/*
* Copyright (C) 2014 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.example.android.leanback;
import android.app.Fragment;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.support.v17.leanback.app.GuidedStepFragment;
import android.support.v17.leanback.app.RowsFragment;
import android.support.v17.leanback.widget.ArrayObjectAdapter;
import android.support.v17.leanback.widget.DividerRow;
import android.support.v17.leanback.widget.HeaderItem;
import android.support.v17.leanback.widget.ImageCardView;
import android.support.v17.leanback.widget.ListRow;
import android.support.v17.leanback.widget.ListRowPresenter;
import android.support.v17.leanback.widget.OnItemViewClickedListener;
import android.support.v17.leanback.widget.OnItemViewSelectedListener;
import android.support.v17.leanback.widget.PageRow;
import android.support.v17.leanback.widget.Presenter;
import android.support.v17.leanback.widget.Row;
import android.support.v17.leanback.widget.RowPresenter;
import android.support.v17.leanback.widget.SectionRow;
import android.support.v4.app.ActivityOptionsCompat;
import android.support.v4.content.res.ResourcesCompat;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class BrowseFragment extends android.support.v17.leanback.app.BrowseFragment {
private static final String TAG = "leanback.BrowseFragment";
private static final boolean TEST_ENTRANCE_TRANSITION = true;
private static final int NUM_ROWS = 8;
private static final long HEADER_ID1 = 1001;
private static final long HEADER_ID2 = 1002;
private static final long HEADER_ID3 = 1003;
private ArrayObjectAdapter mRowsAdapter;
private BackgroundHelper mBackgroundHelper;
// For good performance, it's important to use a single instance of
// a card presenter for all rows using that presenter.
final CardPresenter mCardPresenter = new CardPresenter();
final CardPresenter mCardPresenter2 = new CardPresenter(R.style.MyImageCardViewTheme);
public BrowseFragment() {
getMainFragmentRegistry().registerFragment(PageRow.class, new PageRowFragmentFactory());
}
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
mBackgroundHelper = new BackgroundHelper(getActivity());
mBackgroundHelper.attachToWindow();
setBadgeDrawable(ResourcesCompat.getDrawable(getActivity().getResources(),
R.drawable.ic_title, getActivity().getTheme()));
setTitle("Leanback Sample App");
setHeadersState(HEADERS_ENABLED);
setOnSearchClickedListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), SearchActivity.class);
startActivity(intent);
}
});
setOnItemViewClickedListener(new ItemViewClickedListener());
setOnItemViewSelectedListener(new OnItemViewSelectedListener() {
@Override
public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item,
RowPresenter.ViewHolder rowViewHolder, Row row) {
Log.i(TAG, "onItemSelected: " + item + " row " + row);
updateBackgroundToSelection();
}
});
setBrowseTransitionListener(new BrowseTransitionListener() {
@Override
public void onHeadersTransitionStop(boolean withHeaders) {
updateBackgroundToSelection();
}
});
if (TEST_ENTRANCE_TRANSITION) {
// don't run entrance transition if fragment is restored.
if (savedInstanceState == null) {
prepareEntranceTransition();
}
}
// simulates in a real world use case data being loaded two seconds later
new Handler().postDelayed(new Runnable() {
public void run() {
setupRows();
loadData();
startEntranceTransition();
}
}, 2000);
}
@Override
public void onStart() {
super.onStart();
updateBackgroundToSelection();
}
void updateBackgroundToSelection() {
if (!isShowingHeaders()) {
RowPresenter.ViewHolder rowViewHolder = getSelectedRowViewHolder();
Object item = rowViewHolder == null ? null : rowViewHolder.getSelectedItem();
if (item != null) {
mBackgroundHelper.setBackground(((PhotoItem) item).getImageResourceId());
} else {
mBackgroundHelper.clearDrawable();
}
} else {
mBackgroundHelper.clearDrawable();
}
}
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return super.onCreateView(inflater, container, savedInstanceState);
}
private void setupRows() {
ListRowPresenter listRowPresenter = new ListRowPresenter();
listRowPresenter.setNumRows(1);
mRowsAdapter = new ArrayObjectAdapter(listRowPresenter);
setAdapter(mRowsAdapter);
}
private void loadData() {
int i = 0;
mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID1, "Page Row 0")));
mRowsAdapter.add(new DividerRow());
mRowsAdapter.add(new SectionRow(new HeaderItem("section 0")));
for (; i < NUM_ROWS; ++i) {
HeaderItem headerItem = new HeaderItem(i, "Row " + i);
headerItem.setDescription("Description for Row "+i);
mRowsAdapter.add(new ListRow(headerItem, createListRowAdapter(i)));
}
mRowsAdapter.add(new DividerRow());
mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID2, "Page Row 1")));
mRowsAdapter.add(new PageRow(new HeaderItem(HEADER_ID3, "Page Row 2")));
}
private ArrayObjectAdapter createListRowAdapter(int i) {
ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter((i & 1) == 0 ?
