请问以下的代码中,为什么我调试的时候socket的值总是null?把socket = new Socket(InetAddress.getByName(remoteIP), port)改成socket = new Socket(remoteIP, port)后socket的值依然是null,直接就抛出了。为什么会这样呢?我的mainfest中也添加了权限<uses-permission android:name="android.permission.INTERNET"></uses-permission>。
package com.testandroid2_1.app;import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;import android.app.Activity;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;public class TestAndroid extends Activity {
private String remoteIP="192.168.1.100";
private int port=6245;
private Socket socket=null;
private ParcelFileDescriptor pfd;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
socket = new Socket(InetAddress.getByName(remoteIP), port);
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} pfd = ParcelFileDescriptor.fromSocket(socket);
}
}
Mainfest:<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.testandroid2_1.app"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".TestAndroid"
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>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
请问为什么还是无法创建socket呢?望高手指教,谢谢!
package com.testandroid2_1.app;import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;import android.app.Activity;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;public class TestAndroid extends Activity {
private String remoteIP="192.168.1.100";
private int port=6245;
private Socket socket=null;
private ParcelFileDescriptor pfd;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
socket = new Socket(InetAddress.getByName(remoteIP), port);
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} pfd = ParcelFileDescriptor.fromSocket(socket);
}
}
Mainfest:<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.testandroid2_1.app"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".TestAndroid"
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>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>
请问为什么还是无法创建socket呢?望高手指教,谢谢!
解决方案 »
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