我有一个列表和自定义适配器。一个项目包含文本，2个按钮和一个搜索栏。
public class RecordAdapter extends BaseAdapter {
private MediaPlayer mediaPlayer;
private LayoutInflater inflater;
private ArrayList<RecordBean> recordBeans;
private final Handler handler = new Handler();
private Context ctx;
private int pos;
private AudioManager am;
public RecordAdapter(final Context ctx, ArrayList<RecordBean> recordBeans) {
this.recordBeans = recordBeans;
this.ctx = ctx;
inflater = LayoutInflater.from(ctx);
am = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
}
@Override
public int getCount() {
return recordBeans.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
final ViewHolder holder;
pos = position;
if (convertView == null) {
view = inflater.inflate(R.layout.recorditem, parent, false);
holder = new ViewHolder();
holder.date = (TextView) view.findViewById(R.id.recordate);
holder.from = (TextView) view.findViewById(R.id.recordFrom);
holder.to = (TextView) view.findViewById(R.id.recordTo);
holder.seekBar = (SeekBar) view.findViewById(R.id.seekBar);
holder.start = (Button) view.findViewById(R.id.btnStart);
holder.stop = (Button) view.findViewById(R.id.btnStop);
holder.start.setTextColor(Color.WHITE);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
holder.date.setText(" " + recordBeans.get(position).getDate());
holder.from.setText(" c: " + recordBeans.get(position).getFrom());
holder.to.setText(" на: " + recordBeans.get(position).getTo());
holder.seekBar.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
seekChange(v);
return false;
}
});
holder.start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
releaseMP();
try {
mediaPlayer = new MediaPlayer();
mediaPlayer.setDataSource(recordBeans.get(pos).getFile());
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mediaPlayer) {
mediaPlayer.start();
holder.start.setTextColor(Color.RED);
holder.seekBar.setMax(mediaPlayer.getDuration());
startPlayProgressUpdater(holder.seekBar, holder.start);
}
});
mediaPlayer.prepareAsync();
} catch (IOException e) {
e.printStackTrace();
}
if (mediaPlayer == null) {
holder.start.setTextColor(Color.WHITE);
Toast.makeText(ctx, "Запись невозможно воспроизвести!", Toast.LENGTH_LONG).show();
return;
}
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mediaPlayer) {
Log.d("LOG_TAG", "onCompletion");
holder.start.setTextColor(Color.WHITE);
}
});
}
});
holder.stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mediaPlayer == null)
return;
mediaPlayer.stop();
holder.start.setTextColor(Color.WHITE);
}
});
return view;
}
private void seekChange(View v) {
if (mediaPlayer.isPlaying()) {
SeekBar sb = (SeekBar) v;
mediaPlayer.seekTo(sb.getProgress());
}
}
private void releaseMP() {
if (mediaPlayer != null) {
try {
mediaPlayer.release();
mediaPlayer = null;
} catch (Exception e) {
e.printStackTrace();
}
}
}
private static class ViewHolder {
TextView date;
TextView from;
TextView to;
SeekBar seekBar;
Button start;
Button stop;
}
public void startPlayProgressUpdater(final SeekBar seek, final Button start) {
seek.setProgress(mediaPlayer.getCurrentPosition());
if (mediaPlayer.isPlaying()) {
Runnable notification = new Runnable() {
public void run() {
startPlayProgressUpdater(seek,start);
}
};
handler.postDelayed(notification, 1000);
} else {
mediaPlayer.pause();
seek.setProgress(0);
start.setTextColor(Color.WHITE);
}
}
}
即我有一个包含音频文件和播放按钮的列表。当您单击要播放的文件时播放。通过点击停止 - 停止。但问题是我可以通过单击任何文件中的“停止”按钮来停止文件。例如，运行第一个文件并开始播放音乐。按下第二个文件上的停止，音乐停止了。