| /* |
| * Copyright 2018 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 androidx.fragment.app; |
| |
| import android.os.Bundle; |
| import android.support.test.annotation.UiThreadTest; |
| import android.support.test.filters.MediumTest; |
| import android.support.test.rule.ActivityTestRule; |
| import android.support.test.runner.AndroidJUnit4; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.TextView; |
| |
| import androidx.annotation.Nullable; |
| import androidx.fragment.app.test.FragmentTestActivity; |
| import androidx.fragment.test.R; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| @MediumTest |
| public class NestedInflatedFragmentTest { |
| private static final String TAG = "NestedInflatedFragmentTest"; |
| |
| @Rule |
| public ActivityTestRule<FragmentTestActivity> mActivityRule = |
| new ActivityTestRule<>(FragmentTestActivity.class); |
| |
| @Test |
| @UiThreadTest |
| public void inflatedChildFragment() throws Throwable { |
| final FragmentTestActivity activity = mActivityRule.getActivity(); |
| final FragmentManager fm = activity.getSupportFragmentManager(); |
| |
| ParentFragment parentFragment = new ParentFragment(); |
| fm.beginTransaction().add(android.R.id.content, parentFragment).commitNow(); |
| |
| fm.beginTransaction().replace(android.R.id.content, new SimpleFragment()) |
| .addToBackStack(null).commit(); |
| fm.executePendingTransactions(); |
| |
| fm.popBackStackImmediate(); |
| } |
| |
| /** |
| * This mimics the behavior of FragmentStatePagerAdapter jumping between pages |
| */ |
| @Test |
| @UiThreadTest |
| public void nestedSetUserVisibleHint() throws Throwable { |
| FragmentManager fm = mActivityRule.getActivity().getSupportFragmentManager(); |
| |
| // Add a UserVisibleHintParentFragment |
| UserVisibleHintParentFragment fragment = new UserVisibleHintParentFragment(); |
| fm.beginTransaction().add(android.R.id.content, fragment).commit(); |
| fm.executePendingTransactions(); |
| |
| fragment.setUserVisibleHint(false); |
| |
| Fragment.SavedState state = fm.saveFragmentInstanceState(fragment); |
| fm.beginTransaction().remove(fragment).commit(); |
| fm.executePendingTransactions(); |
| |
| fragment = new UserVisibleHintParentFragment(); |
| fragment.setInitialSavedState(state); |
| fragment.setUserVisibleHint(true); |
| |
| fm.beginTransaction().add(android.R.id.content, fragment).commit(); |
| fm.executePendingTransactions(); |
| } |
| |
| public static class ParentFragment extends Fragment { |
| @Nullable |
| @Override |
| public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, |
| @Nullable Bundle savedInstanceState) { |
| return inflater.inflate(R.layout.nested_inflated_fragment_parent, container, false); |
| } |
| } |
| |
| public static class UserVisibleHintParentFragment extends ParentFragment { |
| @Override |
| public void setUserVisibleHint(boolean isVisibleToUser) { |
| super.setUserVisibleHint(isVisibleToUser); |
| if (getHost() != null) { |
| for (Fragment fragment : getChildFragmentManager().getFragments()) { |
| fragment.setUserVisibleHint(isVisibleToUser); |
| } |
| } |
| } |
| |
| @Override |
| public void onAttachFragment(Fragment childFragment) { |
| super.onAttachFragment(childFragment); |
| childFragment.setUserVisibleHint(getUserVisibleHint()); |
| } |
| } |
| |
| public static class InflatedChildFragment extends Fragment { |
| @Nullable |
| @Override |
| public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, |
| @Nullable Bundle savedInstanceState) { |
| return inflater.inflate(R.layout.nested_inflated_fragment_child, container, false); |
| } |
| } |
| |
| public static class SimpleFragment extends Fragment { |
| @Nullable |
| @Override |
| public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, |
| @Nullable Bundle savedInstanceState) { |
| TextView textView = new TextView(inflater.getContext()); |
| textView.setText("Simple fragment"); |
| return textView; |
| } |
| } |
| } |