据我所知，我的代码中的Uri.parse导致我的MediaPlayer无法处理文件名中带有特殊字符（例如“＃”等）的音频文件。我不知道如何解决此问题。我希望能够在文件名中使用特殊字符。这是我认为导致问题的代码：
public void playAudio(int media) {
try {
switch (media) {
case LOCAL_AUDIO:
/**
* TODO: Set the path variable to a local audio file path.
*/
if (path == "") {
// Tell the user to provide an audio file URL.
Toast
.makeText(
MediaPlayerDemo_Audio.mp,
"Please edit MediaPlayer_Audio Activity, "
+ "and set the path variable to your audio file path."
+ " Your audio file must be stored on sdcard.",
Toast.LENGTH_LONG).show();
}
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setLooping(sound_loop);
mMediaPlayer.setDataSource(MediaPlayerDemo_Audio.mp, Uri.parse(path));
mMediaPlayer.prepare();
resetTimer();
startTimer();
mMediaPlayer.start();
Intent intent = new Intent(MediaPlayerDemo_Audio.PLAY_START);
sendBroadcast(intent);
break;
case RESOURCES_AUDIO:
/**
* TODO: Upload a audio file to res/raw folder and provide
* its resid in MediaPlayer.create() method.
*/
// mMediaPlayer = MediaPlayer.create(this, R.raw.test_cbr);
//mMediaPlayer.start();
}
//tx.setText(path);
} catch (Exception e) {
//Log.e(TAG, "error: " + e.getMessage(), e);
}
}
我正在使用MediaPlayerDemo_Audio.java播放声音。从上面的代码中可以看到，mMediaPlayer.setDataSource（MediaPlayerDemo_Audio.mp，Uri.parse（path））; 我认为正在调用代码来检索文件和媒体播放器。我还不太熟练使用android代码。这是MediaPlayerDemo_Audio.java的代码：
public class MediaPlayerDemo_Audio extends Activity {
public static String path;
private String fname;
private static Intent PlayerIntent;
public static String STOPED = "stoped";
public static String PLAY_START = "play_start";
public static String PAUSED = "paused";
public static String UPDATE_SEEKBAR = "update_seekbar";
public static boolean is_loop = false;
private static final int LOCAL_AUDIO=0;
private Button play_pause, stop;
private SeekBar seek_bar;
public static MediaPlayerDemo_Audio mp;
private AudioPlayerService mPlayerService;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.media_player_layout);
//getWindow().setTitle("SoundPlayer");
//getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,
// android.R.drawable.ic_media_play);
play_pause = (Button)findViewById(R.id.play_pause);
play_pause.setOnClickListener(play_pause_clk);
stop = (Button)findViewById(R.id.stop);
stop.setOnClickListener(stop_clk);
seek_bar = (SeekBar)findViewById(R.id.seekBar1);
seek_bar.setMax(100);
seek_bar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
public void onStopTrackingTouch(SeekBar seekBar) {
if (mPlayerService!=null) {
int seek_pos = (int) ((double)mPlayerService.getduration()*seekBar.getProgress()/100);
mPlayerService.seek(seek_pos);
}
}
public void onStartTrackingTouch(SeekBar seekBar) {
}
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
}
});
play_pause.setText("Pause");
stop.setText("Stop");
//int idx = path.lastIndexOf("/");
//fname = path.substring(idx+1);
//tx.setText(path);
IntentFilter filter = new IntentFilter();
filter.addAction(STOPED);
filter.addAction(PAUSED);
filter.addAction(PLAY_START);
filter.addAction(UPDATE_SEEKBAR);
registerReceiver(mPlayerReceiver, filter);
PlayerIntent = new Intent(MediaPlayerDemo_Audio.this, AudioPlayerService.class);
if (AudioPlayerService.path=="") AudioPlayerService.path=path;
AudioPlayerService.sound_loop = is_loop;
startService(PlayerIntent);
bindService(PlayerIntent, mConnection, 0);
if (mPlayerService!=null && mPlayerService.is_pause==true) play_pause.setText("Play");
mp = MediaPlayerDemo_Audio.this;
}
private BroadcastReceiver mPlayerReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String act = intent.getAction();
if (act.equalsIgnoreCase(UPDATE_SEEKBAR)){
int val = intent.getIntExtra("seek_pos", 0);
seek_bar.setProgress(val);
TextView counter = (TextView) findViewById(R.id.time_view);
counter.setText(DateUtils.formatElapsedTime((long) (intent.getLongExtra("time", 0)/16.666)));
//tx.setText(fname);
}
else if (act.equalsIgnoreCase(STOPED)) {
