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corochanncorochann
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1. Icon on header
Model: IconHeaderItem View: icon_header_item.xml Presenter: IconHeaderItemPresenter 2. Refactoring of loadRows(), setRows()
1 parent 2bcde4e commit 028a6b0

14 files changed

Lines changed: 185 additions & 38 deletions

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‎app/src/main/java/com/corochann/androidtvapptutorial/model/IconHeaderItem.java‎

Lines changed: 40 additions & 0 deletions
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package com.corochann.androidtvapptutorial.model;
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import android.support.v17.leanback.widget.HeaderItem;
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import com.corochann.androidtvapptutorial.ui.presenter.IconHeaderItemPresenter;
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/**
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* Subclass of {@link HeaderItem} to hold icon resource id
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* to show icon on header with {@link IconHeaderItemPresenter}
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*/
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public class IconHeaderItem extends HeaderItem {
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private static final String TAG = IconHeaderItem.class.getSimpleName();
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public static final int ICON_NONE = -1;
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/** Hold an icon resource id */
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private int mIconResId = ICON_NONE;
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public IconHeaderItem(long id, String name, int iconResId) {
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super(id, name);
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mIconResId = iconResId;
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}
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public IconHeaderItem(long id, String name) {
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this(id, name, ICON_NONE);
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}
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public IconHeaderItem(String name) {
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super(name);
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}
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public int getIconResId() {
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return mIconResId;
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}
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public void setIconResId(int iconResId) {
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this.mIconResId = iconResId;
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}
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}

