當前位置: 首頁>>代碼示例>>Java>>正文

Java DataSnapshot.getValue方法代碼示例

本文整理匯總了Java中com.firebase.client.DataSnapshot.getValue方法的典型用法代碼示例。如果您正苦於以下問題：Java DataSnapshot.getValue方法的具體用法？Java DataSnapshot.getValue怎麽用？Java DataSnapshot.getValue使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類com.firebase.client.DataSnapshot的用法示例。


在下文中一共展示了DataSnapshot.getValue方法的13個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: deserialize

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
/**
 * Custom de-serializer that uses a similar approach to {@link DataSnapshot#getValue(Class)}, but uses {@link Gson}
 * instead.
 *
 * @param <T>
 *         Type of object to return
 * @param snapshot
 *         The {@link DataSnapshot} provided by a Firebase event callback
 * @param clazz
 *         Class of object to deserialize
 *
 * @return
 */
@Nullable
@SuppressWarnings("Unchecked")
public <T> T deserialize(DataSnapshot snapshot, Class<T> clazz) {
    T deserialized = null;

    Map<String, String> value = (Map<String, String>) snapshot.getValue();

    if (value != null) {
        try {
            // JSON stringify the snapshot value using Firebase's mapper
            String jsonStr = JsonHelpers.getMapper().writeValueAsString(value);

            deserialized = gson.fromJson(jsonStr, clazz);
        } catch (JsonProcessingException e) {
            // Swallow error
        }
    }

    return deserialized;
}
開發者ID:AniFichadia，項目名稱:FirebaseHelpersLegacy，代碼行數:34，代碼來源:FirebaseGsonSerializer.java

示例2: onChildAdded

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
    String key = dataSnapshot.getKey();

    if (!mKeys.contains(key)) {
        T item = dataSnapshot.getValue(FirebaseRecyclerAdapter.this.mItemClass);
        int insertedPosition;
        if (previousChildName == null) {
            mItems.add(0, item);
            mKeys.add(0, key);
            insertedPosition = 0;
        } else {
            int previousIndex = mKeys.indexOf(previousChildName);
            int nextIndex = previousIndex + 1;
            if (nextIndex == mItems.size()) {
                mItems.add(item);
                mKeys.add(key);
            } else {
                mItems.add(nextIndex, item);
                mKeys.add(nextIndex, key);
            }
            insertedPosition = nextIndex;
        }
        notifyItemInserted(insertedPosition);
        itemAdded(item, key, insertedPosition);
    }
}
開發者ID:benslamajihed，項目名稱:GalleryPictureFirebaseAndroid，代碼行數:28，代碼來源:FirebaseRecyclerAdapter.java

示例3: onChildChanged

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
    String key = dataSnapshot.getKey();

    if (mKeys.contains(key)) {
        int index = mKeys.indexOf(key);
        T oldItem = mItems.get(index);
        T newItem = dataSnapshot.getValue(FirebaseRecyclerAdapter.this.mItemClass);

        mItems.set(index, newItem);

        notifyItemChanged(index);
        itemChanged(oldItem, newItem, key, index);
    }
}
開發者ID:benslamajihed，項目名稱:GalleryPictureFirebaseAndroid，代碼行數:16，代碼來源:FirebaseRecyclerAdapter.java

示例4: onChildMoved

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
    String key = dataSnapshot.getKey();

    int index = mKeys.indexOf(key);
    T item = dataSnapshot.getValue(FirebaseRecyclerAdapter.this.mItemClass);
    mItems.remove(index);
    mKeys.remove(index);
    int newPosition;
    if (previousChildName == null) {
        mItems.add(0, item);
        mKeys.add(0, key);
        newPosition = 0;
    } else {
        int previousIndex = mKeys.indexOf(previousChildName);
        int nextIndex = previousIndex + 1;
        if (nextIndex == mItems.size()) {
            mItems.add(item);
            mKeys.add(key);
        } else {
            mItems.add(nextIndex, item);
            mKeys.add(nextIndex, key);
        }
        newPosition = nextIndex;
    }
    notifyItemMoved(index, newPosition);
    itemMoved(item, key, index, newPosition);
}
開發者ID:benslamajihed，項目名稱:GalleryPictureFirebaseAndroid，代碼行數:29，代碼來源:FirebaseRecyclerAdapter.java

