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AppInjector.java
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AppInjector.java
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/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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.
*/
package com.android.example.github.di;
import com.android.example.github.GithubApp;
import android.app.Activity;
import android.app.Application;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import dagger.android.AndroidInjection;
import dagger.android.support.AndroidSupportInjection;
import dagger.android.support.HasSupportFragmentInjector;
/**
* Helper class to automatically inject fragments if they implement {@link Injectable}.
*/
public class AppInjector {
private AppInjector() {}
public static void init(GithubApp githubApp) {
DaggerAppComponent.builder().application(githubApp)
.build().inject(githubApp);
githubApp
.registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {
@Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
handleActivity(activity);
}
@Override
public void onActivityStarted(Activity activity) {
}
@Override
public void onActivityResumed(Activity activity) {
}
@Override
public void onActivityPaused(Activity activity) {
}
@Override
public void onActivityStopped(Activity activity) {
}
@Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
}
@Override
public void onActivityDestroyed(Activity activity) {
}
});
}
private static void handleActivity(Activity activity) {
if (activity instanceof HasSupportFragmentInjector) {
AndroidInjection.inject(activity);
}
if (activity instanceof FragmentActivity) {
((FragmentActivity) activity).getSupportFragmentManager()
.registerFragmentLifecycleCallbacks(
new FragmentManager.FragmentLifecycleCallbacks() {
@Override
public void onFragmentCreated(FragmentManager fm, Fragment f,
Bundle savedInstanceState) {
if (f instanceof Injectable) {
AndroidSupportInjection.inject(f);
}
}
}, true);
}
}
}