媒体项目和媒体源之间的不同？
MediaItem和MediaSource在Exoplayer中有什么不同，以及如何在最新版本的Exoplayer库（2.17.1）中使用MediaSource？
这是简单的项目如何使用MediaSource而不是MediaItem？
package com.agono.exoplayer;
import ...
public class MainActivity extends AppCompatActivity {
private Context ctx;
private StyledPlayerView playerView;
private Button button1;
private boolean isShowingTrackSelectionDialog;
private DefaultTrackSelector trackSelector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String videoUri=getIntent().getStringExtra("url");
trackSelector = new DefaultTrackSelector(/* context= */ this);
playerView = findViewById(R.id.test);
button1= findViewById(R.id.button1);
ExoPlayer player = new ExoPlayer.Builder(this)
.setTrackSelector(trackSelector)
.build();
MediaItem mediaItem = MediaItem.fromUri(videoUri);
// Attach player to the view.
playerView.setPlayer(player);
// Set the media item to be played.
player.setMediaItem(mediaItem);
// Prepare the player.
player.prepare();
}
}
Whats different between MediaItem and MediaSource in exoplayer and how i can use MediaSource in in the latest version of exoplayer library (2.17.1) ?
This is simple project how use MediaSource instead of MediaItem ?
package com.agono.exoplayer;
import ...
public class MainActivity extends AppCompatActivity {
private Context ctx;
private StyledPlayerView playerView;
private Button button1;
private boolean isShowingTrackSelectionDialog;
private DefaultTrackSelector trackSelector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String videoUri=getIntent().getStringExtra("url");
trackSelector = new DefaultTrackSelector(/* context= */ this);
playerView = findViewById(R.id.test);
button1= findViewById(R.id.button1);
ExoPlayer player = new ExoPlayer.Builder(this)
.setTrackSelector(trackSelector)
.build();
MediaItem mediaItem = MediaItem.fromUri(videoUri);
// Attach player to the view.
playerView.setPlayer(player);
// Set the media item to be played.
player.setMediaItem(mediaItem);
// Prepare the player.
player.prepare();
}
}
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埃法尔文档讨论了这一点：
（ https://exoplayer.dev/media-sources.html ）
和：
如果您只想播放媒体项目或创建播放列表，那么您可能只需要使用MediaItem-最新的Codelabs中有一些好的示例：<<< a href =“ https://developer.android.com/codelabs/exoplayer-intro#0” rel =“ nofollow noreferrer”> https：//develoveler.android.com/codelabs/codelabs/exoplayer-intro-intro-intro-intro-intro-intro-intro-intro-intro-intro-intro-intro#0
The ExoPlayer documentation discusses this:
(https://exoplayer.dev/media-sources.html)
and:
If all you want is to play a media item or create a playlist then you probably only need to use MediaItem - there are some good examples in the latest CodeLabs: https://developer.android.com/codelabs/exoplayer-intro#0