Why does MediaPlayer not prepare?

Question

I'm using MediaPlayer to load an mp3 file and play it online. I am using this code:

try{
    Log.i("tag1", "try");
    mediaPlayer.setDataSource(activity.this, Uri.parse("link"));
    mediaPlayer.prepareAsync();
    mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            Log.i("tag2", "" + mediaPlayer.getDuration());
        }
    });
    } catch(IOException e) {
    e.printStackTrace();
}

Most of the times nothing is prepared, so I have the log.i results as below:

tag1 = try

tag2 is never executed

If, sometimes only, mediaPlayer is prepared, I get these logs:

tag1 = try

tag2 = 0 _ which is neither acceptable nor usable

Also, when I call mediaPlayer.setOnErrorListener, I get errors 1,-1004 or 1,-2147483648. Additionally, mediaPlayer.setOnInfoListener gives nothing; I think it's never called...

What could be the problem?

It is not unnecessary to mention that in the log folder of the server's file manager, I found this: "stagefright/1.2 (Linux; Android 4.4.4)". I think this could help to solve the problem. Also, related to this, can the problem be caused by PHP extensions? if yes, activating which extension solves this issue?

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Any help is really appreciated.

Answer 1

Of course, I thank all my friends who put their most effort to answer this problem of mine, but none of them solved the main issue.

How I came to find a way to get rid of this situation:

I tried another Host for my files and it worked. So I decided to move all my data and databases to another Host.