mCardPresenter : mCardPresenter2);
listRowAdapter.add(new PhotoItem(
"Hello world",
R.drawable.gallery_photo_1));
listRowAdapter.add(new PhotoItem(
"This is a test",
"Only a test",
R.drawable.gallery_photo_2));
listRowAdapter.add(new PhotoItem(
"Android TV",
"by Google",
R.drawable.gallery_photo_3));
listRowAdapter.add(new PhotoItem(
"Leanback",
R.drawable.gallery_photo_4));
listRowAdapter.add(new PhotoItem(
"GuidedStep (Slide left/right)",
R.drawable.gallery_photo_5));
listRowAdapter.add(new PhotoItem(
"GuidedStep (Slide bottom up)",
"Open GuidedStepFragment",
R.drawable.gallery_photo_6));
listRowAdapter.add(new PhotoItem(
"Android TV",
"open RowsActivity",
R.drawable.gallery_photo_7));
listRowAdapter.add(new PhotoItem(
"Leanback",
"open BrowseActivity",
R.drawable.gallery_photo_8));
listRowAdapter.add(new PhotoItem(
"Hello world",
R.drawable.gallery_photo_1));
listRowAdapter.add(new PhotoItem(
"This is a test",
"Only a test",
R.drawable.gallery_photo_2));
listRowAdapter.add(new PhotoItem(
"Android TV",
"by Google",
R.drawable.gallery_photo_3));
listRowAdapter.add(new PhotoItem(
"Leanback",
R.drawable.gallery_photo_4));
return listRowAdapter;
}
private final class ItemViewClickedListener implements OnItemViewClickedListener {
@Override
public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item,
RowPresenter.ViewHolder rowViewHolder, Row row) {
Intent intent;
Bundle bundle;
if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_6) {
GuidedStepFragment.add(getFragmentManager(),
new GuidedStepHalfScreenActivity.FirstStepFragment(),
R.id.lb_guidedstep_host);
return;
} else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_5) {
GuidedStepFragment.add(getFragmentManager(),
new GuidedStepActivity.FirstStepFragment(), R.id.lb_guidedstep_host);
return;
} else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_8) {
intent = new Intent(getActivity(), BrowseActivity.class);
bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
.toBundle();
} else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_7) {
intent = new Intent(getActivity(), RowsActivity.class);
bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
.toBundle();
} else {
intent = new Intent(getActivity(), DetailsActivity.class);
intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item);
bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(
getActivity(),
((ImageCardView) itemViewHolder.view).getMainImageView(),
DetailsActivity.SHARED_ELEMENT_NAME).toBundle();
}
getActivity().startActivity(intent, bundle);
}
}
public static class PageRowFragmentFactory extends FragmentFactory {
@Override
public Fragment createFragment(Object rowObj) {
Row row = (Row) rowObj;
if (row.getHeaderItem().getId() == HEADER_ID1) {
return new SampleRowsFragment();
} else if (row.getHeaderItem().getId() == HEADER_ID2) {
return new SampleRowsFragment();
} else if (row.getHeaderItem().getId() == HEADER_ID3) {
return new SampleFragment();
}
return null;
}
}
public static class SampleRowsFragment extends RowsFragment {
final CardPresenter mCardPresenter = new CardPresenter();
final CardPresenter mCardPresenter2 = new CardPresenter(R.style.MyImageCardViewTheme);
void loadFragmentData() {
ArrayObjectAdapter adapter = (ArrayObjectAdapter) getAdapter();
for (int i = 0; i < 4; i++) {
ListRow row = new ListRow(new HeaderItem("Row " + i), createListRowAdapter(i));
adapter.add(row);
}
if (getMainFragmentAdapter() != null) {
getMainFragmentAdapter().getFragmentHost()
.notifyDataReady(getMainFragmentAdapter());
}
}
public SampleRowsFragment() {
ArrayObjectAdapter adapter = new ArrayObjectAdapter(new ListRowPresenter());
setAdapter(adapter);
// simulates late data loading:
new Handler().postDelayed(new Runnable() {
public void run() {
loadFragmentData();
}
}, 500);
setOnItemViewClickedListener(new OnItemViewClickedListener() {
