我正在制作一个Android应用程序来使用IP地址调用其他Android设备。我这里有代码用于发送音频呼叫，但它在java中。我想在Android中尝试这个。此代码来自Java代码。
以下是代码：
MainActivity.java
import java.net.DatagramSocket;
import javax.swing.DefaultListModel;
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;
DefaultListModel<String> on = null;
Button btnStart;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnStart = (Button) findViewById(R.id.btnStart);
btnStart.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
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 DefaultListModel<String>();
on.addElement("192.168.1.100");
try{
sock = new DatagramSocket(4003);
}catch(Exception e){
}
Thread speaker = new Thread(new Speaker(sock));
Thread mic = new Thread(new Microphone(sock, 4003, on));
speaker.start();
mic.start();
}
}
Microphone.java
package com.example.voip;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.util.ArrayList;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.TargetDataLine;
import javax.swing.DefaultListModel;
import android.content.pm.PackageManager;
public class Microphone implements Runnable{
private DatagramSocket sock = null;
private int port = 0;
private DefaultListModel<String> on = null;
public Microphone(DatagramSocket d,int recPort,DefaultListModel<String> joi) {
this.sock = d;
this.on = joi;
this.port =recPort;
}
@Override
public void run(){
try {
AudioFormat af = new AudioFormat(8000.0f, 8, 1, true, false);
DataLine.Info info = new DataLine.Info(TargetDataLine.class, af);
TargetDataLine microphone = (TargetDataLine) AudioSystem.getLine(info);
microphone.open(af);
microphone.start();
byte[] soundData = new byte[1];
int bytesRead = 0;
while (bytesRead != -1) {
bytesRead = microphone.read(soundData, 0, soundData.length);
if (bytesRead >= 0) {
for (int y = 0; y < on.size(); y++) {
DatagramPacket pac = new DatagramPacket(soundData,
soundData.length,
InetAddress.getByName(on.getElementAt(y).toString()),
port);
sock.send(pac);
}
}
Thread.sleep(0);
}
} catch (Exception e) {
}
}
/**
* @param sock the sock to set
*/
public void setSock(DatagramSocket sock) {
this.sock = sock;
}
/**
* @param port the port to set
*/
public void setPort(int port) {
this.port = port;
}
/**
* @param on the on to set
*/
public void setOn(DefaultListModel<String> on) {
this.on = on;
}
}
Speaker.java
package com.example.voip;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
public class Speaker implements Runnable {
private DatagramSocket soc = null;
DatagramPacket pack = null;
SourceDataLine inSpeaker = null;
public Speaker(DatagramSocket s) {
try {
this.soc = s;
AudioFormat af = new AudioFormat(8000.0f, 8, 1, true, false);
DataLine.Info info = new DataLine.Info(SourceDataLine.class, af);
inSpeaker = (SourceDataLine) AudioSystem.getLine(info);
inSpeaker.open(af);
System.out.println("Speak");
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
public void run() {
int bytesRead = 1;
byte[] inSound = new byte[1];
inSpeaker.start();
while (bytesRead != -1) {
pack = new DatagramPacket(inSound, inSound.length);
try {
soc.receive(pack);
if (bytesRead >= 0) {
inSpeaker.write(inSound, 0, bytesRead);
}
} catch (IOException ex) {
System.out.println(ex.getMessage());
}
}
}
/**
* @param soc the soc to set
*/
public void setSoc(DatagramSocket soc) {
this.soc = soc;
}
}
activity_main.xml中
<?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>
的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-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>
</application>
</manifest>
ERROR：
10-30 21:07:11.939: W/dalvikvm(16081): threadid=1: thread exiting with uncaught exception (group=0x40dbd908)
10-30 21:07:11.943: E/AndroidRuntime(16081): FATAL EXCEPTION: main
10-30 21:07:11.943: E/AndroidRuntime(16081): java.lang.NoClassDefFoundError: javax.swing.DefaultListModel
10-30 21:07:11.943: E/AndroidRuntime(16081): at com.example.call.MainActivity.disp(MainActivity.java:43)
10-30 21:07:11.943: E/AndroidRuntime(16081): at com.example.call.MainActivity$1.onClick(MainActivity.java:30)
10-30 21:07:11.943: E/AndroidRuntime(16081): at android.view.View.performClick(View.java:4091)
10-30 21:07:11.943: E/AndroidRuntime(16081): at android.view.View$PerformClick.run(View.java:17072)
10-30 21:07:11.943: E/AndroidRuntime(16081): at android.os.Handler.handleCallback(Handler.java:615)
10-30 21:07:11.943: E/AndroidRuntime(16081): at android.os.Handler.dispatchMessage(Handler.java:92)
10-30 21:07:11.943: E/AndroidRuntime(16081): at android.os.Looper.loop(Looper.java:153)
10-30 21:07:11.943: E/AndroidRuntime(16081): at android.app.ActivityThread.main(ActivityThread.java:5086)
10-30 21:07:11.943: E/AndroidRuntime(16081): at java.lang.reflect.Method.invokeNative(Native Method)
10-30 21:07:11.943: E/AndroidRuntime(16081): at java.lang.reflect.Method.invoke(Method.java:511)
10-30 21:07:11.943: E/AndroidRuntime(16081): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821)
10-30 21:07:11.943: E/AndroidRuntime(16081): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
10-30 21:07:11.943: E/AndroidRuntime(16081): at dalvik.system.NativeStart.main(Native Method)
我的问题是当我运行应用程序然后单击开始按钮时，它总是崩溃并说“不幸的是，等等等等已经停止”。有没有办法使用这个代码？请帮忙。 =（
提前致谢。
答案 0 :(得分：0)
导入
javax.sound.sampled.AudioFormat;
javax.sound.sampled.AudioSystem;
javax.sound.sampled.DataLine;
javax.sound.sampled.SourceDataLine;
打包到您的项目（如果可能），否则使用Android Audio API