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我有List<MediaPlayer>那个由

private List<MediaPlayer> players() {

    for (String file : path.list((dir1, name) -> {
        if (name.endsWith(SUPPORTED_VIDEO_FILE_EXTENSIONS)){
            return true;
        }
        return false;
    })) {
        players.add(createPlayer(Paths.get(path + "/" + file).toUri().toString()));
        System.out.println(Paths.get(path + "/" + file).toUri().toString());
    }
    return players;
}

在我的情况下，大小List<MediaPlayer>是 3。比我在那里使用它

if (currentNumOfVideo == -1) {
    currentNumOfVideo = 0;
}
mv = new MediaView();
MediaPlayer currentPlayer = players.get(currentNumOfVideo);
mv.setMediaPlayer(currentPlayer);
currentPlayer.play();

players.get(currentNumOfVideo).setOnEndOfMedia(() -> {
    players.get(currentNumOfVideo).stop();
    if (currentNumOfVideo < players.size()) {
        currentNumOfVideo += 1;
        mv.setMediaPlayer(players.get(currentNumOfVideo));
        players.get(currentNumOfVideo).play();
    } else {
        currentNumOfVideo = 0;
        mv.setMediaPlayer(players.get(currentNumOfVideo));
        players.get(currentNumOfVideo).play();
    }
});

第一个视频播放，当它结束时第二个视频开始。在第二个视频之后 MediaPlayer 停止并且没有播放第三个视频。

我知道因为我的setOnEndOfMedia那只是在第一个 MediaPlayer 上。当第二个视频开始时它没有setOnEndOfMedia. 我怎样才能setOnEndOfMedia在我的List<MediaPlayer>.

4

1 回答 1

1

就个人而言，我不会MediaPlayer提前创建所有实例。相反，获取Media对象列表或至少是指向媒体的 URI。然后创建一个方法，该方法负责在当前视频结束时播放下一个视频。该方法将处理 old MediaPlayer，创建 next MediaPlayer，并将其配置为在完成时调用相同的方法。例如：

import java.util.List;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;

public class Main extends Application {

  private MediaView mediaView;

  private List<Media> media;
  private int curIndex;

  @Override
  public void start(Stage primaryStage) throws Exception {
    media = ...; // get media from somewhere

    mediaView = new MediaView();
    primaryStage.setScene(new Scene(new StackPane(mediaView), 720, 480));
    primaryStage.show();

    playNextVideo();
  }

  private void playNextVideo() {
    disposePlayer();
    if (curIndex == media.size()) {
      return; // no more videos to play
    }

    MediaPlayer player = new MediaPlayer(media.get(curIndex++));
    player.setAutoPlay(true); // play ASAP
    player.setOnEndOfMedia(this::playNextVideo); // play next video when this one ends
    mediaView.setMediaPlayer(player);
  }

  private void disposePlayer() {
    MediaPlayer player = mediaView.getMediaPlayer();
    if (player != null) {
      player.dispose(); // release resources
    }
  }
}

这可能会导致视频之间出现暂停。如果这不可接受，您可以提前创建下一个 ，与当前播放器同时或当前播放器达到某个时间戳时（例如结束前 10 秒）。但我仍然不会提前创建所有实例。MediaPlayerMediaPlayerMediaPlayer

于 2020-04-18T23:15:00.997 回答