Examples with ValueEventListener com.google.firebase.database.ValueEventListener used on opensource projects

Example 96 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project MadMax by deviz92.

the class FirebaseUtils method removeExpenseFirebase.

public void removeExpenseFirebase(final String expenseID, final Context context) {
    databaseReference.child("expenses").child(expenseID).addValueEventListener(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            String groupID = dataSnapshot.child("groupID").getValue(String.class);
            // aggiunto da riky per mandare la notifica a tutti tranne a chi ha eliminato la spesa
            databaseReference.child("expenses").child(expenseID).child("deletedBy").setValue(MainActivity.getCurrentUID());
            // Elimino spesa dal gruppo
            databaseReference.child("groups").child(groupID).child("expenses").child(expenseID).setValue(false);
            // Per ogni participant elimino la spesa dal suo elenco spese
            for (DataSnapshot participantSnapshot : dataSnapshot.child("participants").getChildren()) {
                String participantID = participantSnapshot.getKey();
                databaseReference.child("users").child(participantID).child("expenses").child(expenseID).setValue(false);
            }
            // Elimino commenti sulla spesa
            databaseReference.child("comments").child(groupID).removeValue();
            // Elimino spesa
            databaseReference.child("expenses").child(expenseID).child("deleted").setValue(true);
            // Toast.makeText(context,context.getString(R.string.expense_removed),Toast.LENGTH_SHORT).show();
            // add event for EXPENSE_REMOVE
            databaseReference.child("expenses").child(expenseID).addListenerForSingleValueEvent(new ValueEventListener() {

                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    User currentUser = MainActivity.getCurrentUser();
                    Event event = new Event(dataSnapshot.child("groupID").getValue(String.class), Event.EventType.EXPENSE_REMOVE, currentUser.getName() + " " + currentUser.getSurname(), dataSnapshot.child("description").getValue(String.class));
                    event.setDate(new SimpleDateFormat("yyyy.MM.dd").format(new java.util.Date()));
                    event.setTime(new SimpleDateFormat("HH:mm").format(new java.util.Date()));
                    FirebaseUtils.getInstance().addEvent(event);
                }

                @Override
                public void onCancelled(DatabaseError databaseError) {
                    Log.w(TAG, databaseError.toException());
                }
            });
        /*Intent intent = new Intent(context, GroupDetailActivity.class);
                intent.putExtra("groupID", groupID);
                intent.putExtra("userID", MainActivity.getCurrentUID());
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(intent);*/
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
        }
    });
}

Example 97 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project quickstart-android by firebase.

the class NewPostActivity method submitPost.

private void submitPost() {
    final String title = mTitleField.getText().toString();
    final String body = mBodyField.getText().toString();
    // Title is required
    if (TextUtils.isEmpty(title)) {
        mTitleField.setError(REQUIRED);
        return;
    }
    // Body is required
    if (TextUtils.isEmpty(body)) {
        mBodyField.setError(REQUIRED);
        return;
    }
    // Disable button so there are no multi-posts
    setEditingEnabled(false);
    Toast.makeText(this, "Posting...", Toast.LENGTH_SHORT).show();
    // [START single_value_read]
    final String userId = getUid();
    mDatabase.child("users").child(userId).addListenerForSingleValueEvent(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            // Get user value
            User user = dataSnapshot.getValue(User.class);
            // [START_EXCLUDE]
            if (user == null) {
                // User is null, error out
                Log.e(TAG, "User " + userId + " is unexpectedly null");
                Toast.makeText(NewPostActivity.this, "Error: could not fetch user.", Toast.LENGTH_SHORT).show();
            } else {
                // Write new post
                writeNewPost(userId, user.username, title, body);
            }
            // Finish this Activity, back to the stream
            setEditingEnabled(true);
            finish();
        // [END_EXCLUDE]
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
            Log.w(TAG, "getUser:onCancelled", databaseError.toException());
            // [START_EXCLUDE]
            setEditingEnabled(true);
        // [END_EXCLUDE]
        }
    });
// [END single_value_read]
}

Example 98 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project quickstart-android by firebase.

the class PostDetailActivity method onStart.

