AudioTrack的Andr​​oid播放的声音从原文件夹

问题描述

是它可以从资源文件夹中的原始播放wav文件AudioTrack？它试了很多办法来引用我的Andr​​oid项目的原始文件，但我得到了很多例外。

这是我现在有，但是，当I $上的按钮p $ PSS，无声音播放。

 公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    按钮buttonPlayAudioTrack =（按钮）findViewById（R.id.buttonPlayAudioTrack）;
    buttonPlayAudioTrack.setOnClickListener（本）;

    INT minBufferSize = AudioTrack.getMinBufferSize（44100，AudioFormat.CHANNEL_CONFIGURATION_MONO，
                        AudioFormat.ENCODING_PCM_16BIT）;

    audioTrack =新AudioTrack（AudioManager.STREAM_MUSIC，44100，AudioFormat.CHANNEL_CONFIGURATION_MONO，
                     AudioFormat.ENCODING_PCM_16BIT，minBufferSize，AudioTrack.MODE_STREAM）;
}
公共无效的onClick（视图v）{
    // TODO自动生成方法存根
    如果（v.getId（）== R.id.buttonPlayAudioTrack）
        playSound（）;
}

私人无效playSound（）{

audioTrack.play（）;
    INT I = 0;
    INT缓冲区大小= 512;
    byte []的缓冲区=新的字节[BUFFERSIZE]
    InputStream中的InputStream = getResources（）openRawResource（R.raw.piano12）。
    尝试 {
        而（（ⅰ= inputStream.read（））！=  -  1）
            audioTrack.write（缓冲液，0，i）的;
    }赶上（IOException异常E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }
    尝试 {
        inputStream.close（）;
    }赶上（IOException异常E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }
}
 

解决方案

一切都很好，你的code，你只需要改变

 ，而（（I = inputStream.read（））！= -1）
 

到

 ，而（（I = inputStream.read（缓冲））！= -1）
 

is it possible to play wav files with AudioTrack from the resources folder raw? It tried many ways to reference the raw files in my android project, but i got many Exceptions.

this is what i have now, but when i press on the button, no sound is playing.

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Button buttonPlayAudioTrack = (Button) findViewById(R.id.buttonPlayAudioTrack);
    buttonPlayAudioTrack.setOnClickListener(this);

    int minBufferSize = AudioTrack.getMinBufferSize(44100, AudioFormat.CHANNEL_CONFIGURATION_MONO,
                        AudioFormat.ENCODING_PCM_16BIT);

    audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_CONFIGURATION_MONO,
                     AudioFormat.ENCODING_PCM_16BIT, minBufferSize, AudioTrack.MODE_STREAM);
}
public void onClick(View v) {
    // TODO Auto-generated method stub
    if(v.getId() == R.id.buttonPlayAudioTrack)
        playSound();
}

private void playSound() {

audioTrack.play();
    int i = 0;
    int bufferSize = 512;
    byte [] buffer = new byte[bufferSize];
    InputStream inputStream = getResources().openRawResource(R.raw.piano12);
    try {
        while((i = inputStream.read()) != -1)
            audioTrack.write(buffer, 0, i);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        inputStream.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

解决方案

Everything is fine with your code, You just need to change

while((i = inputStream.read()) != -1)

to

while((i = inputStream.read(buffer)) != -1)

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