示例5: nextVideo

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
public File nextVideo() {
  if (nearestHourScheduler == null) {return null;}

  // Attempt to use the closest hour.
  DataSnapshot snapshot = nearestHourScheduler.closestToCurrentHour();
  if (snapshot != null && videoStorage.hasVideo(snapshot.getKey())) {
    currentVideo = snapshot.getValue(Video.class);
    return videoStorage.getVideo(snapshot.getKey());
  }

  return null;
}
開發者ID:Eric-Gonzalez，項目名稱:marclay，代碼行數:13，代碼來源:MediaDispatcher.java

示例6: onChildAdded

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
@Override public void onChildAdded(DataSnapshot dataSnapshot, String s) {
  // Start Video download
  Video video = dataSnapshot.getValue(Video.class);
  String key = dataSnapshot.getKey();

  if (!videoStorage.hasVideo(key)) {
    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(video.getUrl()));
    request.setVisibleInDownloadsUi(true);
    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
    request.setDestinationInExternalFilesDir(context, null, dataSnapshot.getKey());
    keyToDownloadIdMap.put(downloadManager.enqueue(request), key);
  }
}
開發者ID:Eric-Gonzalez，項目名稱:marclay，代碼行數:14，代碼來源:MediaDispatcher.java

示例7: NearestHourScheduler

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
public NearestHourScheduler(Iterable<DataSnapshot> items) {
  this.videoDataSnapshotMap = new TreeMap<>(new Comparator<Video>() {
    @Override public int compare(Video video, Video that) {
      return Integer.compare(video.getHour(), that.getHour());
    }
  });

  for (DataSnapshot snapshot : items) {
    Video video = snapshot.getValue(Video.class);
    videoDataSnapshotMap.put(video, snapshot);
  }
}
開發者ID:Eric-Gonzalez，項目名稱:marclay，代碼行數:13，代碼來源:NearestHourScheduler.java

示例8: parse

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
private TreeSet<Message> parse(DataSnapshot dataSnapshot) {
    TreeSet<Message> messages = new TreeSet<>();
    for (DataSnapshot child : dataSnapshot.getChildren()) {
        Message message = child.getValue(Message.class);
        message.setKey(child.getKey());
        messages.add(message);
    }

    return messages;
}
開發者ID:aluxian，項目名稱:Codementor，代碼行數:11，代碼來源:MessagesEventListener.java

示例9: getFirebaseUser

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
private void getFirebaseUser(final User current_user) {
    mCurrentUserRef = mRootRef.child("users").child(current_user.getUsername());
    mGetUserListener = new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot snapshot) {
            Log.d("FIREBASE", "Called firebase to get user " + current_user.getUsername());

            if (snapshot.exists()) {
                Log.d("FIREBASE", "User " + current_user.getUsername() + " was registered before");
                Helper.currentUser = snapshot.getValue(User.class); // addValueEventListenerwill reset the week score in case its monday
                if (Helper.currentUser.getMax_streak() > 0)
                    doesntHaveStreakYet = false;
            } else {
                Log.d("FIREBASE", "User " + current_user.getUsername() + " didn't exist");
                Helper.currentUser = current_user;
                Helper.currentUser.setScore(0);
                Helper.currentUser.setMax_streak(0);
                Helper.currentUser.setWeek_score(0);
                mCurrentUserRef.setValue(Helper.currentUser);

            }
            mScoreText.setText("" + Helper.currentUser.getScore());
            if (isFirstLoad) play();
            isFirstLoad = false;
        }

        @Override
        public void onCancelled(FirebaseError firebaseError) {
            Log.d("FIREBASE", "The read failed: " + firebaseError.getMessage());
        }
    };
    mCurrentUserRef.addValueEventListener(mGetUserListener);
}
開發者ID:silva96，項目名稱:guessthehashtag，代碼行數:34，代碼來源:MainActivity.java