@Override
public void onItemClicked(
Presenter.ViewHolder itemViewHolder,
Object item,
RowPresenter.ViewHolder rowViewHolder,
Row row) {
Intent intent;
Bundle bundle;
if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_6) {
GuidedStepFragment.add(getActivity().getFragmentManager(),
new GuidedStepHalfScreenActivity.FirstStepFragment(),
R.id.lb_guidedstep_host);
return;
} else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_5) {
GuidedStepFragment.add(getActivity().getFragmentManager(),
new GuidedStepActivity.FirstStepFragment(), R.id.lb_guidedstep_host);
return;
} else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_8) {
intent = new Intent(getActivity(), BrowseActivity.class);
bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
.toBundle();
} else if (((PhotoItem) item).getImageResourceId() == R.drawable.gallery_photo_7) {
intent = new Intent(getActivity(), RowsActivity.class);
bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity())
.toBundle();
} else {
intent = new Intent(getActivity(), DetailsActivity.class);
intent.putExtra(DetailsActivity.EXTRA_ITEM, (PhotoItem) item);
bundle = ActivityOptionsCompat.makeSceneTransitionAnimation(
getActivity(),
((ImageCardView) itemViewHolder.view).getMainImageView(),
DetailsActivity.SHARED_ELEMENT_NAME).toBundle();
}
getActivity().startActivity(intent, bundle);
}
});
}
private ArrayObjectAdapter createListRowAdapter(int i) {
ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter((i & 1) == 0 ?
mCardPresenter : mCardPresenter2);
listRowAdapter.add(new PhotoItem(
"Hello world",
R.drawable.gallery_photo_1));
listRowAdapter.add(new PhotoItem(
"This is a test",
"Only a test",
R.drawable.gallery_photo_2));
listRowAdapter.add(new PhotoItem(
"Android TV",
"by Google",
R.drawable.gallery_photo_3));
listRowAdapter.add(new PhotoItem(
"Leanback",
R.drawable.gallery_photo_4));
listRowAdapter.add(new PhotoItem(
"GuidedStep (Slide left/right)",
R.drawable.gallery_photo_5));
listRowAdapter.add(new PhotoItem(
"GuidedStep (Slide bottom up)",
"Open GuidedStepFragment",
R.drawable.gallery_photo_6));
listRowAdapter.add(new PhotoItem(
"Android TV",
"open RowsActivity",
R.drawable.gallery_photo_7));
listRowAdapter.add(new PhotoItem(
"Leanback",
"open BrowseActivity",
R.drawable.gallery_photo_8));
return listRowAdapter;
}
}
public static class PageFragmentAdapterImpl extends MainFragmentAdapter<SampleFragment> {
public PageFragmentAdapterImpl(SampleFragment fragment) {
super(fragment);
setScalingEnabled(true);
}
@Override
public void setEntranceTransitionState(boolean state) {
getFragment().setEntranceTransitionState(state);
}
}
public static class SampleFragment extends Fragment implements MainFragmentAdapterProvider {
final PageFragmentAdapterImpl mMainFragmentAdapter = new PageFragmentAdapterImpl(this);
public void setEntranceTransitionState(boolean state) {
final View view = getView();
int visibility = state ? View.VISIBLE : View.INVISIBLE;
view.findViewById(R.id.tv1).setVisibility(visibility);
view.findViewById(R.id.tv2).setVisibility(visibility);
view.findViewById(R.id.tv3).setVisibility(visibility);
}
@Override
public View onCreateView(
final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.page_fragment, container, false);
view.findViewById(R.id.tv1).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(inflater.getContext(), GuidedStepActivity.class);
startActivity(intent);
}
});
return view;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// static layout has view and data ready immediately
mMainFragmentAdapter.getFragmentHost().notifyViewCreated(mMainFragmentAdapter);
mMainFragmentAdapter.getFragmentHost().notifyDataReady(mMainFragmentAdapter);
}
@Override
public MainFragmentAdapter getMainFragmentAdapter() {
return mMainFragmentAdapter;
}
}
}