Android Open Source - BuildingForAndroidTV T V Demo Fragment

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License

The source code is released under:
MIT License
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Java Source Code

package com.sgottard.tvdemoapp;
/*from   w  ww .  ja  v a2s. c om*/
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.support.v17.leanback.app.BackgroundManager;
import android.support.v17.leanback.app.BrowseFragment;
import android.support.v17.leanback.widget.ArrayObjectAdapter;
import android.support.v17.leanback.widget.HeaderItem;
import android.support.v17.leanback.widget.ListRow;
import android.support.v17.leanback.widget.ListRowPresenter;
import android.support.v17.leanback.widget.OnItemClickedListener;
import android.support.v17.leanback.widget.OnItemSelectedListener;
import android.support.v17.leanback.widget.Presenter;
import android.support.v17.leanback.widget.Row;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

import com.squareup.picasso.Picasso;
import com.squareup.picasso.Target;

import java.net.URI;
import java.util.Collections;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;


public class TVDemoFragment extends BrowseFragment {
    private static final String TAG = "TVDemoFragment";

    private static final int NUM_ROWS = 6;
    private static final int NUM_COLS = 15;

    private ArrayObjectAdapter mRowsAdapter;
    private Drawable mDefaultBackground;
    private Target mBackgroundTarget;
    private DisplayMetrics mMetrics;
    private Timer mBackgroundTimer;
    private final Handler mHandler = new Handler();
    private URI mBackgroundURI;
    Movie mMovie;
    CardPresenter mCardPresenter;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        Log.i(TAG, "onCreate");
        super.onActivityCreated(savedInstanceState);

        prepareBackgroundManager();

        setupUIElements();

        loadRows();

        setupEventListeners();
    }

    private void loadRows() {
        List<Movie> list = MovieList.setupMovies();

        mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
        mCardPresenter = new CardPresenter();

        int i;
        for (i = 0; i < NUM_ROWS; i++) {
            if (i != 0) {
                Collections.shuffle(list);
            }
            ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(mCardPresenter);
            for (int j = 0; j < NUM_COLS; j++) {
                listRowAdapter.add(list.get(j % 5));
            }
            HeaderItem header = new HeaderItem(i, MovieList.MOVIE_CATEGORY[i], null);
            mRowsAdapter.add(new ListRow(header, listRowAdapter));
        }

        HeaderItem gridHeader = new HeaderItem(i, "PREFERENCES", null);

        GridItemPresenter mGridPresenter = new GridItemPresenter();
        ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
        gridRowAdapter.add(getResources().getString(R.string.grid_view));
        gridRowAdapter.add(getResources().getString(R.string.send_feeback));
        gridRowAdapter.add(getResources().getString(R.string.personal_settings));
        mRowsAdapter.add(new ListRow(gridHeader, gridRowAdapter));

        setAdapter(mRowsAdapter);

    }

    private void prepareBackgroundManager() {

        BackgroundManager backgroundManager = BackgroundManager.getInstance(getActivity());
        backgroundManager.attach(getActivity().getWindow());
        mBackgroundTarget = new PicassoBackgroundManagerTarget(backgroundManager);

        mDefaultBackground = getResources().getDrawable(R.drawable.default_background);

        mMetrics = new DisplayMetrics();
        getActivity().getWindowManager().getDefaultDisplay().getMetrics(mMetrics);
    }

    private void setupUIElements() {
        // setBadgeDrawable(getActivity().getResources().getDrawable(
        // R.drawable.videos_by_google_banner));
        setTitle(getString(R.string.browse_title)); // Badge, when set, takes precedent
                                                    // over title
        setHeadersState(HEADERS_ENABLED);
        setHeadersTransitionOnBackEnabled(true);

        // set fastLane (or headers) background color
        setBrandColor(getResources().getColor(R.color.fastlane_background));
        // set search icon color
        setSearchAffordanceColor(getResources().getColor(R.color.search_opaque));
    }

    private void setupEventListeners() {
        setOnItemSelectedListener(getDefaultItemSelectedListener());
        setOnItemClickedListener(getDefaultItemClickedListener());
        setOnSearchClickedListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(getActivity(), TVSearchActivity.class);
        startActivity(intent);
            }
        });
    }

    protected OnItemSelectedListener getDefaultItemSelectedListener() {
        return new OnItemSelectedListener() {
            @Override
            public void onItemSelected(Object item, Row row) {
                if (item instanceof Movie) {
                    mBackgroundURI = ((Movie) item).getBackgroundImageURI();
                    startBackgroundTimer();
                }
            }
        };
    }

    protected OnItemClickedListener getDefaultItemClickedListener() {
        return new OnItemClickedListener() {
            @Override
            public void onItemClicked(Object item, Row row) {
                if (item instanceof Movie) {
                    Movie movie = (Movie) item;
                    Log.d(TAG, "Item: " + item.toString());
                    Intent intent = new Intent(getActivity(), TVDetailsActivity.class);
                    intent.putExtra(getString(R.string.movie), movie);
                    startActivity(intent);
                }
                else if (item instanceof String) {
          if (((String) item).contains("Grid")) {
            Intent intent = new Intent(getActivity(), TVGridActivity.class);
            startActivity(intent);
          } else {
            Toast.makeText(getActivity(), (String) item, Toast.LENGTH_SHORT).show();
          }
                }
            }
        };
    }

    protected void setDefaultBackground(Drawable background) {
        mDefaultBackground = background;
    }

    protected void setDefaultBackground(int resourceId) {
        mDefaultBackground = getResources().getDrawable(resourceId);
    }

    protected void updateBackground(URI uri) {
        Picasso.with(getActivity())
                .load(uri.toString())
                .resize(mMetrics.widthPixels, mMetrics.heightPixels)
                .centerCrop()
                .error(mDefaultBackground)
                .into(mBackgroundTarget);
    }

    protected void updateBackground(Drawable drawable) {
        BackgroundManager.getInstance(getActivity()).setDrawable(drawable);
    }

    protected void clearBackground() {
        BackgroundManager.getInstance(getActivity()).setDrawable(mDefaultBackground);
    }

    private void startBackgroundTimer() {
        if (null != mBackgroundTimer) {
            mBackgroundTimer.cancel();
        }
        mBackgroundTimer = new Timer();
        mBackgroundTimer.schedule(new UpdateBackgroundTask(), 300);
    }

    private class UpdateBackgroundTask extends TimerTask {

        @Override
        public void run() {
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    if (mBackgroundURI != null) {
                        updateBackground(mBackgroundURI);
                    }
                }
            });

        }
    }

    private class GridItemPresenter extends Presenter {
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent) {
            TextView view = new TextView(parent.getContext());
            view.setLayoutParams(new ViewGroup.LayoutParams(200, 200));
            view.setFocusable(true);
            view.setFocusableInTouchMode(true);
            view.setBackgroundColor(getResources().getColor(R.color.default_background));
            view.setTextColor(Color.WHITE);
            view.setGravity(Gravity.CENTER);
            return new ViewHolder(view);
        }

        @Override
        public void onBindViewHolder(ViewHolder viewHolder, Object item) {
            ((TextView) viewHolder.view).setText((String) item);
        }

        @Override
        public void onUnbindViewHolder(ViewHolder viewHolder) {
        }
    }

}
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