[其他交流] android 判断网络状态

android 判断网络状态
[java] view plaincopy

package com.example.android;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.URL;
import java.util.Enumeration;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;
public class NetStatus {
public static int NET_CNNT_BAIDU_OK = 1; // 正常访问因特网状态
public static int NET_CNNT_BAIDU_TIMEOUT = 2; // 无法访问因特网状态
public static int NET_NOT_PREPARE = 3; // 网络未准备好
public static int NET_ERROR = 4;
private static int TIMEOUT = 3000;
/**
* 返回当前网络状态
*
* @param context
* @return
*/
public static int getNetState(Context context) {
try {
ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo networkinfo = connectivity.getActiveNetworkInfo();
if (networkinfo != null) {
if (networkinfo.isAvailable() && networkinfo.isConnected()) {
if (!connectionNetwork())
return NET_CNNT_BAIDU_TIMEOUT;
else
return NET_CNNT_BAIDU_OK;
} else {
return NET_NOT_PREPARE;
}
}
}
} catch (Exception e) {
}
return NET_ERROR;
}
/**
* 拼百度地址
*
* @return
*/
private static boolean connectionNetwork() {
boolean result = false;
HttpURLConnection httpUrl = null;
try {
httpUrl = (HttpURLConnection) new URL("http://www.baidu.com").openConnection();
httpUrl.setConnectTimeout(TIMEOUT);
httpUrl.connect();
result = true;
} catch (IOException e) {
} finally {
if (null != httpUrl) {
httpUrl.disconnect();
}
httpUrl = null;
}
return result;
}
/**
* 判断当前网络是否是3G网络
*
* @param context
* @return boolean
*/
public static boolean is3G(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
return true;
}
return false;
}
/**
* 判断当前网络是否是wifi网络
*
* @param context
* @return boolean
*/
public static boolean isWifi(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {
return true;
}
return false;
}

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[其他交流] android 判断网络状态

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