示例10: onDataChange

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
    value = dataSnapshot.getValue(type);
    semaphore.release();
    throw new UnsupportedOperationException("Not implemented");
}
開發者ID:elser，項目名稱:FirebaseJUnitExample，代碼行數:7，代碼來源:SyncListener.java

示例11: create

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
public static SyncedNotification create(DataSnapshot snapshot) {
  return snapshot.getValue(SyncedNotification.class);
}
開發者ID:Eric-Gonzalez，項目名稱:marclay，代碼行數:4，代碼來源:SyncedNotification.java

示例12: addDataChangeListener

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
private void addDataChangeListener() {
    mItemRef = new Firebase(Utils.getFirebaseUserDiaryUrl(mUserUID))
            .child(mKey);

    mValueEventListener = new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            mDiaryNote = dataSnapshot.getValue(DiaryNote.class);

            if (mDiaryNote == null) {
                return;
            }

            mEdtDiaryNoteTitle.setText(mDiaryNote.getTitle());
            mBigTitle.setText(mDiaryNote.getTitle());
            mTravelTitle.setText(mDiaryNote.getTravelTitle());

            mRtEditText.setRichTextEditing(true, mDiaryNote.getText());
            if (Utils.isEmpty(mRtEditText)) {
                mRtEditText.setVisibility(View.GONE);
            } else {
                mRtEditText.setVisibility(View.VISIBLE);
            }

            if (mDiaryNote.getPhotos() != null && !mDiaryNote.getPhotos().isEmpty()) {
                mImages = mDiaryNote.getPhotos();

                boolean showWarning = mSharedPreferences.getBoolean(Constants.KEY_SHOW_WARNING, true);
                if (showWarning) {
                    for (int i = 0; i < mImages.size(); i++) {
                        if (!Utils.checkFileExists(getContext(), mImages.get(i).getLocalUri()) &&
                                mImages.get(i).getPicasaUri() == null) {
                            mWarning.setVisibility(View.VISIBLE);
                            break;
                        }
                    }
                }

                mImagesRecyclerView.setVisibility(View.VISIBLE);
                ((DiaryImagesListAdapter) mImagesRecyclerView.getAdapter()).changeList(mImages);
                mImagesRecyclerView.scrollToPosition(0);
            } else {
                mImagesRecyclerView.setVisibility(View.GONE);
            }

            mDiaryFooterLayout.setVisibility(View.VISIBLE);
            setWeatherViews();

            if (mDiaryNote.getLocation() != null) {
                mLocationLayout.setVisibility(View.VISIBLE);
                setupMap();

                if (mDiaryNote.getAddressDetails() != null) {
                    setLocationText(mDiaryNote.getAddressDetails());
                } else {
                    mTxtLocation.setText(getResources()
                            .getString(R.string.location_format_address_line_with_gps,
                                    mDiaryNote.getLocation().getLatitude(),
                                    mDiaryNote.getLocation().getLongitude()));
                    mTxtSubLocation.setVisibility(View.GONE);
                }

                putMarker(new LatLng(mDiaryNote.getLocation().getLatitude(),
                        mDiaryNote.getLocation().getLongitude()));
            } else {
                mLocationLayout.setVisibility(View.GONE);

                if (mDiaryNote.getWeather() == null) {
                    mDiaryFooterLayout.setVisibility(View.GONE);
                }
            }
        }

        @Override
        public void onCancelled(FirebaseError firebaseError) {
            Toast.makeText(getContext(), firebaseError.getMessage(), Toast.LENGTH_SHORT).show();
        }
    };

    mItemRef.addValueEventListener(mValueEventListener);
}
開發者ID:trigor74，項目名稱:travelers-diary，代碼行數:82，代碼來源:DiaryFragment.java

示例13: exists

import com.firebase.client.DataSnapshot; //導入方法依賴的package包/類
/**
 * Method returning is there such a patient added or not
 * @param dataSnapshot - database object
 */
public boolean exists(DataSnapshot dataSnapshot) {
    return dataSnapshot.getValue() != null;
}
開發者ID:ursopanda，項目名稱:kneeRehabMonitoring，代碼行數:8，代碼來源:DrawerActivity.java


注：本文中的com.firebase.client.DataSnapshot.getValue方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。