Example usage for android.app LoaderManager restartLoader

Introduction

In this page you can find the example usage for android.app LoaderManager restartLoader.

Prototype

public abstract <D> Loader<D> restartLoader(int id, Bundle args, LoaderManager.LoaderCallbacks<D> callback);

Source Link

Document

Starts a new or restarts an existing android.content.Loader in this manager, registers the callbacks to it, and (if the activity/fragment is currently started) starts loading it.

Usage

From source file:com.google.samples.apps.iosched.ui.SessionDetailFragment.java

private void onFeedbackQueryComplete(Cursor cursor) {
    // Views have not been set up yet -- continue loading the rest of data
    if (mSubmitFeedbackView == null) {
        LoaderManager manager = getLoaderManager();
        manager.restartLoader(SessionsQuery._TOKEN, null, this);
        manager.restartLoader(SpeakersQuery._TOKEN, null, this);
        manager.restartLoader(TAG_METADATA_TOKEN, null, this);
    }//from   www .ja  v  a2s  . co  m

    // Is there existing feedback for this session?
    mAlreadyGaveFeedback = cursor.getCount() > 0;

    if (mAlreadyGaveFeedback) {
        final MessageCardView giveFeedbackCardView = (MessageCardView) mRootView
                .findViewById(R.id.give_feedback_card);
        if (giveFeedbackCardView != null) {
            giveFeedbackCardView.setVisibility(View.GONE);
        }
        if (mSubmitFeedbackView != null) {
            mSubmitFeedbackView.setVisibility(View.GONE);
        }
    }
    LOGD(TAG, "User " + (mAlreadyGaveFeedback ? "already gave" : "has not given") + " feedback for session.");
    cursor.close();
}

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From source file:com.android.browser.BookmarksPageCallbacks.java

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    if (loader.getId() == LOADER_ACCOUNTS) {
        LoaderManager lm = getLoaderManager();
        int id = LOADER_BOOKMARKS;
        while (cursor.moveToNext()) {
            String accountName = cursor.getString(0);
            String accountType = cursor.getString(1);
            Bundle args = new Bundle();
            args.putString(ACCOUNT_NAME, accountName);
            args.putString(ACCOUNT_TYPE, accountType);
            BrowserBookmarksAdapter adapter = new BrowserBookmarksAdapter(getActivity());
            mBookmarkAdapters.put(id, adapter);
            boolean expand = true;
            try {
                expand = mState.getBoolean(
                        accountName != null ? accountName : BookmarkExpandableView.LOCAL_ACCOUNT_NAME);
            } catch (JSONException e) {
            } // no state for accountName
            mGrid.addAccount(accountName, adapter, expand);
            lm.restartLoader(id, args, this);
            id++;/*from  ww w  .  j av  a 2  s.  c  om*/
        }
        // TODO: Figure out what a reload of these means
        // Currently, a reload is triggered whenever bookmarks change
        // This is less than ideal
        // It also causes UI flickering as a new adapter is created
        // instead of re-using an existing one when the account_name is the
        // same.
        // For now, this is a one-shot load
        getLoaderManager().destroyLoader(LOADER_ACCOUNTS);
    } else if (loader.getId() >= LOADER_BOOKMARKS) {
        BrowserBookmarksAdapter adapter = mBookmarkAdapters.get(loader.getId());
        adapter.changeCursor(cursor);
    }
}

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From source file:com.android.xbrowser.BookmarksPageCallbacks.java

