android exoplayer的使用

一.背景

    最近公司让研究一个exoplayer播放器，所以在网上找了些资料，记录一下。英语不错的同学可以直接看文档(点击打开链接)    另外附上官方的github地址(https://github.com/google/ExoPlayer)

二.步骤

1. 添加exoplayer的依赖
2. 创建simpleExoplayer实例
3. 将播放器和SimpleExoplayerView结合
4. 用MediaSource准备播放
5. 结束播放释放资源

三.具体代码

public class MainActivity extends AppCompatActivity {    private Context mContext;    private SimpleExoPlayerView simpleExoPlayerView;        private SimpleExoPlayer simpleExoPlayer;    private DataSource.Factory dataSourceFactory;    private EventLogger eventLogger;    private Handler mainHandler = new Handler();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mContext = this;        simpleExoPlayerView = (SimpleExoPlayerView) findViewById(R.id.player_view);        init();    }    private void init() {        // 1 create a default TrackSelector        BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();        TrackSelection.Factory videoTrackSelectionFactory =                new AdaptiveTrackSelection.Factory(bandwidthMeter);        DefaultTrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);        // 打印日志        eventLogger = new EventLogger(trackSelector);        // 2. Create the player        simpleExoPlayer = ExoPlayerFactory.newSimpleInstance(mContext, trackSelector);        // bind the player to the view        simpleExoPlayerView.setPlayer(simpleExoPlayer);        // 默认带宽测量        DefaultBandwidthMeter defaultBandwidthMeter =                new DefaultBandwidthMeter();        dataSourceFactory =                new DefaultDataSourceFactory(mContext,                        Util.getUserAgent(mContext, "ExoPlayerDemo"), defaultBandwidthMeter);        Uri uri = Uri.parse("http://devimages.apple.com/samplecode/adDemo/ad.m3u8");        MediaSource mediaSource = new HlsMediaSource(uri, dataSourceFactory, mainHandler, eventLogger);        // 准备播放        simpleExoPlayer.prepare(mediaSource);        // 自动播放        simpleExoPlayer.setPlayWhenReady(true);    }    @Override    protected void onDestroy() {        super.onDestroy();        if (simpleExoPlayer != null) {            simpleExoPlayer.release();        }    }}

布局文件

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.wxj.exoplayer.MainActivity" >    <com.google.android.exoplayer2.ui.SimpleExoPlayerView        android:id="@+id/player_view"        android:layout_width="match_parent"        android:layout_height="match_parent" /></RelativeLayout>

依赖文件，我这里依赖的全部的，其实你可以选择一两个就行

    compile 'com.google.android.exoplayer:exoplayer-core:r2.5.1'    compile 'com.google.android.exoplayer:exoplayer-dash:r2.5.1'    compile 'com.google.android.exoplayer:exoplayer-ui:r2.5.1'    compile 'com.google.android.exoplayer:exoplayer-hls:r2.5.1'    compile 'com.google.android.exoplayer:exoplayer-smoothstreaming:r2.5.1'

最后不要忘记加网络的权限