can not play mp3 file from raw folder in android

Question

I created raw folder inside res directory and inserted mp3 file.I try to play my mp3 file with mediaplayer. this is a my source -

 MediaPlayer mediaPlayer=MediaPlayer.create(MainActivity.this,R.raw.music_1);
 mediaPlayer.start();

but when I run app I have exception.this is a my logcat exception -

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.media.MediaPlayer.start()' on a null object reference

How I can solve my problem? If anyone knows solution,please help me. Thanks in advance.

This question has already an answer. http://stackoverflow.com/a/5466930/1872157 — Sachin Thampan, Apr 10 '16 at 15:04
@SachinThampan Thampan i did not understood it.can you show me right source? — donoachua, Apr 10 '16 at 15:22

score 0 · Answer 1 · answered Apr 12 '16 at 08:37

The exception java.lang.NullPointerException: Attempt to invoke virtual method 'void android.media.MediaPlayer.start()' on a null object reference of course means that you are trying to call the start() method on a MediaPlayer object that is null.

This of course means that the call MediaPlayer mediaPlayer=MediaPlayer.create(MainActivity.this,R.raw.music_1); has returned null.

Possible reasons for that are

MainActivity.this does not represent a valid Context at the point of your code where you have this call
R.raw.music_1 does not actually point to any file
The MP3 file in your ...res/raw/ folder is corrupted
The MP3 file in your ...res/raw/ folder is not in a supported format

can not play mp3 file from raw folder in android

1 Answers1