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    if (loader.getId() == LOADER_ACCOUNTS) {
        LoaderManager lm = getLoaderManager();
        int id = LOADER_BOOKMARKS;
        while (cursor.moveToNext()) {
            String accountName = cursor.getString(0);
            String accountType = cursor.getString(1);
            Bundle args = new Bundle();
            args.putString(ACCOUNT_NAME, accountName);
            args.putString(ACCOUNT_TYPE, accountType);
            BrowserBookmarksAdapter adapter = new BrowserBookmarksAdapter(getActivity(), VIEW_THUMBNAILS);
            mBookmarkAdapters.put(id, adapter);
            boolean expand = true;
            try {
                expand = mState.getBoolean(
                        accountName != null ? accountName : BookmarkExpandableView.LOCAL_ACCOUNT_NAME);
            } catch (JSONException e) {
            } // no state for accountName
            mGrid.addAccount(accountName, adapter, expand);
            lm.restartLoader(id, args, this);
            id++;/*from  w ww. jav a  2  s .  c  om*/
        }
        // TODO: Figure out what a reload of these means
        // Currently, a reload is triggered whenever bookmarks change
        // This is less than ideal
        // It also causes UI flickering as a new adapter is created
        // instead of re-using an existing one when the account_name is the
        // same.
        // For now, this is a one-shot load
        getLoaderManager().destroyLoader(LOADER_ACCOUNTS);
    } else if (loader.getId() >= LOADER_BOOKMARKS) {
        BrowserBookmarksAdapter adapter = mBookmarkAdapters.get(loader.getId());
        adapter.changeCursor(cursor);
    }
}

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From source file:com.borqs.browser.combo.BookmarksPageCallbacks.java

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    if (loader.getId() == LOADER_ACCOUNTS) {
        LoaderManager lm = getLoaderManager();
        int id = LOADER_BOOKMARKS;
        while (cursor.moveToNext()) {
            String accountName = cursor.getString(0);
            String accountType = cursor.getString(1);
            Bundle args = new Bundle();
            args.putString(ACCOUNT_NAME, accountName);
            args.putString(ACCOUNT_TYPE, accountType);
            BrowserBookmarksAdapter adapter = new BrowserBookmarksAdapter(this);
            mBookmarkAdapters.put(id, adapter);
            boolean expand = true;
            try {
                expand = mState.getBoolean(
                        accountName != null ? accountName : BookmarkExpandableView.LOCAL_ACCOUNT_NAME);
            } catch (JSONException e) {
            } // no state for accountName
            mGrid.addAccount(accountName, adapter, expand);
            lm.restartLoader(id, args, this);
            id++;/*from   w w w . j a v  a  2 s.  c o m*/
        }
        // TODO: Figure out what a reload of these means
        // Currently, a reload is triggered whenever bookmarks change
        // This is less than ideal
        // It also causes UI flickering as a new adapter is created
        // instead of re-using an existing one when the account_name is the
        // same.
        // For now, this is a one-shot load
        getLoaderManager().destroyLoader(LOADER_ACCOUNTS);
    } else if (loader.getId() >= LOADER_BOOKMARKS) {
        BrowserBookmarksAdapter adapter = mBookmarkAdapters.get(loader.getId());
        adapter.changeCursor(cursor);
    }
}

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From source file:com.tct.mail.ui.FolderListFragment.java

/**
 * Sets the current account to the one provided here.
 * @param account the current account to set to.
 *///  w w  w. ja  va2 s  .c o m
private void setSelectedAccount(Account account) {
    final boolean changed = (account != null)
            && (mCurrentAccount == null || !mCurrentAccount.uri.equals(account.uri));
    mCurrentAccount = account;
    if (changed) {
        // Verify that the new account supports sending application feedback
        updateFooterItems();
        // We no longer have proper folder objects. Let the new ones come in
        mFolderAdapter.setCursor(null);
        // If currentAccount is different from the one we set, restart the loader. Look at the
        // comment on {@link AbstractActivityController#restartOptionalLoader} to see why we
        // don't just do restartLoader.
        final LoaderManager manager = getLoaderManager();
        manager.destroyLoader(FOLDER_LIST_LOADER_ID);
        manager.restartLoader(FOLDER_LIST_LOADER_ID, Bundle.EMPTY, this);
        manager.destroyLoader(ALL_FOLDER_LIST_LOADER_ID);
        manager.restartLoader(ALL_FOLDER_LIST_LOADER_ID, Bundle.EMPTY, this);
        // An updated cursor causes the entire list to refresh. No need to refresh the list.
        // But we do need to blank out the current folder, since the account might not be
        // synced.
        mSelectedFolderUri = FolderUri.EMPTY;
        mCurrentFolderForUnreadCheck = null;

        // also set/update the mini-drawer
        if (mMiniDrawerEnabled) {
            //foobar
            mMiniDrawerView.refresh();
        }