‎app/src/main/java/com/corochann/androidtvapptutorial/ui/MainFragment.java‎

Lines changed: 44 additions & 38 deletions
Original file line numberDiff line numberDiff line change
@@ -9,12 +9,12 @@
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import android.os.SystemClock;
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import android.support.v17.leanback.app.BrowseFragment;
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import android.support.v17.leanback.widget.ArrayObjectAdapter;
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import android.support.v17.leanback.widget.HeaderItem;
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import android.support.v17.leanback.widget.ListRow;
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import android.support.v17.leanback.widget.ListRowPresenter;
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import android.support.v17.leanback.widget.OnItemViewClickedListener;
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import android.support.v17.leanback.widget.OnItemViewSelectedListener;
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import android.support.v17.leanback.widget.Presenter;
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import android.support.v17.leanback.widget.PresenterSelector;
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import android.support.v17.leanback.widget.Row;
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import android.support.v17.leanback.widget.RowPresenter;
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import android.support.v4.app.NotificationCompat;
@@ -27,10 +27,12 @@
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import com.corochann.androidtvapptutorial.R;
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import com.corochann.androidtvapptutorial.data.VideoItemLoader;
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import com.corochann.androidtvapptutorial.model.IconHeaderItem;
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import com.corochann.androidtvapptutorial.model.Movie;
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import com.corochann.androidtvapptutorial.recommendation.RecommendationFactory;
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import com.corochann.androidtvapptutorial.ui.background.PicassoBackgroundManager;
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import com.corochann.androidtvapptutorial.ui.presenter.CardPresenter;
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import com.corochann.androidtvapptutorial.ui.presenter.IconHeaderItemPresenter;
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import java.util.ArrayList;
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import java.util.LinkedHashMap;
@@ -43,7 +45,10 @@
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public class MainFragment extends BrowseFragment {
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private static final String TAG = MainFragment.class.getSimpleName();
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/* Adapter and ListRows */
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private ArrayObjectAdapter mRowsAdapter;
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private ListRow mGridItemListRow;
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ArrayList<ListRow> mVideoListRowArray;
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/* Grid row item settings */
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private static final int GRID_ITEM_WIDTH = 300;
@@ -67,16 +72,18 @@ public void onActivityCreated(Bundle savedInstanceState) {
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setupUIElements();
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/* Set up rows with light data. done in main thread. */
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loadRows();
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setRows();
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/* Set up rows with heavy data (data from web, content provider etc) is done in background thread using Loader */
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LoaderManager.enableDebugLogging(true);
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getLoaderManager().initLoader(VIDEO_ITEM_LOADER_ID, null, new MainFragmentLoaderCallbacks());
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setupEventListeners();
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picassoBackgroundManager = new PicassoBackgroundManager(getActivity());
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picassoBackgroundManager.updateBackgroundWithDelay();
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//picassoBackgroundManager.updateBackgroundWithDelay("http://heimkehrend.raindrop.jp/kl-hacker/wp-content/uploads/2014/10/RIMG0656.jpg");
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}
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private void setupEventListeners() {
@@ -155,39 +162,50 @@ private void setupUIElements() {
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setBrandColor(getResources().getColor(R.color.fastlane_background));
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// set search icon color
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setSearchAffordanceColor(getResources().getColor(R.color.search_opaque));
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}
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setHeaderPresenterSelector(new PresenterSelector() {
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@Override
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public Presenter getPresenter(Object o) {
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return new IconHeaderItemPresenter();
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}
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});
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}
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/**
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* only load rows which can be prepared (executed in main thread) instantaneously.
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* UI update is done in {@link #setRows}
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*/
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private void loadRows() {
163-
mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
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/* GridItemPresenter */
166-
HeaderItem gridItemPresenterHeader = new HeaderItem(0, "GridItemPresenter");
180+
IconHeaderItem gridItemPresenterHeader = new IconHeaderItem(0, "GridItemPresenter", R.drawable.ic_add_white_48dp);
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GridItemPresenter mGridPresenter = new GridItemPresenter();
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ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
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gridRowAdapter.add(GRID_STRING_ERROR_FRAGMENT);
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gridRowAdapter.add(GRID_STRING_GUIDED_STEP_FRAGMENT);
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gridRowAdapter.add(GRID_STRING_RECOMMENDATION);
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gridRowAdapter.add(GRID_STRING_SPINNER);
174-
mRowsAdapter.add(new ListRow(gridItemPresenterHeader, gridRowAdapter));
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mGridItemListRow = new ListRow(gridItemPresenterHeader, gridRowAdapter);
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}
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/* CardPresenter */
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/*
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HeaderItem cardPresenterHeader = new HeaderItem(1, "CardPresenter");
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CardPresenter cardPresenter = new CardPresenter();
180-
ArrayObjectAdapter cardRowAdapter = new ArrayObjectAdapter(cardPresenter);
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/**
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* Updates UI after loading Row done.
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*/
194+
private void setRows() {
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mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter()); // Initialize
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182-
for (Movie movie : mItems) {
183-
cardRowAdapter.add(movie);
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if(mVideoListRowArray != null) {
198+
for (ListRow videoListRow : mVideoListRowArray) {
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mRowsAdapter.add(videoListRow);
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}
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}
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if(mGridItemListRow != null) {
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mRowsAdapter.add(mGridItemListRow);
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}
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186-
mRowsAdapter.add(new ListRow(cardPresenterHeader, cardRowAdapter));
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*/
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/* Set */
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setAdapter(mRowsAdapter);
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}
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private class MainFragmentLoaderCallbacks implements LoaderManager.LoaderCallbacks<LinkedHashMap<String, List<Movie>>> {
@@ -214,22 +232,9 @@ public void onLoadFinished(Loader<LinkedHashMap<String, List<Movie>>> loader, Li
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/* Hold data reference to use it for recommendation */
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mItems = new ArrayList<Movie>();
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217-
mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
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int index = 0;
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/* GridItemPresenter */
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HeaderItem gridItemPresenterHeader = new HeaderItem(index, "GridItemPresenter");
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index++;
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GridItemPresenter mGridPresenter = new GridItemPresenter();
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ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
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gridRowAdapter.add(GRID_STRING_ERROR_FRAGMENT);
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gridRowAdapter.add(GRID_STRING_GUIDED_STEP_FRAGMENT);
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gridRowAdapter.add(GRID_STRING_RECOMMENDATION);
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gridRowAdapter.add(GRID_STRING_SPINNER);
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mRowsAdapter.add(new ListRow(gridItemPresenterHeader, gridRowAdapter));
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/* CardPresenter */
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/* loadRows: videoListRow - CardPresenter */
236+
int index = 1;
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mVideoListRowArray = new ArrayList<>();
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CardPresenter cardPresenter = new CardPresenter();
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235240
if (null != data) {
@@ -242,15 +247,16 @@ public void onLoadFinished(Loader<LinkedHashMap<String, List<Movie>>> loader, Li
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cardRowAdapter.add(movie);
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mItems.add(movie); // Add movie reference for recommendation purpose.
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}
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HeaderItem header = new HeaderItem(index, entry.getKey());
250+
IconHeaderItem header = new IconHeaderItem(index, entry.getKey(), R.drawable.ic_play_arrow_white_48dp);
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index++;
247-
mRowsAdapter.add(new ListRow(header, cardRowAdapter));
252+
mVideoListRowArray.add(new ListRow(header, cardRowAdapter));
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}
249254
} else {
250255
Log.e(TAG, "An error occurred fetching videos");
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}
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/* Set */
253-
setAdapter(mRowsAdapter);
259+
setRows();
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}
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}
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‎app/src/main/java/com/corochann/androidtvapptutorial/ui/presenter/IconHeaderItemPresenter.java‎

