项目需要 写了个音乐播放器，要适配本地声音和网络获取的声音，而且切换评率非常高，而且老板总喜欢带蓝牙耳机，所以输出音频要根据设备关联 我这边给大家提供一个简单的工具
public class BgmPlayer {
private final MediaPlayer mMediaPlayer;
private AudioManager mAudioManager;
private final BluetoothAdapter ba;
private boolean mPlay;
private boolean mPause;
private boolean LooPing = true;
private Context context;
private final mFocusChangeListener;
public BgmPlayer(Context context) {
= context;
mMediaPlayer = new MediaPlayer();
mAudioManager = (AudioManager) (Context.AUDIO_SERVICE);
// if (()) {
// changeToHeadset();
//
// } else {
// changeToSpeaker();
//
// }
ba = ();
if (ba == null) {
// isBlueCon = -1; //error
//return -1;
} else if (()) {
int a2dp = (BluetoothProfile.A2DP); //可操控蓝牙设备，如带播放暂停功能的蓝牙耳机
int headset = (); //蓝牙头戴式耳机，支持语音输入输出
int health = (); //蓝牙穿戴式设备
//查看是否蓝牙是否连接到三种设备的一种，以此来判断是否处于连接状态还是打开并没有连接的状态
int flag = -1;
if (a2dp == BluetoothProfile.STATE_CONNECTED) {
flag = a2dp;
} else if (headset == BluetoothProfile.STATE_CONNECTED) {
flag = headset;
} else if (health == BluetoothProfile.STATE_CONNECTED) {
flag = health;
}
//说明连接上了三种设备的一种
if (flag != -1) {
// isBlueCon = 1; //connected
// return 2;
changeToSpeaker();//蓝牙
}
}
mFocusChangeListener = new () {
@Override
public void onAudioFocusChange(int focusChange) {
if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) {
pause();
}
}
};
}
/**
* 切换到外放 连接设备
*/
public void changeToSpeaker() {
("tag", "切换到外放");
(AudioManager.MODE_NORMAL);
(true);
}
/**
* 切换到耳机模式
*/
public void changeToHeadset() {
("tag", "切换到内放");
(false);
}
/**
* 切换到听筒 手机自带喇叭
*/
public void changeToReceiver() {
(false);
if (.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
(AudioManager.MODE_IN_COMMUNICATION);
} else {
(AudioManager.MODE_IN_CALL);
}
}
public boolean isPlay() {
return mPlay;
}
public boolean isPause() {
return mPause;
}
public void play(String url) {
LooPing = true;
mPlay = false;
("播放=" + url);
if ((url)) {
return;
}
initPlayerAndPlay(url);
}
public void plays(String url, boolean LooPing) {
= LooPing;
mPlay = false;
("播放=" + url);
if ((url)) {
return;
}
mAudioManager = (AudioManager) (Context.AUDIO_SERVICE);
changeToSpeaker();
initPlayerAndPlay(url);
}
private void initPlayerAndPlay(String url) {
mPause = false;
String md5 = Md5Util.md5(url);
File dstFile = getDstFile(md5);
if (()) {
playLocal(dstFile);
} else {
downLoad(url, md5, dstFile);
playNet(url);
}
}
private void playLocal(File dstFile) {
try {
("TAG", "开始");
(LooPing);//是否循环播放
(());//通过一个具体的路径来设置MediaPlayer的数据源，path可以是本地的一个路径，也可以是一个网络路径
(AudioManager.STREAM_MUSIC);
(); //准备播放
();//开始播放
mPlay = true;
requestPermanentAudioFocus(true, mFocusChangeListener);
} catch (IOException e) {
();
();
requestPermanentAudioFocus(false, mFocusChangeListener);
}
}
private void playNet(String url) {
try {
(LooPing);
(url);
(AudioManager.STREAM_MUSIC);//手机音乐的声音
(); //异步准备播放
(new () {
@Override
public void onPrepared(MediaPlayer mp) {
();//开始播放
mPlay = true;
requestPermanentAudioFocus(true, mFocusChangeListener);
}
});
} catch (IOException e) {
();
();
requestPermanentAudioFocus(false, mFocusChangeListener);
}
}
public void resume() {
if (mPlay && mPause) {
();
mPause = false;
requestPermanentAudioFocus(true, mFocusChangeListener);
}
}
public void pause() {
if (mPlay) {
();
mPause = true;
requestPermanentAudioFocus(false, mFocusChangeListener);
}
}
public void stop() {
mPlay = false;
();
();
();
requestPermanentAudioFocus(false, mFocusChangeListener);
}
public void release() {
("TAG", "退出房间，音频关闭");
mPlay = false;
();
();
requestPermanentAudioFocus(false, mFocusChangeListener);
}
private File getDstFile(String mds) {
File dstDir = ("bgms");
File dstFile = new File(dstDir, mds + ".bgm");
return dstFile;
}
private void downLoad(String url, String md5, final File dstFile) {
File tempDir = ("tmp_bgms");
String tempName = md5 + ".tmp";
File tempFile = new File(tempDir, tempName);
();
OkGo.<File>get(url).execute(new FileCallback((), tempName) {
@Override
public void onSuccess(Response<File> response) {
("下载完毕");
File body = ();
(dstFile);
}
});
}
/**
* 获取永久的音频焦点
*
* @param request
* @return
*/
public boolean requestPermanentAudioFocus(boolean request,
listener) {
if (request) {
int result = (listener, AudioManager.STREAM_MUSIC,
AudioManager.AUDIOFOCUS_GAIN);
return result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
} else {
int result = (listener);
return result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
}
}
/**
* 获取短暂的音频焦点
*
* @param request
* @return
*/
public boolean requestTransientAudioFocus(boolean request,
listener) {
if (request) {
int result = (listener, AudioManager.STREAM_MUSIC,
AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
return result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
} else {
int result = (listener);
return result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
}
}
}
注册代码
mBgmPlayer = new BgmPlayer(());
使用的时候直接
if (!()) {
(url);//循环播放
}
();暂停
();销毁
(url,false);不循环播放