[CB-6144] Media Plugin throws Null Pointer Exception - Android 4.4.2

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.3.0
• Component/s: cordova-plugin-media

Environment

Android 4.4.2 - Nexus 7

• Assignee: Unassigned
• Reporter: Ashwin Desai
• Created: 01/Mar/14 12:07
• Updated: 04/Feb/16 07:20

Description

Here's my scenario

1) Start Recording using the Media plugin
theMedia = new Media(localFile, mediaSuccess, mediaError, mediaStatus);
theMedia.startRecord();
2) Continue for 1 minute
3) Stop recording and confirm that the file exists on the sdcard.
theMedia.stopRecord();
4) Play the file recorded in steps 1 - 3.

Stacktrace is attached to the issue.

theMedia.play();
5) The plugin throws a Null Pointer Exception at the line marked with //--> THROWS A NPE.
6) I have also shown a possible solution at the line marked with // POSSIBLE SOLUTION.

<code>
/**

• attempts to initialize the media player for playback
• @param file the file to play
• @return false if player not ready, reports if in wrong mode or state
  */
  private boolean readyPlayer(String file) {
  if (playMode()) {
  switch (this.state) {
  case MEDIA_NONE:
  if (this.player == null) { this.player = new MediaPlayer(); }

  try

  { this.loadAudioFile(file); }

  catch (Exception e)

  Unknown macro: { this.handler.webView.sendJavascript("cordova.require('org.apache.cordova.media.Media').onStatus('" + this.id + "', "+MEDIA_ERROR+", { \"code\":"+MEDIA_ERR_ABORTED+"});"); }

  return false;
  case MEDIA_LOADING:
  //cordova js is not aware of MEDIA_LOADING, so we send MEDIA_STARTING instead
  Log.d(LOG_TAG, "AudioPlayer Loading: startPlaying() called during media preparation: " + STATE.MEDIA_STARTING.ordinal());
  this.prepareOnly = false;
  return false;
  case MEDIA_STARTING:
  case MEDIA_RUNNING:
  case MEDIA_PAUSED:
  return true;
  case MEDIA_STOPPED:
  //if we are readying the same file
  if (this.audioFile.compareTo(file) == 0) {
  //reset the audio file

/*** POSSIBLE SOLUTION: TO FIX NPE */
if (player == null) {
player = new MediaPlayer();
try

{ this.loadAudioFile(file); }

catch (Exception e) {
this.handler.webView.sendJavascript("cordova.require('org.apache.cordova.media.Media').onStatus('" + this.id + "', "MEDIA_ERROR",

{ \"code\":"+MEDIA_ERR_ABORTED+"}

);");
}
}
player.seekTo(0); //---> THROWS NULL POINTER EXCEPTION
player.pause();
return true;
} else {
//reset the player
this.player.reset();
try

{ this.loadAudioFile(file); }

catch (Exception e) {
this.handler.webView.sendJavascript("cordova.require('org.apache.cordova.media.Media').onStatus('" + this.id + "', " + MEDIA_ERROR + ",

{ \"code\":" + MEDIA_ERR_ABORTED + "}

);");
}
//if we had to prepare= the file, we won't be in the correct state for playback
return false;
}
default:
Log.d(LOG_TAG, "AudioPlayer Error: startPlaying() called during invalid state: " + this.state);
this.handler.webView.sendJavascript("cordova.require('org.apache.cordova.media.Media').onStatus('" + this.id + "', " + MEDIA_ERROR + ",

{ \"code\":" + MEDIA_ERR_ABORTED + "}

);");
}
}
return false;
}
</code>