android-ghostfish 
Dependency injection container for Android
1. Annotations
ApplicationScoped- specifies that a bean is application scoped.Inject- injectable instance fields or constructors.PostConstruct- method that needs to be run after instantiating an application scoped bean.
2. Dependency injection
Using annotation processors, GhostFish compiles a list of application scoped beans in asset/beans.txt file.
3. Example
3.1 Add GhostFish dependency to your gradle file:
implementation "com.danielpuiu:ghostfish:2.0.0"
annotationProcessor "com.danielpuiu:ghostfish-compiler:2.0.0"
3.2 Add GhostFish bind call to your application
Subclass Android application and add the following code to onCreate method:
@Override
public void onCreate() {
super.onCreate();
GhostFish.create(this);
}
Don't forget to add this class to your manifest file right under application tag
<application
...
android:name="<class_name>"
...
3.3 Proguard
If you use Proguard and minified, then make sure to add the following rule to your proguard rules file:
-keep @com.danielpuiu.ghostfish.annotations.ApplicationScoped class * {*;}
3.4 Sample code
3.4.1 Service class
@ApplicationScoped
public class SampleService {
public String helloWorld() {
return "Hello, world!";
}
@PostConstruct
private void init() {
// code
}
}
3.4.2 Activity class
public class MainActivity extends AppCompatActivity {
@Inject
private SampleService sampleService;
@Override
protected void onCreate(Bundle savedInstanceState) {
...
GhostFish.bind(this);
...
TextView textView = findViewById(R.id.message);
textView.setText(sampleService.helloWorld());
...
}
}
4 Developed By
Daniel PUIU
5 License
Copyright 2018 Daniel PUIU
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.
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