Android MediaPlayer暂停

Question

The problem I am having at the moment is that my pause is not always working. What I have is an MediaPlayer in main activity that is operated via ActionBarSherlock and onClick listeners. MediaPlayer is using ArrayList with URLs of MP3 files(some of them 1sec long).

Pause code:

       if (player.isPlaying()) {
            if (player != null) {
                player.pause();
                swapPlayIcon(1);
                isPaused = true;
                pauseMenuButt.setVisible(false);
                playMenuButt.setVisible(true);
            }
        }

swapPlayIcon(int) handles only visibility and drawable swaps.

Start code:

    Iterator<Uri> iterUri = tracks.iterator();
    while (iterUri.hasNext()) {
        Uri tmpUri = iterUri.next();
        try {
            player.reset();
            player.setDataSource(String.valueOf(tmpUri));
            player.prepare();
            player.start();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

After more testing I have found out that the problem appear in "in between" state.

What I mean is that when my MP3 file is 2sec long and I click pause its not stopping becouse it just have ended reading one file and now moved on to the next one.

I have added:

      } else {
          pauseLocked = true;
      }

to pause if statment and it does not land in it at all while testing. So im not sure about the "in between" problem that I have found out previously.

Answer 1

Your pause button is not working because there's no way for its message to ever reach the MediaPlayer until you've started the last URL. You are entirely blocking the thread your MediaPlayer is running on (I'm assuming it's the UI thread since the MediaPlayer is in your main activity). If you're creating your MediaPlayer on the same thread as your UI, you should use the asynchronous version of prepare: prepareAsync. You need to respond once you receive the onMediaPrepared callback and then start the media. Once that happens you must do nothing and wait for the media to finish, only then should you load another url.