play_pause.setText("Play");
seek_bar.setProgress(0);
stopService(PlayerIntent);
unbindService(mConnection);
mPlayerService = null;
TextView counter = (TextView) findViewById(R.id.time_view);
counter.setText(DateUtils.formatElapsedTime(0));
}
else if (act.equalsIgnoreCase(PLAY_START)){
play_pause.setText("Pause");
}
else if (act.equalsIgnoreCase(PAUSED)){
play_pause.setText("Play");
}
}
};
private ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName arg0, IBinder arg1) {
mPlayerService = ((AudioPlayerService.LocalBinder)arg1).getService();
if (mPlayerService.is_pause==true) {
play_pause.setText("Play");
seek_bar.setProgress(mPlayerService.seek_pos);
}
if (mPlayerService.mTime!=0) {
TextView counter = (TextView) findViewById(R.id.time_view);
counter.setText(DateUtils.formatElapsedTime((long) (mPlayerService.mTime/16.666)));
}
if (path.equalsIgnoreCase(AudioPlayerService.path)==false){
AudioPlayerService.path = path;
mPlayerService.restart();
}
}
@Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
mPlayerService = null;
}
};
private OnClickListener play_pause_clk = new OnClickListener() {
@Override
public void onClick(View arg0) {
if (mPlayerService!=null)
mPlayerService.play_pause();
else{
AudioPlayerService.path=path;
startService(PlayerIntent);
bindService(PlayerIntent, mConnection, 0);
}
}
};
private OnClickListener stop_clk = new OnClickListener() {
@Override
public void onClick(View arg0) {
if (mPlayerService==null) return;
mPlayerService.Stop();
}
};
@Override
protected void onDestroy() {
super.onDestroy();
// TODO Auto-generated method stub
}
}
如何解决此问题，以便可以使用特殊字符解析文件并在MediaPlayer中正确播放文件？我想念什么吗？
也许有助于显示我的AudioPlayerService的完整代码：
public class AudioPlayerService extends Service {
public MediaPlayer mMediaPlayer;
protected long mStart;
public long mTime;
public int seek_pos=0;
public static boolean sound_loop = false;
public boolean is_play, is_pause;
public static String path="";
private static final int LOCAL_AUDIO=0;
private static final int RESOURCES_AUDIO=1;
private int not_icon;
private Notification notification;
private NotificationManager nm;
private PendingIntent pendingIntent;
private Intent intent;
@SuppressWarnings("deprecation")
@Override
public void onCreate() {
playAudio(LOCAL_AUDIO);
mTime=0;
is_play = true;
is_pause = false;
CharSequence ticker = "Touch to return to app";
long now = System.currentTimeMillis();
not_icon = R.drawable.play_notification;
notification = new Notification(not_icon, ticker, now);
nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Context context = getApplicationContext();
intent = new Intent(this, MediaPlayerDemo_Audio.class);
pendingIntent = PendingIntent.getActivity(context, 0,intent, 0);
PhoneStateListener phoneStateListener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
if (state == TelephonyManager.CALL_STATE_RINGING) {
//INCOMING call
//do all necessary action to pause the audio
if (is_play==true && is_pause==false){
play_pause();
}
} else if(state == TelephonyManager.CALL_STATE_IDLE) {
//Not IN CALL
//do anything if the phone-state is idle
} else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
//A call is dialing, active or on hold
//do all necessary action to pause the audio
//do something here
if (is_play==true && is_pause==false){
play_pause();
}
}
super.onCallStateChanged(state, incomingNumber);
}
};//end PhoneStateListener
TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
if(mgr != null) {
mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
}
OnAudioFocusChangeListener myaudiochangelistener = new OnAudioFocusChangeListener(){
@Override
public void onAudioFocusChange(int arg0) {
//if (arg0 ==AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK){
if (is_play==true && is_pause==false){
play_pause();
}
//}
}
};
AudioManager amr = (AudioManager)getSystemService(AUDIO_SERVICE);
