Android应用开发--MP3音乐播放器代码实现（二，android开发实例大全

本文链接：https://blog.youkuaiyun.com/flunsna/article/details/122215473

本文详细介绍了如何在Android应用中实现一个MP3音乐播放器，包括播放、暂停、下一首、上一首、单曲循环、全部循环、无重复播放等功能。代码涉及点击事件处理、广播接收器用于接收服务中的状态更新，以及自定义对话框的实现。

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}

switch (repeatState) {

case isCurrentRepeat: // 单曲循环

repeatBtn

.setBackgroundResource(R.drawable.repeat_current_selector);

Toast.makeText(HomeActivity.this, R.string.repeat_current,

Toast.LENGTH_SHORT).show();

break;

case isAllRepeat: // 全部循环

repeatBtn

.setBackgroundResource(R.drawable.repeat_all_selector);

Toast.makeText(HomeActivity.this, R.string.repeat_all,

Toast.LENGTH_SHORT).show();

break;

case isNoneRepeat: // 无重复

repeatBtn

.setBackgroundResource(R.drawable.repeat_none_selector);

Toast.makeText(HomeActivity.this, R.string.repeat_none,

Toast.LENGTH_SHORT).show();

break;

}

break;

case R.id.play_music: // 播放音乐

if(isFirstTime) {

play();

isFirstTime = false;

isPlaying = true;

isPause = false;

} else {

if (isPlaying) {

playBtn.setBackgroundResource(R.drawable.pause_selector);

intent.setAction(“com.wwj.media.MUSIC_SERVICE”);

intent.putExtra(“MSG”, AppConstant.PlayerMsg.PAUSE_MSG);

startService(intent);

isPlaying = false;

isPause = true;

} else if (isPause) {

playBtn.setBackgroundResource(R.drawable.play_selector);

intent.setAction(“com.wwj.media.MUSIC_SERVICE”);

intent.putExtra(“MSG”, AppConstant.PlayerMsg.CONTINUE_MSG);

startService(intent);

isPause = false;

isPlaying = true;

}

break;

case R.id.shuffle_music: // 随机播放

if (isNoneShuffle) {

shuffleBtn

.setBackgroundResource(R.drawable.shuffle_selector);

Toast.makeText(HomeActivity.this, R.string.shuffle,

Toast.LENGTH_SHORT).show();

isNoneShuffle = false;

isShuffle = true;

shuffleMusic();

repeatBtn.setClickable(false);

} else if (isShuffle) {

shuffleBtn

.setBackgroundResource(R.drawable.shuffle_none_selector);

Toast.makeText(HomeActivity.this, R.string.shuffle_none,

Toast.LENGTH_SHORT).show();

isShuffle = false;

isNoneShuffle = true;

repeatBtn.setClickable(true);

}

break;

case R.id.next_music: // 下一首

playBtn.setBackgroundResource(R.drawable.play_selector);

isFirstTime = false;

isPlaying = true;

isPause = false;

next();

break;

case R.id.playing: //正在播放

Mp3Info mp3Info = mp3Infos.get(listPosition);

Intent intent = new Intent(HomeActivity.this, PlayerActivity.class);

intent.putExtra(“title”, mp3Info.getTitle());

intent.putExtra(“url”, mp3Info.getUrl());

intent.putExtra(“artist”, mp3Info.getArtist());

intent.putExtra(“listPosition”, listPosition);

intent.putExtra(“currentTime”, currentTime);

intent.putExtra(“duration”, duration);

intent.putExtra(“MSG”, AppConstant.PlayerMsg.PLAYING_MSG);

startActivity(intent);

break;

}

private class MusicListItemClickListener implements OnItemClickListener {

/**

点击列表播放音乐

@Override

public void onItemClick(AdapterView<?> parent, View view, int position,

long id) {

listPosition = position;

playMusic(listPosition);

}

public class MusicListItemContextMenuListener implements OnCreateContextMenuListener {

@Override

public void onCreateContextMenu(ContextMenu menu, View v,

ContextMenuInfo menuInfo) {

Vibrator vibrator = (Vibrator) getSystemService(Service.VIBRATOR_SERVICE);

vibrator.vibrate(50); //长按振动

musicListItemDialog(); //长按后弹出的对话框

}