Java 使用录音和音轨实现AoIP（IP音频）

我想为我的项目制作一个应用程序。它看起来像一个Android呼叫应用程序，可以通过网络中Android手机的IP地址发送语音。但我的问题是我无法接收音频。我的录音很好用

这是我的密码：

MainActivity.java

import java.net.DatagramSocket;
import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.example.voip.Microphone;
import com.example.voip.Speaker;
public class MainActivity extends Activity {
     DatagramSocket sock = null;
     ArrayList<String> on = null;
     Button btnStart;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
        btnStart = (Button) findViewById(R.id.btnStart);
        btnStart.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                disp();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    public void disp(){
        on = new ArrayList<String>();
           on.add("192.168.1.103");
            try{
                sock = new DatagramSocket(4003);
            }catch(Exception e){

            }
            Thread mic = new Thread(new Microphone(sock, 4003, on));
            mic.start();
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.call"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="16"
        android:targetSdkVersion="16" />
    <uses-permission android:name="android.permission.USE_SIP" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"></uses-permission>

    <uses-feature android:name="android.hardware.microphone" android:required="true"/>
    <uses-feature android:name="android.hardware.wifi" android:required="true" />


    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.call.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name="com.example.call.Receiver"></receiver>
    </application>

</manifest>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="20dip">

    <ImageView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:scaleType="fitCenter"/>

        <TextView  
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Info"
        android:layout_weight="1.0"
        android:textSize="20dip"/>

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">

        <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/btnStart"
                android:text="Start Recording"
                android:layout_weight="1.0"/>

                <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/btnStop"
                android:text="Stop Recording"
                android:layout_weight="1.0"/>
    </LinearLayout>
</LinearLayout>

完全没有错误。但我听不到任何声音。请帮忙=(

---

提前感谢。

Speaker.java中的此代码不正确：

    int bufferSize = AudioRecord.getMinBufferSize(freq,
            AudioFormat.CHANNEL_CONFIGURATION_MONO,
            AudioFormat.ENCODING_PCM_16BIT);
    inSpeaker = new AudioTrack(AudioManager.ROUTE_HEADSET, freq,
                AudioFormat.CHANNEL_CONFIGURATION_MONO,
                MediaRecorder.AudioEncoder.AMR_NB, bufferSize,
                AudioTrack.MODE_STREAM);

应该是：

    int bufferSize = AudioTrack.getMinBufferSize(freq,
            AudioFormat.CHANNEL_OUT_MONO,
            AudioFormat.ENCODING_PCM_16BIT);
    inSpeaker = new AudioTrack(AudioManager.STREAM_MUSIC, freq,
                AudioFormat.CHANNEL_OUT_MONO,
                AudioFormat.ENCODING_PCM_16BIT, bufferSize,
                AudioTrack.MODE_STREAM);

    int bufferSize = AudioRecord.getMinBufferSize(freq,
            AudioFormat.CHANNEL_CONFIGURATION_MONO,
            AudioFormat.ENCODING_PCM_16BIT);
    inSpeaker = new AudioTrack(AudioManager.ROUTE_HEADSET, freq,
                AudioFormat.CHANNEL_CONFIGURATION_MONO,
                MediaRecorder.AudioEncoder.AMR_NB, bufferSize,
                AudioTrack.MODE_STREAM);

    int bufferSize = AudioTrack.getMinBufferSize(freq,
            AudioFormat.CHANNEL_OUT_MONO,
            AudioFormat.ENCODING_PCM_16BIT);
    inSpeaker = new AudioTrack(AudioManager.STREAM_MUSIC, freq,
                AudioFormat.CHANNEL_OUT_MONO,
                AudioFormat.ENCODING_PCM_16BIT, bufferSize,
                AudioTrack.MODE_STREAM);