amr.requestAudioFocus(myaudiochangelistener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
}
@SuppressWarnings("deprecation")
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Context context = getApplicationContext();
String title = "VoiceRecorder App";
CharSequence message = "Playing..";
notification.setLatestEventInfo(context, title, message,pendingIntent);
nm.notify(101, notification);
return START_STICKY;
}
public class LocalBinder extends Binder {
AudioPlayerService getService() {
return AudioPlayerService.this;
}
}
public void restart(){
mMediaPlayer.stop();
playAudio(LOCAL_AUDIO);
mTime=0;
is_play = true;
is_pause = false;
}
@Override
public IBinder onBind(Intent arg0) {
return mBinder;
}
private final IBinder mBinder = new LocalBinder();
public void Stop()
{
mMediaPlayer.stop();
Intent intent1 = new Intent(MediaPlayerDemo_Audio.STOPED);
sendBroadcast(intent1);
resetTimer();
is_play=false;
is_pause=false;
}
public void play_pause()
{
if (is_play==false){
try {
mMediaPlayer.start();
startTimer();
is_play=true;
is_pause = false;
} catch (Exception e) {
//Log.e(TAG, "error: " + e.getMessage(), e);
}
Intent intent = new Intent(MediaPlayerDemo_Audio.PLAY_START);
sendBroadcast(intent);
}
else{
mMediaPlayer.pause();
stopTimer();
Intent intent1 = new Intent(MediaPlayerDemo_Audio.PAUSED);
sendBroadcast(intent1);
is_play = false;
is_pause = true;
}
}
public int getduration()
{
return mMediaPlayer.getDuration();
}
public void seek(int seek_pos)
{
mMediaPlayer.seekTo(seek_pos);
mTime = seek_pos;
}
public void playAudio(int media) {
try {
switch (media) {
case LOCAL_AUDIO:
/**
* TODO: Set the path variable to a local audio file path.
*/
if (path == "") {
// Tell the user to provide an audio file URL.
Toast
.makeText(
MediaPlayerDemo_Audio.mp,
"Please edit MediaPlayer_Audio Activity, "
+ "and set the path variable to your audio file path."
+ " Your audio file must be stored on sdcard.",
Toast.LENGTH_LONG).show();
}
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setLooping(sound_loop);
mMediaPlayer.setDataSource(MediaPlayerDemo_Audio.mp, Uri.parse(path));
mMediaPlayer.prepare();
resetTimer();
startTimer();
mMediaPlayer.start();
Intent intent = new Intent(MediaPlayerDemo_Audio.PLAY_START);
sendBroadcast(intent);
break;
case RESOURCES_AUDIO:
/**
* TODO: Upload a audio file to res/raw folder and provide
* its resid in MediaPlayer.create() method.
*/
// mMediaPlayer = MediaPlayer.create(this, R.raw.test_cbr);
//mMediaPlayer.start();
}
//tx.setText(path);
} catch (Exception e) {
//Log.e(TAG, "error: " + e.getMessage(), e);
}
}
@SuppressLint("HandlerLeak")
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
long curTime = System.currentTimeMillis();
mTime += curTime-mStart;
mStart = curTime;
int pos = (int) ((double)mMediaPlayer.getCurrentPosition()*100/mMediaPlayer.getDuration());
seek_pos = pos;
Intent intent1 = new Intent(MediaPlayerDemo_Audio.UPDATE_SEEKBAR);
if (mMediaPlayer.isLooping()) intent1.putExtra("time", (long)mMediaPlayer.getCurrentPosition());
else intent1.putExtra("time", mTime);
intent1.putExtra("seek_pos", pos);
sendBroadcast(intent1);
if (mMediaPlayer.isPlaying()==false && mMediaPlayer.isLooping()==false){
mMediaPlayer.stop();
resetTimer();
Intent intent2 = new Intent(MediaPlayerDemo_Audio.STOPED);
sendBroadcast(intent2);
is_play=false;
}
if (mTime > 0) mHandler.sendEmptyMessageDelayed(0, 10);
};
};
private void startTimer() {
mStart = System.currentTimeMillis();
mHandler.removeMessages(0);
mHandler.sendEmptyMessage(0);
}
private void stopTimer() {
mHandler.removeMessages(0);
}
private void resetTimer() {
stopTimer();
mTime = 0;
}
@Override
public void onDestroy() {
super.onDestroy();
// TODO Auto-generated method stub
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
nm.cancel(101);
}
}
对于本地文件，请勿使用Uri.parse()。使用Uri.fromFile()，传入File指向相关文件的对象。这样可以正确地转义特殊字符，例如#。
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