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MediaAdapter.java

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package adapterPattern;

// 创建实现了MediaPlayer接口的适配器类

public class MediaAdapter implements MediaPlayer {

AdvancedMediaPlayer advancedMusicPlayer;

public MediaAdapter(String audioType) {

if(audioType.equalsIgnoreCase("vlc")) {

advancedMusicPlayer=new VlcPlayer();

}else if(audioType.equalsIgnoreCase("mp4")) {

advancedMusicPlayer=new Mp4Player();

}

}

@Override

public void play(String audioType, String fileName) {

if(audioType.equalsIgnoreCase("vlc")) {

advancedMusicPlayer.playVlc(fileName);

}else if(audioType.equalsIgnoreCase("mp4")) {

advancedMusicPlayer.playMp4(fileName);

}

}

}