    } else if (account == null) {
        // This should never happen currently, but is a safeguard against a very incorrect
        // non-null account -> null account transition.
        LogUtils.e(LOG_TAG, "FLF.setSelectedAccount(null) called! Destroying existing loader.");
        final LoaderManager manager = getLoaderManager();
        manager.destroyLoader(FOLDER_LIST_LOADER_ID);
        manager.destroyLoader(ALL_FOLDER_LIST_LOADER_ID);
    }
}

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From source file:com.android.mail.ui.FolderListFragment.java

/**
 * Sets the current account to the one provided here.
 * @param account the current account to set to.
 */// w  w  w  .j a  v a 2 s  .c om
private void setSelectedAccount(Account account) {
    final boolean changed = (account != null)
            && (mCurrentAccount == null || !mCurrentAccount.uri.equals(account.uri));
    mCurrentAccount = account;
    if (changed) {
        // Verify that the new account supports sending application feedback
        updateFooterItems();
        // We no longer have proper folder objects. Let the new ones come in
        mFolderAdapter.setCursor(null);
        // If currentAccount is different from the one we set, restart the loader. Look at the
        // comment on {@link AbstractActivityController#restartOptionalLoader} to see why we
        // don't just do restartLoader.
        final LoaderManager manager = getLoaderManager();
        manager.destroyLoader(FOLDER_LIST_LOADER_ID);
        manager.restartLoader(FOLDER_LIST_LOADER_ID, Bundle.EMPTY, this);
        manager.destroyLoader(ALL_FOLDER_LIST_LOADER_ID);
        manager.restartLoader(ALL_FOLDER_LIST_LOADER_ID, Bundle.EMPTY, this);
        // An updated cursor causes the entire list to refresh. No need to refresh the list.
        // But we do need to blank out the current folder, since the account might not be
        // synced.
        mSelectedFolderUri = FolderUri.EMPTY;
        mCurrentFolderForUnreadCheck = null;

        // also set/update the mini-drawer
        if (mMiniDrawerAccountsAdapter != null) {
            mMiniDrawerAccountsAdapter.setAccounts(getAllAccounts(), mCurrentAccount);
        }

    } else if (account == null) {
        // This should never happen currently, but is a safeguard against a very incorrect
        // non-null account -> null account transition.
        LogUtils.e(LOG_TAG, "FLF.setSelectedAccount(null) called! Destroying existing loader.");
        final LoaderManager manager = getLoaderManager();
        manager.destroyLoader(FOLDER_LIST_LOADER_ID);
        manager.destroyLoader(ALL_FOLDER_LIST_LOADER_ID);
    }
}

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From source file:com.android.mail.ui.AbstractActivityController.java

/**
 * {@link LoaderManager} currently has a bug in
 * {@link LoaderManager#restartLoader(int, Bundle, android.app.LoaderManager.LoaderCallbacks)}
 * where, if a previous onCreateLoader returned a null loader, this method will NPE. Work around
 * this bug by destroying any loaders that may have been created as null (essentially because
 * they are optional loads, and may not apply to a particular account).
 * <p>//from   w  ww  . j av a  2 s.co m
 * A simple null check before restarting a loader will not work, because that would not
 * give the controller a chance to invalidate UI corresponding the prior loader result.
 *
 * @param id loader ID to safely restart
 * @param handler the LoaderCallback which will handle this loader ID.
 * @param args arguments, if any, to be passed to the loader. Use {@link Bundle#EMPTY} if no
 *             arguments need to be specified.
 */
private void restartOptionalLoader(int id, LoaderManager.LoaderCallbacks handler, Bundle args) {
    final LoaderManager lm = mActivity.getLoaderManager();
    lm.destroyLoader(id);
    lm.restartLoader(id, args, handler);
}

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From source file:com.chen.mail.ui.AbstractActivityController.java

