java - 如何在 Android 中的闹钟应用程序中设置闹钟铃声

Question

我正在制作一个警报应用程序，但我陷入了警报音阶段。我目前正在尝试使用 RingtoneManager 设置闹钟铃声，但它根本不起作用。此外，我有一个搜索栏应该播放用户选择的警报音，但它没有。当我设置闹钟铃声时，我不希望它成为默认铃声，而只是该闹钟的铃声，因为用户可以选择创建多个闹钟。

这是搜索栏代码:

volumeBar = (SeekBar) findViewById(R.id.seekBarVolume);
        audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        mMediaPlayer = new MediaPlayer();

        volumeBar.setMax(audioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM));
        volumeBar.setKeyProgressIncrement(1);
        volumeBar.setProgress(audioManager.getStreamVolume(AudioManager.STREAM_ALARM));

        volumeBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub
                try {
                    Uri alert = RingtoneManager
                            .getDefaultUri(RingtoneManager.TYPE_ALARM);

                    mMediaPlayer.setDataSource(getApplicationContext(), alert);
                    if (audioManager.getStreamVolume(AudioManager.STREAM_ALARM) != 0 && !mMediaPlayer.isPlaying()) {
                        mMediaPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
                        mMediaPlayer.setLooping(true);
                        mMediaPlayer.prepare();
                        mMediaPlayer.start();
                    }
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // TODO Auto-generated method stub
                audioManager.setStreamVolume(AudioManager.STREAM_ALARM, progress, AudioManager.FLAG_SHOW_UI);
            }
        });

这是铃声选择器的 Intent :

case R.id.buttonAlarmTones:
                try {
                    mMediaPlayer.release();
                    mMediaPlayer.stop();
                } catch (Exception e) {
                    // TODO: handle exception
                }
                Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
                intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_ALL);
                intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "Select Tone");
                intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, RingtoneManager.getActualDefaultRingtoneUri(getApplicationContext(), RingtoneManager.TYPE_ALARM));
                startActivityForResult(intent, 5);
                break;

最后，这是 onActivityResult():

@Override
    protected void onActivityResult(int arg0, int arg1, Intent arg2) {
        // TODO Auto-generated method stub
        super.onActivityResult(arg0, arg1, arg2);
        if (arg1 == RESULT_OK && arg0 == 5) {
            Uri uri = arg2.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
            Ringtone ringtone = RingtoneManager.getRingtone(getApplicationContext(), uri);

            Uri uri2 = Uri.parse(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM).toString());
            Ringtone ringtone2 = RingtoneManager.getRingtone(getApplicationContext(), uri2);

            if (uri != null) {
                selectedAlarmTone.setText(ringtone.getTitle(getApplicationContext()));
                RingtoneManager.setActualDefaultRingtoneUri(getApplicationContext(), RingtoneManager.TYPE_ALARM, uri);
            } else {
                selectedAlarmTone.setText(ringtone2.getTitle(getApplicationContext()));
                RingtoneManager.setActualDefaultRingtoneUri(getApplicationContext(), RingtoneManager.TYPE_ALARM, uri2);
            }
        }
    }

任何帮助将不胜感激。谢谢。

Answer 1

这是使用 RingtoneManager 的示例

    Uri uri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
    Ringtone ringtone = RingtoneManager.getRingtone(context, uri);
    ringtone.play();

您不需要 MediaPlayer。