@Override
public void onStart() {
    super.onStart();
    // Add value event listener to the post
    // [START post_value_event_listener]
    ValueEventListener postListener = new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            // Get Post object and use the values to update the UI
            Post post = dataSnapshot.getValue(Post.class);
            // [START_EXCLUDE]
            mAuthorView.setText(post.author);
            mTitleView.setText(post.title);
            mBodyView.setText(post.body);
        // [END_EXCLUDE]
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
            // Getting Post failed, log a message
            Log.w(TAG, "loadPost:onCancelled", databaseError.toException());
            // [START_EXCLUDE]
            Toast.makeText(PostDetailActivity.this, "Failed to load post.", Toast.LENGTH_SHORT).show();
        // [END_EXCLUDE]
        }
    };
    mPostReference.addValueEventListener(postListener);
    // [END post_value_event_listener]
    // Keep copy of post listener so we can remove it when app stops
    mPostListener = postListener;
    // Listen for comments
    mAdapter = new CommentAdapter(this, mCommentsReference);
    mCommentsRecycler.setAdapter(mAdapter);
}

Example 99 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project priend by TakoJ.

the class NewPostActivity method submitPost.

private void submitPost() {
    final String title = mTitleField.getText().toString();
    final String body = mBodyField.getText().toString();
    // Title is required
    if (TextUtils.isEmpty(title)) {
        mTitleField.setError(REQUIRED);
        return;
    }
    // Body is required
    if (TextUtils.isEmpty(body)) {
        mBodyField.setError(REQUIRED);
        return;
    }
    // Disable button so there are no multi-posts
    setEditingEnabled(false);
    Toast.makeText(this, "Posting...", Toast.LENGTH_SHORT).show();
    // [START single_value_read]
    final String userId = mAuth.getCurrentUser().getUid();
    mDatabase.child("users").child(userId).addListenerForSingleValueEvent(new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            // Get user value
            User user = dataSnapshot.getValue(User.class);
            // [START_EXCLUDE]
            if (user == null) {
                // User is null, error out
                Log.e(TAG, "User " + userId + " is unexpectedly null");
                Toast.makeText(NewPostActivity.this, "Error: could not fetch user.", Toast.LENGTH_SHORT).show();
            } else {
                // Write new post
                writeNewPost(userId, user.username, title, body);
            }
            // Finish this Activity, back to the stream
            setEditingEnabled(true);
            finish();
        // [END_EXCLUDE]
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
            Log.w(TAG, "getUser:onCancelled", databaseError.toException());
            // [START_EXCLUDE]
            setEditingEnabled(true);
        // [END_EXCLUDE]
        }
    });
// [END single_value_read]
}

Example 100 with ValueEventListener

use of com.google.firebase.database.ValueEventListener in project priend by TakoJ.

the class PostDetailActivity method onStart.

@Override
public void onStart() {
    super.onStart();
    // Add value event listener to the post
    // [START post_value_event_listener]
    ValueEventListener postListener = new ValueEventListener() {

        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            // Get Post object and use the values to update the UI
            Post post = dataSnapshot.getValue(Post.class);
            // [START_EXCLUDE]
            mAuthorView.setText(post.author);
            mTitleView.setText(post.title);
            mBodyView.setText(post.body);
        // [END_EXCLUDE]
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
            // Getting Post failed, log a message
            Log.w(TAG, "loadPost:onCancelled", databaseError.toException());
            // [START_EXCLUDE]
            Toast.makeText(PostDetailActivity.this, "Failed to load post.", Toast.LENGTH_SHORT).show();
        // [END_EXCLUDE]
        }
    };
    mPostReference.addValueEventListener(postListener);
    // [END post_value_event_listener]
    // Keep copy of post listener so we can remove it when app stops
    mPostListener = postListener;
    // Listen for comments
    mAdapter = new CommentAdapter(this, mCommentsReference);
    mCommentsRecycler.setAdapter(mAdapter);
}