Android 获取ip地址

获取ip地址
1.使用WIFI
首先设置用户权限

<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

>

//获取wifi服务       
		WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
		//判断wifi是否开启      
		if (!wifiManager.isWifiEnabled()) {        
			wifiManager.setWifiEnabled(true);         
		}       
		WifiInfo wifiInfo = wifiManager.getConnectionInfo();            
		int ipAddress = wifiInfo.getIpAddress();         
		String ip = intToIp(ipAddress); 
		TextView tv=(TextView) findViewById(R.id.ip);
		tv.setText("本机ip:"+ip);

private String intToIp(int i) {                    
		return (i & 0xFF ) + "." +          
				((i >> 8 ) & 0xFF) + "." +           
				((i >> 16 ) & 0xFF) + "." +            
				( i >> 24 & 0xFF) ;   
	} 

2.使用GPRS

//首先，设置用户上网权限
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
public 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("WifiPreference IpAddress", ex.toString());        }      
		return null;
	}