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package com.corochann.androidtvapptutorial.ui.presenter;
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import android.content.Context;
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import android.graphics.drawable.Drawable;
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import android.support.v17.leanback.widget.ListRow;
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import android.support.v17.leanback.widget.Presenter;
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import android.support.v17.leanback.widget.RowHeaderPresenter;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import android.widget.TextView;
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import com.corochann.androidtvapptutorial.R;
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import com.corochann.androidtvapptutorial.model.IconHeaderItem;
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/**
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* Customized HeaderItem Presenter to show {@link IconHeaderItem}
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*/
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public class IconHeaderItemPresenter extends RowHeaderPresenter {
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private static final String TAG = IconHeaderItemPresenter.class.getSimpleName();
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private float mUnselectedAlpha;
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@Override
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public ViewHolder onCreateViewHolder(ViewGroup viewGroup) {
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mUnselectedAlpha = viewGroup.getResources()
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.getFraction(R.fraction.lb_browse_header_unselect_alpha, 1, 1);
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LayoutInflater inflater = (LayoutInflater) viewGroup.getContext()
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.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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View view = inflater.inflate(R.layout.icon_header_item, null);
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return new ViewHolder(view);
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}
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@Override
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public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object o) {
40+
IconHeaderItem iconHeaderItem = (IconHeaderItem) ((ListRow) o).getHeaderItem();
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View rootView = viewHolder.view;
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43+
ImageView iconView = (ImageView) rootView.findViewById(R.id.header_icon);
44+
int iconResId = iconHeaderItem.getIconResId();
45+
if( iconResId != IconHeaderItem.ICON_NONE) { // Show icon only when it is set.
46+
Drawable icon = rootView.getResources().getDrawable(iconResId, null);
47+
iconView.setImageDrawable(icon);
48+
}
49+
50+
TextView label = (TextView) rootView.findViewById(R.id.header_label);
51+
label.setText(iconHeaderItem.getName());
52+
}
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54+
@Override
55+
public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
56+
// no op
57+
}
58+
59+
// TODO: TEMP - remove me when leanback onCreateViewHolder no longer sets the mUnselectAlpha,AND
60+
// also assumes the xml inflation will return a RowHeaderView
61+
@Override
62+
protected void onSelectLevelChanged(RowHeaderPresenter.ViewHolder holder) {
63+
// this is a temporary fix
64+
holder.view.setAlpha(mUnselectedAlpha + holder.getSelectLevel() *
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(1.0f - mUnselectedAlpha));
66+
}
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68+
}

‎app/src/main/res/drawable-hdpi/ic_add_white_48dp.png‎

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‎app/src/main/res/drawable-hdpi/ic_play_arrow_white_48dp.png‎

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‎app/src/main/res/drawable-mdpi/ic_add_white_48dp.png‎

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‎app/src/main/res/drawable-mdpi/ic_play_arrow_white_48dp.png‎

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‎app/src/main/res/drawable-xhdpi/ic_add_white_48dp.png‎

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‎app/src/main/res/drawable-xhdpi/ic_play_arrow_white_48dp.png‎

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‎app/src/main/res/drawable-xxhdpi/ic_add_white_48dp.png‎

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