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    <p>Problem? You must specify audioStreamType before .prepare()! So this is working.</p> <pre><code>MediaPlayer player = new MediaPlayer(); AssetFileDescriptor afd = this.getResources().openRawResourceFd(R.raw.alarm); player.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); afd.close(); player.setAudioStreamType(AudioManager.STREAM_ALARM); player.setLooping(true); player.prepare(); player.start(); </code></pre> <p>But if you remove</p> <blockquote> <p>player.setAudioStreamType(AudioManager.STREAM_ALARM);</p> </blockquote> <p>it won't work. If you use <strong>MediaPlayer.create(context, resid)</strong> - the static method itself will make prepare before you use</p> <blockquote> <p>player.setAudioStreamType(AudioManager.STREAM_ALARM);</p> </blockquote> <p>because body of the method is (see <strong>mp.prepare()</strong> before return statement)</p> <pre><code>public static MediaPlayer create(Context context, int resid) { try { AssetFileDescriptor afd = context.getResources().openRawResourceFd(resid); if (afd == null) return null; MediaPlayer mp = new MediaPlayer(); mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); afd.close(); mp.prepare(); return mp; } catch (IOException ex) { Log.d(TAG, "create failed:", ex); // fall through } catch (IllegalArgumentException ex) { Log.d(TAG, "create failed:", ex); // fall through } catch (SecurityException ex) { Log.d(TAG, "create failed:", ex); // fall through } return null; } </code></pre> <p>So use the snippet at the beginning or use own static method</p> <pre><code>public static MediaPlayer create(Context context, int resid, boolean looping) { try { AssetFileDescriptor afd = context.getResources().openRawResourceFd(resid); MediaPlayer mp = new MediaPlayer(); mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); afd.close(); mp.setAudioStreamType(AudioManager.STREAM_ALARM); if (looping) mp.setLooping(true); mp.prepare(); return mp; } catch (IOException ex) { Log.d("MediaPlayer", "create failed:", ex); // fall through } catch (IllegalArgumentException ex) { Log.d("MediaPlayer", "create failed:", ex); // fall through } catch (SecurityException ex) { Log.d("MediaPlayer", "create failed:", ex); // fall through } return null; } </code></pre> <p>and use it in your activity as (third argument is to loop the sound or not)</p> <pre><code>MediaPlayer player = MainActivity.create(this, R.raw.alarm, true); player.start(); </code></pre>
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