Java Android:AudioTrack无法正常工作
我想用ListView制作一个活动,在单击列表项时播放不同的声音效果。我用MediaPlayer和SoundPool测试了这个功能,两者都很好 我实现了AudioTrack,但当我从ListView中单击一个项目时,它只播放噪音或崩溃,并说“音频缓冲区大小无效” 这是我的密码Java Android:AudioTrack无法正常工作,java,android,audiotrack,Java,Android,Audiotrack,我想用ListView制作一个活动,在单击列表项时播放不同的声音效果。我用MediaPlayer和SoundPool测试了这个功能,两者都很好 我实现了AudioTrack,但当我从ListView中单击一个项目时,它只播放噪音或崩溃,并说“音频缓冲区大小无效” 这是我的密码 public class ATSoundAdapter extends ArrayAdapter { private ArrayList<SoundData> mData; private C
public class ATSoundAdapter extends ArrayAdapter {
private ArrayList<SoundData> mData;
private Context context;
private AudioTrack at;
public ATSoundAdapter(Context context, ArrayList<SoundData> mData) {
super(context, -1);
this.context = context;
this.mData = mData;
}
public class ViewHolder {
private TextView mSoundNameTv;
private LinearLayout container;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = LayoutInflater.from(context)
.inflate(R.layout.list_item,
parent, false);
holder = new ViewHolder();
holder.mSoundNameTv = (TextView) convertView.findViewById(R.id.sound_name_tv);
holder.container = (LinearLayout) convertView.findViewById(R.id.container);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
final SoundData currentSound = mData.get(position);
if (currentSound != null) {
holder.mSoundNameTv.setText(currentSound.getSoundName());
holder.container.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
playAudioTrack(currentSound.getSoundResource());
}
});
}
return convertView;
}
private void playAudioTrack(int resource) {
int i = 0;
InputStream inputStream = context.getResources().openRawResource(resource);
long bufferSize = context.getResources().openRawResourceFd(resource).getLength();
byte[] buffer = new byte[(int)bufferSize];
try {
int lengthOfAudioClip = inputStream.read(buffer, 0, buffer.length);
AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC,
44100, AudioFormat.CHANNEL_OUT_STEREO,
AudioFormat.ENCODING_PCM_16BIT,
lengthOfAudioClip, AudioTrack.MODE_STATIC);
at.write(buffer, 0, lengthOfAudioClip);
inputStream.close();
at.play();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public int getCount() {
return mData.size();
}
}
公共类ATSoundAdapter扩展了ArrayAdapter{
私有ArrayList mData;
私人语境;
私人音轨at;
公共ATSoundAdapter(上下文,ArrayList mData){
super(上下文-1);
this.context=上下文;
this.mData=mData;
}
公共类视图持有者{
私有文本视图mSoundNameTv;
专用线性布局集装箱;
}
@凌驾
公共视图getView(最终整数位置、视图转换视图、视图组父视图){
视窗座;
if(convertView==null){
convertView=LayoutInflater.from(上下文)
.充气(右布局列表项),
父母,假);
holder=新的ViewHolder();
holder.mSoundNameTv=(TextView)convertView.findViewById(R.id.sound\u name\u tv);
holder.container=(LinearLayout)convertView.findViewById(R.id.container);
convertView.setTag(支架);
}否则{
holder=(ViewHolder)convertView.getTag();
}
最终声音数据currentSound=mData.get(位置);
如果(currentSound!=null){
holder.mSoundNameTv.setText(currentSound.getSoundName());
holder.container.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图v){
播放音频曲目(currentSound.getSoundResource());
}
});
}
返回视图;
}
专用void playAudioTrack(内部资源){
int i=0;
InputStream InputStream=context.getResources().openRawResource(资源);
long bufferSize=context.getResources().openrawsourcefd(resource.getLength();
byte[]buffer=新字节[(int)bufferSize];
试一试{
int lengthOfAudioClip=inputStream.read(buffer,0,buffer.length);
AudioTrack at=新的AudioTrack(AudioManager.STREAM_MUSIC,
44100,AudioFormat.CHANNEL\u OUT\u立体声,
AudioFormat.ENCODING_PCM_16位,
长距离音频剪辑、音轨、模式(静态);
at.write(缓冲区,0,长度片段);
inputStream.close();
at.play();
}捕获(IOE异常){
e、 printStackTrace();
}
}
@凌驾
public int getCount(){
返回mData.size();
}
}
我认为字节数组的大小是错误的。。。但是当我在logcat中检查它时,它正好是原始文件的大小。
我是android新手,不知道如何使用AudioTrack
提前谢谢 您可以更改代码
AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, lengthOfAudioClip, AudioTrack.MODE_STREAM);
或者您可以检查此项那么
MediaPlayer
和SoundPool
有什么问题检查这个