Question

我有一系列ListView行，由简单的ViewHolder辅助ArrayAdapter支持，每行都有一个＆＃39;播放/暂停＆＃39;按钮，用于暂停和恢复服务中的MediaPlayer，

然而，点击其中一个按钮会导致音乐开始，点击任何后续按钮播放并暂停原始按钮，而不是我实际点击的按钮，我之前从未遇到过这样的问题？

    View row = convertView;
    ViewHolder holder;

    if (row == null) {

        LayoutInflater inflater = ((Activity) context).getLayoutInflater();
        row = inflater.inflate(layoutResourceId, parent, false);
        holder = new ViewHolder();

        holder.play_podcast_btn = (ImageButton) row.findViewById(R.id.play_episode_btn);
        row.setTag(holder);
    } else {
        holder = (ViewHolder) row.getTag();
        holder.play_podcast_btn.setTag(holder);
    }

和

    static class ViewHolder {           
        ImageButton play_podcast_btn;
    }

和

    holder.play_podcast_btn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            final ImageButton play_podcast_btn =(ImageButton)v;

            if(podCastPlaying == false) 
            {
                startNewPodcast();
            }
            else
            {
                ((MainActivity) context).togglePlayPause();
            }
        }
    });

回调：

在MediaPlayer服务中:( BusProvider提供回调启动服务的活动：下面）

public void pause() {
    mediaPlayer.pause();
    BusProvider.getInstance().post(new PodcastPausedEvent(true));
}

public void play() {
    mediaPlayer.start();
    BusProvider.getInstance().post(new PodcastPlayedEvent(true));
}

MainActivity :(被通知暂停并触发另一个回调，这次是到列表行）

@Subscribe
    public void OnPodcastPaused(PodcastPausedEvent obj) {
        onPodcastStatusListener.podcastPaused();
        play_pause_button.setImageResource(R.drawable.ic_play_button_black);
    }

    @Subscribe
    public void OnPodcastPlayed(PodcastPlayedEvent obj) {
        onPodcastStatusListener.podcastPlayed();
        play_pause_button.setImageResource(R.drawable.ic_pause_button_black);

    }

并在ListView Row ImageButton onClick：

((MainActivity) context).preparePodcast(item.getFilename(), item.getItem_title(), item.getChannel_title(), 
                        item.getItem_pubdate(), item.getItem_description()).setPodcastStatusListener(new podcastStatusListener(){


                            @Override
                            public void podcastPrepared() {                     
                                mH.podCastPlaying = false;
                            }

                            @Override
                            public void podcastPlayed() {
                                mH.play_podcast_btn.setImageResource(R.drawable.pause_button_overlay);  
                                mH.podCastPlaying = true;

                            }

                            @Override
                            public void podcastPaused() {
                                mH.play_podcast_btn.setImageResource(R.drawable.play_button_overlay);   

                            }

                            @Override
                            public void podcastComplete() {
                                mH.podCastPlaying = false;

                            }
                        });
                }
                else
                {
                    ((MainActivity) context).togglePlayPause();
                }

以及上面调用的函数的代码

public MainActivity preparePodcast(String path, String podcastTitle, String channelName, String date_time_string, String desc)
{

    pod_loading_indicator.setVisibility(View.VISIBLE);
    PodcastPlayerService.preparePlayer("http://lbc.audioagain.com/shared/audio/" + path); //boils down to mediaplayer.prepareAsync();
    current_podcast_tv.setText(podcastTitle);
    channel_name_tv.setText(channelName);
    episode_date_time.setText(date_time_string);
    episode_description.setText(desc);

    return this;
}

ListView按钮是否影响完全独立的行按钮？

0 个答案: