简单音频扫码提示

来源：互联网发布：酷狗音乐mac版下载编辑：程序博客网时间：2024/05/09 05:16

进行二维码扫描时，往往需要根据扫描到内容给出相应的音频提示，或正确或不正确。

RawPlayer.java:

/** * Created by Sinaan on 2016/12/22. * <uses-permission android:name="android.permission.VIBRATE" /> */public class RawPlayer {    private Activity context;    private MediaPlayer mediaPlayer;    private Vibrator vibrator;    private static final float BEEP_VOLUME = 0.10f;    private static final long VIBRATE_DURATION = 200L;    public enum Scan{        CORRECT,ERROR    }    public RawPlayer(Activity context) {        this.context = context;        if (mediaPlayer == null) {            vibrator = SystemService.getVibrator(context);            initBeepSound();        }    }    private void initBeepSound() {        context.setVolumeControlStream(AudioManager.STREAM_MUSIC);        mediaPlayer = new MediaPlayer();        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);        mediaPlayer.setOnCompletionListener(beepListener);    }    public void play(Scan scan) {        if (mediaPlayer != null) {            AssetFileDescriptor file ;            mediaPlayer.reset();            if(Scan.CORRECT==scan)                file = context.getResources().openRawResourceFd(R.raw.correct);            else                file = context.getResources().openRawResourceFd(R.raw.error);            try {                mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength());                file.close();                mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);                mediaPlayer.prepare();                mediaPlayer.start();                vibrator.vibrate(VIBRATE_DURATION);            } catch (IOException e) {                mediaPlayer = null;            }        }    }    /**     * When the beep has finished playing, rewind to queue up another one.     */    private final MediaPlayer.OnCompletionListener beepListener = new MediaPlayer.OnCompletionListener() {        public void onCompletion(MediaPlayer mediaPlayer) {            mediaPlayer.seekTo(0);        }    };}

调用方法：

MediaPlayer mediaPlayer = new MediaPlayer();rawPlayer.play(RawPlayer.Scan.CORRECT);、rawPlayer.play(RawPlayer.Scan.ERROR);

0 0