java/dagger/android/support/DaggerFragment.java

/*
 * Copyright (C) 2017 The Dagger Authors.
 *
 * 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 dagger.android.support;

import android.content.Context;
import androidx.fragment.app.Fragment;
import androidx.annotation.ContentView;
import androidx.annotation.LayoutRes;
import dagger.android.AndroidInjector;
import dagger.android.DispatchingAndroidInjector;
import dagger.android.HasAndroidInjector;
import dagger.internal.Beta;
import javax.inject.Inject;

/**
 * A {@link Fragment} that injects its members in {@link #onAttach(Context)} and can be used to
 * inject child {@link Fragment}s attached to it. Note that when this fragment gets reattached, its
 * members will be injected again.
 */
@Beta
public abstract class DaggerFragment extends Fragment implements HasAndroidInjector {

  @Inject DispatchingAndroidInjector<Object> androidInjector;

  public DaggerFragment() {
    super();
  }

  @ContentView
  public DaggerFragment(@LayoutRes int contentLayoutId) {
    super(contentLayoutId);
  }

  @Override
  public void onAttach(Context context) {
    AndroidSupportInjection.inject(this);
    super.onAttach(context);
  }

  @Override
  public AndroidInjector<Object> androidInjector() {
    return androidInjector;
  }
}