/**
 * Sets the current folder if it is different from the object provided here. This method does
 * NOT notify the folder observers that a change has happened. Observers are notified when we
 * get an updated folder from the loaders, which will happen as a consequence of this method
 * (since this method starts/restarts the loaders).
 * @param folder The folder to assign//from   w  w  w  .j  a v  a  2 s  . co m
 */
private void updateFolder(Folder folder) {
    if (folder == null || !folder.isInitialized()) {
        LogUtils.e(LOG_TAG, new Error(), "AAC.setFolder(%s): Bad input", folder);
        return;
    }
    if (folder.equals(mFolder)) {
        LogUtils.d(LOG_TAG, "AAC.setFolder(%s): Input matches mFolder", folder);
        return;
    }
    final boolean wasNull = mFolder == null;
    LogUtils.d(LOG_TAG, "AbstractActivityController.setFolder(%s)", folder.name);
    final LoaderManager lm = mActivity.getLoaderManager();
    // updateFolder is called from AAC.onLoadFinished() on folder changes.  We need to
    // ensure that the folder is different from the previous folder before marking the
    // folder changed.
    setHasFolderChanged(folder);
    mFolder = folder;

    // We do not need to notify folder observers yet. Instead we start the loaders and
    // when the load finishes, we will get an updated folder. Then, we notify the
    // folderObservers in onLoadFinished.
    mActionBarView.setFolder(mFolder);

    // Only when we switch from one folder to another do we want to restart the
    // folder and conversation list loaders (to trigger onCreateLoader).
    // The first time this runs when the activity is [re-]initialized, we want to re-use the
    // previous loader's instance and data upon configuration change (e.g. rotation).
    // If there was not already an instance of the loader, init it.
    if (lm.getLoader(LOADER_FOLDER_CURSOR) == null) {
        lm.initLoader(LOADER_FOLDER_CURSOR, Bundle.EMPTY, mFolderCallbacks);
    } else {
        lm.restartLoader(LOADER_FOLDER_CURSOR, Bundle.EMPTY, mFolderCallbacks);
    }
    if (!wasNull && lm.getLoader(LOADER_CONVERSATION_LIST) != null) {
        // If there was an existing folder AND we have changed
        // folders, we want to restart the loader to get the information
        // for the newly selected folder
        lm.destroyLoader(LOADER_CONVERSATION_LIST);
    }
    final Bundle args = new Bundle(2);
    args.putParcelable(BUNDLE_ACCOUNT_KEY, mAccount);
    args.putParcelable(BUNDLE_FOLDER_KEY, mFolder);
    lm.initLoader(LOADER_CONVERSATION_LIST, args, mListCursorCallbacks);
}

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From source file:com.android.mail.ui.AbstractActivityController.java

/**
 * Sets the current folder if it is different from the object provided here. This method does
 * NOT notify the folder observers that a change has happened. Observers are notified when we
 * get an updated folder from the loaders, which will happen as a consequence of this method
 * (since this method starts/restarts the loaders).
 * @param folder The folder to assign/*from   w w w .j a va2s.  com*/
 */
private void updateFolder(Folder folder) {
    if (folder == null || !folder.isInitialized()) {
        LogUtils.e(LOG_TAG, new Error(), "AAC.setFolder(%s): Bad input", folder);
        return;
    }
    if (folder.equals(mFolder)) {
        LogUtils.d(LOG_TAG, "AAC.setFolder(%s): Input matches mFolder", folder);
        return;
    }
    final boolean wasNull = mFolder == null;
    LogUtils.d(LOG_TAG, "AbstractActivityController.setFolder(%s)", folder.name);
    final LoaderManager lm = mActivity.getLoaderManager();
    // updateFolder is called from AAC.onLoadFinished() on folder changes.  We need to
    // ensure that the folder is different from the previous folder before marking the
    // folder changed.
    setHasFolderChanged(folder);
    mFolder = folder;

    // We do not need to notify folder observers yet. Instead we start the loaders and
    // when the load finishes, we will get an updated folder. Then, we notify the
    // folderObservers in onLoadFinished.
    mActionBarController.setFolder(mFolder);

