android，Exoplayer实现视频播放器

【android，Exoplayer实现视频播放器】恢弘志士之气，不宜妄自菲薄。这篇文章主要讲述android，Exoplayer实现视频播放器相关的知识，希望能为你提供帮助。

bundle配置：

implementation ‘com.google.android.exoplayer:exoplayer-core:2.8.1‘
implementation ‘com.google.android.exoplayer:exoplayer-dash:2.8.1‘
implementation ‘com.google.android.exoplayer:exoplayer-ui:2.8.1‘

show Dialogfragment:
Fragment prev = getCurrentActivity().getFragmentManager().findFragmentByTag("VideoDialogFragment");
if(prev!=null){
DialogFragment diaFragment = (DialogFragment)prev;
diaFragment.dismiss();
}
VideoPlayerFragment dialogFragment = new VideoPlayerFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("videoUrl",视频地址);
bundle.putSerializable("videoName",视频名字);
dialogFragment.setArguments(bundle);
dialogFragment.show(getCurrentActivity().getFragmentManager(), "VideoDialogFragment");

DialogFragment:

public class VideoPlayerFragment extends DialogFragment { private ImageView screenImageView; private ImageView changeVoiceView; private TextView textVideoName; private LinearLayout mainVideoLayout; private LinearLayout videoLayout; private Window window; private Dialog dialog; private String videoUrl = null; private String videoName = null; private boolean isAllScreen = false; private boolean isOpenSound = true; private boolean isVideoMode = false; private int resumeWindow; private long resumePosition; private int videoScreenWidth; private int videoScreenHeight; private static Handler handler = new Handler(); private SimpleExoPlayerView simpleExoPlayerView; private BandwidthMeter bandwidthMeter; private TrackSelection.Factory videoTrackSelectionFactory; private TrackSelector trackSelector; private SimpleExoPlayer player; @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); initPlayer(); }private void initPlayer() { Common.silentSwitch(true); bandwidthMeter = new DefaultBandwidthMeter(); //创建带宽 videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter); //创建轨道工厂 trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory); //创建轨道选择器实例 setStyle(DialogFragment.STYLE_NO_TITLE, R.style.VideoTheme); if (ScreenUtils.isLandscape()) { videoScreenWidth = 900; videoScreenHeight = 620; } else { videoScreenWidth = 880; videoScreenHeight = 1564; } }@Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.activity_exo_player, container); Bundle bundle = getArguments(); if (bundle != null) { videoUrl = (String) bundle.getSerializable("videoUrl"); videoName = (String) bundle.getSerializable("videoName"); isVideoMode = (Boolean) bundle.getSerializable("isVideoMode"); }dialog = getDialog(); dialog.setCanceledOnTouchOutside(true); dialog.setCancelable(true); window = dialog.getWindow(); window.setBackgroundDrawableResource(android.R.color.transparent); window.getDecorView().setPadding(0, 0, 0, 0); //获得窗体的属性 WindowManager.LayoutParams lp = window.getAttributes(); lp.gravity = Gravity.CENTER; lp.width = videoScreenWidth; lp.height = videoScreenHeight; window.setAttributes(lp); initView(view); openPlayer(view); startPlayer(); return view; }private void initView(View view) { simpleExoPlayerView = (SimpleExoPlayerView) view.findViewById(R.id.simpleExoPlayerView); screenImageView = (ImageView) view.findViewById(R.id.btnAllScreen); mainVideoLayout = (LinearLayout) view.findViewById(R.id.mainVideoLayout); videoLayout = (LinearLayout) view.findViewById(R.id.videoLayout); textVideoName = (TextView) view.findViewById(R.id.videoName); if (!TextUtils.isEmpty(videoName)) { textVideoName.setText("当前正在播放：" + videoName); } if (isVideoMode) { screenImageView.setEnabled(false); } else { screenImageView.setEnabled(true); } changeVoiceView = (ImageView) view.findViewById(R.id.btnChangeVoice); changeVoiceView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (isOpenSound) { changeVoiceView.setImageResource(R.drawable.mute_btn); Common.silentSwitch(isOpenSound); isOpenSound = false; } else { changeVoiceView.setImageResource(R.drawable.voice_btn); Common.silentSwitch(isOpenSound); isOpenSound = true; } } }); screenImageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (isAllScreen) { window = dialog.getWindow(); //获得窗体的属性 WindowManager.LayoutParams lp = window.getAttributes(); lp.gravity = Gravity.CENTER; lp.width = videoScreenWidth; lp.height = videoScreenHeight; window.setAttributes(lp); screenImageView.setImageResource(R.drawable.allscreen_btn); //videoLayout.setLayoutParams(new FrameLayout.LayoutParams(1000, 600)); isAllScreen = false; } else { screenImageView.setImageResource(R.drawable.cancelscreen_btn); window = dialog.getWindow(); //获得窗体的属性 WindowManager.LayoutParams lp = window.getAttributes(); lp.gravity = Gravity.CENTER; lp.width = ViewGroup.LayoutParams.MATCH_PARENT; lp.height = ViewGroup.LayoutParams.MATCH_PARENT; window.setAttributes(lp); //videoLayout.setLayoutParams(new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,FrameLayout.LayoutParams.MATCH_PARENT)); isAllScreen = true; } } }); }private void openPlayer(View view) { //创建播放器 player = ExoPlayerFactory.newSimpleInstance(view.getContext(), trackSelector); //创建加载数据的工厂 DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(view.getContext(), Util.getUserAgent(view.getContext(), "com.reactnativedemo"), (TransferListener< ? super DataSource> ) bandwidthMeter); //创建解析数据的工厂 ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory(); //传入Uri、加载数据的工厂、解析数据的工厂，就能创建出MediaSource String url = videoUrl; Uri mp4VideoUri = Uri.parse(url); MediaSource videoSource = new ExtractorMediaSource(mp4VideoUri, dataSourceFactory, extractorsFactory, null, null); //循环播放 LoopingMediaSource loopingMediaSource = new LoopingMediaSource(videoSource); player.prepare(loopingMediaSource); player.addListener(eventListener); player.setPlayWhenReady(true); }private ExoPlayer.EventListener eventListener = new ExoPlayer.EventListener() { @Override public void onTimelineChanged(Timeline timeline, Object o, int i) {}@Override public void onTracksChanged(TrackGroupArray trackGroupArray, TrackSelectionArray trackSelectionArray) {}@Override public void onLoadingChanged(boolean b) {}@Override public void onPlayerStateChanged(boolean b, int i) {}@Override public void onRepeatModeChanged(int i) {}@Override public void onShuffleModeEnabledChanged(boolean b) {}@Override public void onPlayerError(ExoPlaybackException e) { if (player != null) { player.stop(); player.release(); player = null; } FragmentTransaction ft = getFragmentManager().beginTransaction(); Fragment prev = getFragmentManager().findFragmentByTag("VideoDialogFragment"); if (prev != null) { ft.remove(prev); } }@Override public void onPositionDiscontinuity(int i) {}@Override public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {}@Override public void onSeekProcessed() { } }; private void startPlayer() { simpleExoPlayerView.setPlayer(player); //player.setPlayWhenReady(true); }@Override public void onAttach(Context context) { super.onAttach(context); }@Override public void onResume() { super.onResume(); if (player != null & & player.getCurrentPosition() > 0) { player.setPlayWhenReady(true); player.seekTo(resumePosition); } }@Override public void onPause() { super.onPause(); if (player != null & & player.getPlayWhenReady()) { resumeWindow = player.getCurrentWindowIndex(); resumePosition = Math.max(0, player.getContentPosition()); player.setPlayWhenReady(false); } }@Override public void onDestroyView() { super.onDestroyView(); //释放播放器 if (player != null) { player.stop(); player.release(); player = null; } }@Override public void onDestroy() { super.onDestroy(); silentSwitch(false); } }

开关静音：

public static void silentSwitch(boolean isOpenVoice) {
try {
AudioManager mAudioManager = (AudioManager) context.getSystemService(Service.AUDIO_SERVICE);
if (mAudioManager != null) {
if (isOpenVoice) {
mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 0, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
} else {
mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 100, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
}
}
} catch (Exception e) {

}
}
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