PlayerControlsDemoActivity.java

/*
 * Copyright 2012 Google Inc. All Rights Reserved.
 *
 * 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.examples.youtubeapidemo;

import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayer.ErrorReason;
import com.google.android.youtube.player.YouTubePlayer.PlaybackEventListener;
import com.google.android.youtube.player.YouTubePlayer.PlayerStateChangeListener;
import com.google.android.youtube.player.YouTubePlayer.PlayerStyle;
import com.google.android.youtube.player.YouTubePlayer.PlaylistEventListener;
import com.google.android.youtube.player.YouTubePlayerView;

import android.content.Context;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;

/**
 * A simple YouTube Android API demo application demonstrating the use of {@link YouTubePlayer}
 * programmatic controls.
 */
public class PlayerControlsDemoActivity extends YouTubeFailureRecoveryActivity implements
    View.OnClickListener,
    TextView.OnEditorActionListener,
    CompoundButton.OnCheckedChangeListener,
    AdapterView.OnItemSelectedListener {

  private static final ListEntry[] ENTRIES = {
      new ListEntry("Androidify App", "irH3OSOskcE", false),
      new ListEntry("Chrome Speed Tests", "nCgQDjiotG0", false),
      new ListEntry("Playlist: Google I/O 2012", "PL56D792A831D0C362", true)};

  private static final String KEY_CURRENTLY_SELECTED_ID = "currentlySelectedId";

  private YouTubePlayerView youTubePlayerView;
  private YouTubePlayer player;
  private TextView stateText;
  private ArrayAdapter<ListEntry> videoAdapter;
  private Spinner videoChooser;
  private Button playButton;
  private Button pauseButton;
  private EditText skipTo;
  private TextView eventLog;
  private StringBuilder logString;
  private RadioGroup styleRadioGroup;

  private MyPlaylistEventListener playlistEventListener;
  private MyPlayerStateChangeListener playerStateChangeListener;
  private MyPlaybackEventListener playbackEventListener;

  private int currentlySelectedPosition;
  private String currentlySelectedId;

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

    setContentView(R.layout.player_controls_demo);

    youTubePlayerView = (YouTubePlayerView) findViewById(R.id.youtube_view);
    stateText = (TextView) findViewById(R.id.state_text);
    videoChooser = (Spinner) findViewById(R.id.video_chooser);
    playButton = (Button) findViewById(R.id.play_button);
    pauseButton = (Button) findViewById(R.id.pause_button);
    skipTo = (EditText) findViewById(R.id.skip_to_text);
    eventLog = (TextView) findViewById(R.id.event_log);

    styleRadioGroup = (RadioGroup) findViewById(R.id.style_radio_group);
    ((RadioButton) findViewById(R.id.style_default)).setOnCheckedChangeListener(this);
    ((RadioButton) findViewById(R.id.style_minimal)).setOnCheckedChangeListener(this);
    ((RadioButton) findViewById(R.id.style_chromeless)).setOnCheckedChangeListener(this);
    logString = new StringBuilder();

    videoAdapter = new ArrayAdapter<ListEntry>(this, android.R.layout.simple_spinner_item, ENTRIES);
    videoAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    videoChooser.setOnItemSelectedListener(this);
    videoChooser.setAdapter(videoAdapter);

    playButton.setOnClickListener(this);
    pauseButton.setOnClickListener(this);
    skipTo.setOnEditorActionListener(this);

    youTubePlayerView.initialize(DeveloperKey.DEVELOPER_KEY, this);

    playlistEventListener = new MyPlaylistEventListener();
    playerStateChangeListener = new MyPlayerStateChangeListener();
    playbackEventListener = new MyPlaybackEventListener();

    setControlsEnabled(false);
  }

  @Override
  public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
      boolean wasRestored) {
    this.player = player;
    player.setPlaylistEventListener(playlistEventListener);
    player.setPlayerStateChangeListener(playerStateChangeListener);
    player.setPlaybackEventListener(playbackEventListener);

    if (!wasRestored) {
      playVideoAtSelection();
    }
    setControlsEnabled(true);
  }

  @Override
  protected YouTubePlayer.Provider getYouTubePlayerProvider() {
    return youTubePlayerView;
  }

  private void playVideoAtSelection() {
    ListEntry selectedEntry = videoAdapter.getItem(currentlySelectedPosition);
    if (selectedEntry.id != currentlySelectedId && player != null) {
      currentlySelectedId = selectedEntry.id;
      if (selectedEntry.isPlaylist) {
        player.cuePlaylist(selectedEntry.id);
      } else {
        player.cueVideo(selectedEntry.id);
      }
    }
  }

  @Override
  public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
    currentlySelectedPosition = pos;
    playVideoAtSelection();
  }

  @Override
  public void onNothingSelected(AdapterView<?> parent) {
    // Do nothing.
  }

  @Override
  public void onClick(View v) {
    if (v == playButton) {
      player.play();
    } else if (v == pauseButton) {
      player.pause();
    }
  }

  @Override
  public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
    if (v == skipTo) {
      int skipToSecs = parseInt(skipTo.getText().toString(), 0);
      player.seekToMillis(skipToSecs * 1000);
      InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
      imm.hideSoftInputFromWindow(skipTo.getWindowToken(), 0);
      return true;
    }
    return false;
  }