    // Only when we switch from one folder to another do we want to restart the
    // folder and conversation list loaders (to trigger onCreateLoader).
    // The first time this runs when the activity is [re-]initialized, we want to re-use the
    // previous loader's instance and data upon configuration change (e.g. rotation).
    // If there was not already an instance of the loader, init it.
    if (lm.getLoader(LOADER_FOLDER_CURSOR) == null) {
        lm.initLoader(LOADER_FOLDER_CURSOR, Bundle.EMPTY, mFolderCallbacks);
    } else {
        lm.restartLoader(LOADER_FOLDER_CURSOR, Bundle.EMPTY, mFolderCallbacks);
    }
    if (!wasNull && lm.getLoader(LOADER_CONVERSATION_LIST) != null) {
        // If there was an existing folder AND we have changed
        // folders, we want to restart the loader to get the information
        // for the newly selected folder
        lm.destroyLoader(LOADER_CONVERSATION_LIST);
    }
    final Bundle args = new Bundle(2);
    args.putParcelable(BUNDLE_ACCOUNT_KEY, mAccount);
    args.putParcelable(BUNDLE_FOLDER_KEY, mFolder);
    args.putBoolean(BUNDLE_IGNORE_INITIAL_CONVERSATION_LIMIT_KEY, mIgnoreInitialConversationLimit);
    mIgnoreInitialConversationLimit = false;
    lm.initLoader(LOADER_CONVERSATION_LIST, args, mListCursorCallbacks);
}

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From source file:com.tct.mail.ui.AbstractActivityController.java

/**
 * TCT: Move data load code to an independent function, if we just want refresh loader data.
 * call this to refresh cursor data(local search or update folder)
 */// w w  w.j  a va2  s.  c  om
private void loadConversationListData(boolean folderUpdated) {
    if (mFolder == null || !mFolder.isInitialized()) {
        LogUtils.e(LOG_TAG, new Error(), "AAC.setFolder(%s): Bad input", mFolder);
        return;
    }
    final LoaderManager lm = mActivity.getLoaderManager();

    if (mConvListContext != null && mConvListContext.isLocalSearchExecuted()) {
        final Bundle args = new Bundle(4);
        args.putParcelable(BUNDLE_ACCOUNT_KEY, mAccount);
        args.putParcelable(BUNDLE_FOLDER_KEY, mFolder);
        args.putString(SearchParams.BUNDLE_QUERY_FIELD, mConvListContext.getSearchField());
        args.putString(SearchParams.BUNDLE_QUERY_TERM, mConvListContext.getSearchQuery());
        LogUtils.logFeature(LogTag.SEARCH_TAG,
                "loadConversationListData for local search query [%s], field [%s]",
                mConvListContext.getSearchQuery(), mConvListContext.getSearchField());
        ///TCT: Before we start the local search loader, need cancel the normal conversation list
        // loader to avoid no need load and wrong result display by the load finish delay.@{
        if (lm.getLoader(LOADER_CONVERSATION_LIST) != null) {
            lm.destroyLoader(LOADER_CONVERSATION_LIST);
        }
        // @}

        lm.restartLoader(LOADER_LOCALSEARCH_CONVERSATION_LIST, args, mListCursorCallbacks);
    } else {

        ///TCT: Before we start the normal search loader, need cancel the local search conversation list
        // loader to avoid no need load and wrong result display by the load finish delay.@{
        if (lm.getLoader(LOADER_LOCALSEARCH_CONVERSATION_LIST) != null) {

            lm.destroyLoader(LOADER_LOCALSEARCH_CONVERSATION_LIST);

        }
        // @}

        // TS: kaifeng.lu 2015-09-8 EMAIL BUGFIX-1065353 DEL_S
        //            final ConversationCursorLoader ccl = (ConversationCursorLoader) ((Object) lm
        //                    .getLoader(LOADER_CONVERSATION_LIST));

        //            if (ccl != null && !ccl.getUri().equals(mFolder.conversationListUri) && folderUpdated) {

        // If there was an existing folder AND we have changed
        // folders, we want to restart the loader to get the information
        // for the newly selected folder
        //                lm.destroyLoader(LOADER_CONVERSATION_LIST);

        //            }
        // TS: kaifeng.lu 2015-09-8 EMAIL BUGFIX-1065353 DEL_E

        final Bundle args = new Bundle(2);
        args.putParcelable(BUNDLE_ACCOUNT_KEY, mAccount);
        args.putParcelable(BUNDLE_FOLDER_KEY, mFolder);
        args.putBoolean(BUNDLE_IGNORE_INITIAL_CONVERSATION_LIMIT_KEY, mIgnoreInitialConversationLimit);
        mIgnoreInitialConversationLimit = false;
        lm.initLoader(LOADER_CONVERSATION_LIST, args, mListCursorCallbacks);
    }
}

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