntryCount();
    if( fragmentManager.getFragments() != null )
        fragmentManager = fragmentManager.getFragments().get( stackCount > 0 ? stackCount-1 : stackCount ).getChildFragmentManager();

    RxSmartLockPasswordsFragment rxSmartLockPasswordsFragment = (RxSmartLockPasswordsFragment)
            fragmentManager.findFragmentByTag(RxSmartLockPasswordsFragment.TAG);

    if (rxSmartLockPasswordsFragment == null) {
        rxSmartLockPasswordsFragment = RxSmartLockPasswordsFragment.newInstance(builder);
        fragmentManager
                .beginTransaction()
                .add(rxSmartLockPasswordsFragment, RxSmartLockPasswordsFragment.TAG)
                .commit();
        fragmentManager.executePendingTransactions();
    }
    return rxSmartLockPasswordsFragment;
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
public void dismissDialog() {
    final FragmentManager fm = getFragmentManager();
    if (fm == null)
        return;
    Fragment prev = fm.findFragmentByTag("cadfragment");
    if (prev != null) {
        DialogFragment df = (DialogFragment) prev;
        df.dismiss();
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
public static String getDisplayedQuery(FragmentManager fragmentManager) {
    Fragment qf = fragmentManager.findFragmentByTag(SearchFragment.FRAGMENT_TAG);
    Fragment af = fragmentManager.findFragmentByTag(AgendaFragment.FRAGMENT_TAG);

    if (qf != null && qf.isVisible()) {
        return ((SearchFragment) qf).getQuery();

    } else if (af != null && af.isVisible()) {
        return ((AgendaFragment) af).getQuery();
    }

    return null;
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
private static HolderFragment findHolderFragment(FragmentManager manager) {
    if (manager.isDestroyed()) {
        throw new IllegalStateException("Can't access LifecycleModels from onDestroy");
    }

    Fragment fragmentByTag = manager.findFragmentByTag(HOLDER_TAG);
    if (fragmentByTag != null && !(fragmentByTag instanceof HolderFragment)) {
        throw new IllegalStateException("Unexpected "
                + "fragment instance was returned by HOLDER_TAG");
    }
    return (HolderFragment) fragmentByTag;
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
/**
 * find Fragment from FragmentStack
 */
@SuppressWarnings("unchecked")
<T extends SupportFragment> T findStackFragment(Class<T> fragmentClass, String toFragmentTag, FragmentManager fragmentManager) {
    fragmentManager = checkFragmentManager(fragmentManager, null);
    if (fragmentManager == null) return null;

    Fragment fragment = null;

    if (toFragmentTag == null) {
        // 如果是 查找Fragment时,则有可能是在FragmentPagerAdapter,这种情况下,
        // 它们的Tag是以android:switcher开头,所以这里我们使用下面的方式
        List<Fragment> fragmentList = fragmentManager.getFragments();
        if (fragmentList == null) return null;

        int sizeChildFrgList = fragmentList.size();

        for (int i = sizeChildFrgList - 1; i >= 0; i--) {
            Fragment brotherFragment = fragmentList.get(i);
            if (brotherFragment instanceof SupportFragment && brotherFragment.getClass().getName().equals(fragmentClass.getName())) {
                fragment = brotherFragment;
                break;
            }
        }
    } else {
        fragment = fragmentManager.findFragmentByTag(toFragmentTag);
    }

    if (fragment == null) {
        return null;
    }
    return (T) fragment;
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
@Override
public void onBackPressed() {
    FragmentManager fragmentManager = getSupportFragmentManager();
    Fragment fragment = fragmentManager.findFragmentByTag(AboutFragment.TAG);
    if (fragment == null) {
        super.onBackPressed();
    } else {
        onFragmentDetached(AboutFragment.TAG);
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
private void showHomeList() {
    FragmentManager fragmentManager = getSupportFragmentManager();
    Fragment homeListFragment = fragmentManager.findFragmentByTag(HomeListFragment.TAG);
    if (homeListFragment == null) {
        fragmentManager.beginTransaction()
                .add(R.id.main_content, new HomeListFragment(), HomeListFragment.TAG)
                .commit();
    }
}
 

import android.support.v4.app.FragmentManager; //导入方法依赖的package包/类
/**
 * Removes the fragment with the given tag.
 *
 * @param fragmentManager A fragment manager which manages the fragment removal.
 * @param tag             A tag of the fragment that must be removed.
 */
@SuppressWarnings("WeakerAccess")
public static void removeSupportFragment(@NonNull final FragmentManager fragmentManager,
                                         @NonNull final String tag) {
    final Fragment fragment = fragmentManager.findFragmentByTag(tag);
    if (fragment != null) {
        fragmentManager.beginTransaction().remove(fragment).commitAllowingStateLoss();
    }
}