【Android基础】Android网络类型判断及IP地址获取

参考地址：http://blog.sina.com.cn/s/blog_5da93c8f0102vg21.html

http://www.cnblogs.com/android100/p/Android-get-ip.html

http://blog.csdn.net/xundh/article/details/44916177

用户权限：

<uses-permission android:name="android.permission.INTERNET"></uses-permission>  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>  <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>  <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>  

判断有无网络连接：

ConnectivityManager mConnectivity = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE); TelephonyManager mTelephony = (TelephonyManager)this.getSystemService(TELEPHONY_SERVICE); //检查网络连接 NetworkInfo info = mConnectivity.getActiveNetworkInfo(); if (info == null || !mConnectivity.getBackgroundDataSetting()) { return false; } 

判断WiFi是否已连接：

/** * make true current connect service is wifi * @param mContext * @return */private static boolean isWifi(Context mContext) {ConnectivityManager connectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {return true;}return false;}

判断WiFi和移动流量是否已连接：

 public static boolean checkNetworkConnection(Context context)    {        final ConnectivityManager connMgr = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);        final android.net.NetworkInfo wifi =connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);        final android.net.NetworkInfo mobile =connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);        if(wifi.isAvailable()||mobile.isAvailable())  //getState()方法是查询是否连接了数据网络            return true;        else            return false;    }

只判断移动网络连接是否正常：

            ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);              NetworkInfo mMobileNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);   //获取移动网络信息            if (mMobileNetworkInfo != null) {                  return mMobileNetworkInfo.isAvailable();    //getState()方法是查询是否连接了数据网络            }          }          return false;      }

一个工具类：

import java.net.InetAddress;import java.net.NetworkInterface;import java.net.SocketException;import java.util.Enumeration;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.provider.Settings;import android.telephony.TelephonyManager;import android.util.Log;public class NetWorkUtils {//Context context;public static boolean isNetWorkAvaliable(Context context){ConnectivityManager connect = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);if(connect == null){return false;}else{NetworkInfo[] info = connect.getAllNetworkInfo();if(info != null){for(int i=0;i<info.length;i++){if(info[i].getState() == NetworkInfo.State.CONNECTED){//网络可用return true;}}}}return false;}public static void setNetwork(final Context context){AlertDialog.Builder builder = new AlertDialog.Builder(context);builder.setIcon(android.R.drawable.ic_dialog_alert);builder.setTitle("当前无网络连接，是否进行设置？");builder.setPositiveButton("设置", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub//Intent mintent = new Intent();//ComponentName comp = new ComponentName("com.android.settings","com.android.settings.WirelessSettings");//mintent.setComponent(comp);//mintent.setAction("android.intent.action.VIEW");//startActivity(mintent);context.startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));}});builder.setNegativeButton("下次再说", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubdialog.cancel();}});builder.create();builder.show();}public static String getIpAddress(Context context) {ConnectivityManager connect = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);//检查网络连接   NetworkInfo info = connect.getActiveNetworkInfo(); int netType = info.getType(); int netSubtype = info.getSubtype(); if (netType == ConnectivityManager.TYPE_WIFI) {  //WIFIreturn getWifiIpAddress(context);} else if (netType == ConnectivityManager.TYPE_MOBILE ) {   //MOBILEreturn getLocalIpAddress();} else {    return "127.0.0.1"; }}//使用wifipublic static String getWifiIpAddress(Context context) {//获取wifi服务WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);//判断wifi是否开启   //             if (!wifiManager.isWifiEnabled()) {   //      <span style="white-space:pre"></span>   wifiManager.setWifiEnabled(true);     //             }WifiInfo wifiInfo = wifiManager.getConnectionInfo();int ipAddress = wifiInfo.getIpAddress();String ip = intToIp(ipAddress);return ip;}private static String intToIp(int i) {return (i & 0xFF ) + "." +((i >> 8 ) & 0xFF) + "." +((i >> 16 ) & 0xFF) + "." +( i >> 24 & 0xFF) ;}//使用GPRSpublic static String getLocalIpAddress() {try {for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {NetworkInterface intf = en.nextElement();for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {InetAddress inetAddress = enumIpAddr.nextElement();if (!inetAddress.isLoopbackAddress()) {return inetAddress.getHostAddress().toString();}}}} catch (SocketException ex) {Log.e("Exception", ex.toString());}return "127.0.0.1";}}