android手机两种方式获取IP地址

android手机两种方式获取IP地址

1.使用WIFI

首先设置用户权限

Xml代码
<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>

 

其次,代码如下

Java代码

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);  

//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);

EditText et = (EditText)findViewById(R.id.EditText01);

et.setText(ip);

}

private String intToIp(int i) {  

return (i & 0xFF ) + "." +

((i >> 8 ) & 0xFF) + "." +

((i >> 16 ) & 0xFF) + "." +

  1. ( i >> 24 & 0xFF) ;
  2. }

 

2.使用GPRS

首先,设置用户上网权限

Xml代码

<uses-permission android:name="android.permission.INTERNET">uses-permission>

 

其次,代码如下

Java代码

public String getLocalIpAddress()

{

try

{

for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();)

{

NetworkInterface intf = en.nextElement();

for (Enumeration 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;

}