RxFirebase
RxJava wrapper on Google's Firebase for Android library.
Usage
Library provides set of static methods of classes:
- RxFirebaseAuth
- RxFirebaseUser
- RxFirebaseDatabase
- RxFirebaseStorage
Authentication:
Sign in anonymously and get token:
RxFirebaseAuth.signInAnonymously(FirebaseAuth.getInstance())
.flatMap(x -> RxFirebaseUser.getToken(FirebaseAuth.getInstance().getCurrentUser(), false))
.subscribe(token -> {
Log.i("RxFirebaseSample", "user token: " + token.getToken());
}
, throwable -> {
Log.e("RxFirebaseSample", throwable.toString());
}
);
Database:
Many thanks to @renanferrari for making it much more flexible.
You can simply observe values providing the Class of expected data like:
RxFirebaseDatabase.observeSingleValue(reference.child("users").child("nick"), User.class)
.subscribe(user -> {
// process user value(nullable)
}
);
or providing your own mapper between DataSnapshot and your data type:
RxFirebaseDatabase.observeSingleValueEvent(reference.child("posts"),
dataSnapshot -> {
// do your own mapping here
return new User();
}
)
.subscribe(user -> {
// process user value
}
);
There are some pre-defined mappers to make things easier:
Observing list values
RxFirebaseDatabase.observeSingleValueEvent(reference.child("posts"), DataSnapshotMapper.listOf(BlogPost.class))
.subscribe(blogPost -> {
// process blogPost list item
}
);
Observing map values
RxFirebaseDatabase.observeSingleValueEvent(reference.child("posts"), DataSnapshotMapper.mapOf(BlogPost.class))
.subscribe(blogPostAsMapItem -> {
// process blogPost as key-value pair
}
);
Storage
Download file from Firebase storage
StorageReference storageRef = FirebaseStorage.getInstance().getReferenceFromUrl("gs://project-1125675579821020265.appspot.com");
RxFirebaseStorage.getFile(storageRef.child("README.md"), targetFile)
.subscribe(snapshot -> {
Log.i("RxFirebaseSample", "transferred: " + snapshot.getBytesTransferred() + " bytes");
}
, throwable -> {
Log.e("RxFirebaseSample", throwable.toString());
}
);
or download file as bytes array
RxFirebaseStorage.getBytes(storageRef.child("README.md"), 1024 * 100)
.subscribe(bytes -> {
Log.i("RxFirebaseSample", "downloaded: " + new String(bytes));
}
, throwable -> {
Log.e("RxFirebaseSample", throwable.toString());
}
);
Download
Gradle:
dependencies {
compile 'com.google.firebase:firebase-auth:9.4.0'
compile 'com.google.firebase:firebase-database:9.4.0'
compile 'com.google.firebase:firebase-storage:9.4.0'
compile 'com.kelvinapps:rxfirebase:0.0.15'
}
Maven:
<dependency>
<groupId>com.kelvinapps</groupId>
<artifactId>rxfirebase</artifactId>
<version>0.0.15</version>
<type>pom</type> </dependency> License
Copyright 2016 Nickolay Moskalenko Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.