DetailsActivity.java

/*
 * Copyright 2011-2013, Institute of Cybernetics at Tallinn University of Technology
 *
 * 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 ee.ioc.phon.android.speak.activity;

import android.app.ListActivity;
import android.app.SearchManager;
import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import android.widget.Toast;

import ee.ioc.phon.android.speak.R;

/**
 * <p>Simple activity that displays the String-array attached to the intent and plays the
 * audio data contained in the intent data.
 * Not really meant for the end-users.</p>
 *
 * @author Kaarel Kaljurand
 */
public class DetailsActivity extends ListActivity {

    public static final String EXTRA_TITLE = "EXTRA_TITLE";
    public static final String EXTRA_STRING_ARRAY = "EXTRA_STRING_ARRAY";

    private MediaPlayer mMediaPlayer;
    private boolean mIsFinishAfterPlayAudio = false;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Intent intent = getIntent();
        Bundle extras = intent.getExtras();

        if (extras == null) {
            requestWindowFeature(Window.FEATURE_NO_TITLE);
            mIsFinishAfterPlayAudio = true;
        }

        Uri audioUri = intent.getData();
        if (audioUri != null) {
            playAudio(audioUri, intent.getType());
        }

        if (extras != null) {
            String title = extras.getString(EXTRA_TITLE);
            if (title == null) {
                requestWindowFeature(Window.FEATURE_NO_TITLE);
            } else {
                setTitle(title);
            }
            String[] stringArray = extras.getStringArray(EXTRA_STRING_ARRAY);
            if (stringArray != null) {
                setListAdapter(new ArrayAdapter<>(this, R.layout.list_item_detail, stringArray));

                getListView().setOnItemClickListener(new OnItemClickListener() {
                    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                        Intent intent = new Intent();
                        intent.putExtra(SearchManager.QUERY, ((TextView) view).getText());
                        setResult(RESULT_OK, intent);
                        finish();
                    }
                });
            }
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        releasePlayer();
    }

    /**
     * @param uri audio URI to be played
     */
    private void playAudio(Uri uri, String type) {
        mMediaPlayer = MediaPlayer.create(this, uri);
        if (mMediaPlayer == null) {
            // create can return null, e.g. on Android Wear
            toast(String.format(getString(R.string.errorFailedPlayAudio), uri.toString(), type));
        } else {
            int duration = mMediaPlayer.getDuration();
            mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                @Override
                public void onCompletion(MediaPlayer mediaPlayer) {
                    releasePlayer();
                    toast(getString(R.string.toastPlayingAudioDone));
                    if (mIsFinishAfterPlayAudio) {
                        finish();
                    }
                }
            });
            mMediaPlayer.start();
            toast(String.format(getString(R.string.toastPlayingAudio), uri.toString(), type, duration));
        }
    }

    private void toast(String message) {
        Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
    }

    private void releasePlayer() {
        if (mMediaPlayer != null) {
            mMediaPlayer.release();
            mMediaPlayer = null;
        }
    }
}