Introducing nucleus

This commit is contained in:
inorichi 2015-10-16 19:31:18 +02:00
parent 68f1102c40
commit 235ed36fbe
3 changed files with 113 additions and 0 deletions

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@ -48,6 +48,7 @@ dependencies {
final HAMCREST_VERSION = '1.3' final HAMCREST_VERSION = '1.3'
final MOCKITO_VERSION = '1.10.19' final MOCKITO_VERSION = '1.10.19'
final STORIO_VERSION = '1.4.0' final STORIO_VERSION = '1.4.0'
final NUCLEUS_VERSION = '2.0.1'
compile fileTree(dir: 'libs', include: ['*.jar']) compile fileTree(dir: 'libs', include: ['*.jar'])
@ -65,6 +66,9 @@ dependencies {
compile 'io.reactivex:rxandroid:1.0.1' compile 'io.reactivex:rxandroid:1.0.1'
compile "com.pushtorefresh.storio:sqlite:$STORIO_VERSION" compile "com.pushtorefresh.storio:sqlite:$STORIO_VERSION"
compile "com.pushtorefresh.storio:sqlite-annotations:$STORIO_VERSION" compile "com.pushtorefresh.storio:sqlite-annotations:$STORIO_VERSION"
compile "info.android15.nucleus:nucleus:$NUCLEUS_VERSION"
compile "info.android15.nucleus:nucleus-support-v4:$NUCLEUS_VERSION"
compile "info.android15.nucleus:nucleus-support-v7:$NUCLEUS_VERSION"
compile 'de.greenrobot:eventbus:2.4.0' compile 'de.greenrobot:eventbus:2.4.0'
compile 'com.github.bumptech.glide:glide:3.6.1' compile 'com.github.bumptech.glide:glide:3.6.1'
compile 'com.jakewharton:butterknife:7.0.1' compile 'com.jakewharton:butterknife:7.0.1'

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@ -17,6 +17,7 @@ import timber.log.Timber;
public class App extends Application { public class App extends Application {
AppComponent mApplicationComponent; AppComponent mApplicationComponent;
ComponentReflectionInjector<AppComponent> mComponentInjector;
@Override @Override
public void onCreate() { public void onCreate() {
@ -27,6 +28,9 @@ public class App extends Application {
.appModule(new AppModule(this)) .appModule(new AppModule(this))
.build(); .build();
mComponentInjector =
new ComponentReflectionInjector<>(AppComponent.class, mApplicationComponent);
//ACRA.init(this); //ACRA.init(this);
} }
@ -38,6 +42,14 @@ public class App extends Application {
return mApplicationComponent; return mApplicationComponent;
} }
public ComponentReflectionInjector<AppComponent> getComponentReflection() {
return mComponentInjector;
}
public static ComponentReflectionInjector<AppComponent> getComponentReflection(Context context) {
return get(context).getComponentReflection();
}
public static AppComponent getComponent(Context context) { public static AppComponent getComponent(Context context) {
return get(context).getComponent(); return get(context).getComponent();
} }

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@ -0,0 +1,97 @@
package eu.kanade.mangafeed;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.concurrent.ConcurrentHashMap;
/**
* This class allows to inject into objects through a base class,
* so we don't have to repeat injection code everywhere.
*
* The performance drawback is about 0.013 ms per injection on a very slow device,
* which is negligible in most cases.
*
* Example:
* <pre>{@code
* Component {
* void inject(B b);
* }
*
* class A {
* void onCreate() {
* componentReflectionInjector.inject(this);
* }
* }
*
* class B extends A {
* @Inject MyDependency dependency;
* }
*
* new B().onCreate() // dependency will be injected at this point
*
* class C extends B {
*
* }
*
* new C().onCreate() // dependency will be injected at this point as well
* }</pre>
*
* @param <T> a type of dagger 2 component.
*/
public final class ComponentReflectionInjector<T> {
private final Class<T> componentClass;
private final T component;
private final HashMap<Class<?>, Method> methods;
public ComponentReflectionInjector(Class<T> componentClass, T component) {
this.componentClass = componentClass;
this.component = component;
this.methods = getMethods(componentClass);
}
public T getComponent() {
return component;
}
public void inject(Object target) {
Class targetClass = target.getClass();
Method method = methods.get(targetClass);
while (method == null && targetClass != null) {
targetClass = targetClass.getSuperclass();
method = methods.get(targetClass);
}
if (method == null)
throw new RuntimeException(String.format("No %s injecting method exists in %s component", target.getClass(), componentClass));
try {
method.invoke(component, target);
}
catch (Exception e) {
throw new RuntimeException(e);
}
}
private static final ConcurrentHashMap<Class<?>, HashMap<Class<?>, Method>> cache = new ConcurrentHashMap<>();
private static HashMap<Class<?>, Method> getMethods(Class componentClass) {
HashMap<Class<?>, Method> methods = cache.get(componentClass);
if (methods == null) {
synchronized (cache) {
methods = cache.get(componentClass);
if (methods == null) {
methods = new HashMap<>();
for (Method method : componentClass.getMethods()) {
Class<?>[] params = method.getParameterTypes();
if (params.length == 1)
methods.put(params[0], method);
}
cache.put(componentClass, methods);
}
}
}
return methods;
}
}