  @Override
  public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    if (isChecked && player != null) {
      switch (buttonView.getId()) {
        case R.id.style_default:
          player.setPlayerStyle(PlayerStyle.DEFAULT);
          break;
        case R.id.style_minimal:
          player.setPlayerStyle(PlayerStyle.MINIMAL);
          break;
        case R.id.style_chromeless:
          player.setPlayerStyle(PlayerStyle.CHROMELESS);
          break;
      }
    }
  }

  @Override
  protected void onSaveInstanceState(Bundle state) {
    super.onSaveInstanceState(state);
    state.putString(KEY_CURRENTLY_SELECTED_ID, currentlySelectedId);
  }

  @Override
  protected void onRestoreInstanceState(Bundle state) {
    super.onRestoreInstanceState(state);
    currentlySelectedId = state.getString(KEY_CURRENTLY_SELECTED_ID);
  }

  private void updateText() {
    stateText.setText(String.format("Current state: %s %s %s",
        playerStateChangeListener.playerState, playbackEventListener.playbackState,
        playbackEventListener.bufferingState));
  }

  private void log(String message) {
    logString.append(message + "\n");
    eventLog.setText(logString);
  }

  private void setControlsEnabled(boolean enabled) {
    playButton.setEnabled(enabled);
    pauseButton.setEnabled(enabled);
    skipTo.setEnabled(enabled);
    videoChooser.setEnabled(enabled);
    for (int i = 0; i < styleRadioGroup.getChildCount(); i++) {
      styleRadioGroup.getChildAt(i).setEnabled(enabled);
    }
  }

  private static final int parseInt(String intString, int defaultValue) {
    try {
      return intString != null ? Integer.valueOf(intString) : defaultValue;
    } catch (NumberFormatException e) {
      return defaultValue;
    }
  }

  private String formatTime(int millis) {
    int seconds = millis / 1000;
    int minutes = seconds / 60;
    int hours = minutes / 60;

    return (hours == 0 ? "" : hours + ":")
        + String.format("%02d:%02d", minutes % 60, seconds % 60);
  }

  private String getTimesText() {
    int currentTimeMillis = player.getCurrentTimeMillis();
    int durationMillis = player.getDurationMillis();
    return String.format("(%s/%s)", formatTime(currentTimeMillis), formatTime(durationMillis));
  }

  private final class MyPlaylistEventListener implements PlaylistEventListener {
    @Override
    public void onNext() {
      log("NEXT VIDEO");
    }

    @Override
    public void onPrevious() {
      log("PREVIOUS VIDEO");
    }

    @Override
    public void onPlaylistEnded() {
      log("PLAYLIST ENDED");
    }
  }

  private final class MyPlaybackEventListener implements PlaybackEventListener {
    String playbackState = "NOT_PLAYING";
    String bufferingState = "";
    @Override
    public void onPlaying() {
      playbackState = "PLAYING";
      updateText();
      log("\tPLAYING " + getTimesText());
    }

    @Override
    public void onBuffering(boolean isBuffering) {
      bufferingState = isBuffering ? "(BUFFERING)" : "";
      updateText();
      log("\t\t" + (isBuffering ? "BUFFERING " : "NOT BUFFERING ") + getTimesText());
    }

    @Override
    public void onStopped() {
      playbackState = "STOPPED";
      updateText();
      log("\tSTOPPED");
    }

    @Override
    public void onPaused() {
      playbackState = "PAUSED";
      updateText();
      log("\tPAUSED " + getTimesText());
    }

    @Override
    public void onSeekTo(int endPositionMillis) {
      log(String.format("\tSEEKTO: (%s/%s)",
          formatTime(endPositionMillis),
          formatTime(player.getDurationMillis())));
    }
  }

  private final class MyPlayerStateChangeListener implements PlayerStateChangeListener {
    String playerState = "UNINITIALIZED";

    @Override
    public void onLoading() {
      playerState = "LOADING";
      updateText();
      log(playerState);
    }

    @Override
    public void onLoaded(String videoId) {
      playerState = String.format("LOADED %s", videoId);
      updateText();
      log(playerState);
    }

    @Override
    public void onAdStarted() {
      playerState = "AD_STARTED";
      updateText();
      log(playerState);
    }

    @Override
    public void onVideoStarted() {
      playerState = "VIDEO_STARTED";
      updateText();
      log(playerState);
    }

    @Override
    public void onVideoEnded() {
      playerState = "VIDEO_ENDED";
      updateText();
      log(playerState);
    }

    @Override
    public void onError(ErrorReason reason) {
      playerState = "ERROR (" + reason + ")";
      if (reason == ErrorReason.UNEXPECTED_SERVICE_DISCONNECTION) {
        // When this error occurs the player is released and can no longer be used.
        player = null;
        setControlsEnabled(false);
      }
      updateText();
      log(playerState);
    }

  }

  private static final class ListEntry {

    public final String title;
    public final String id;
    public final boolean isPlaylist;

    public ListEntry(String title, String videoId, boolean isPlaylist) {
      this.title = title;
      this.id = videoId;
      this.isPlaylist = isPlaylist;
    }

    @Override
    public String toString() {
      return title;
    }

  }

}