獲取手機WiFi Ip地址

如何獲取手機WiFi的ip地址，我就直接貼代碼吧：

public class MainActivity extends AppCompatActivity {

    private TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tv=(TextView)findViewById(R.id.tv1);
        //get wifi ip
        WifiManager wm = (WifiManager)getSystemService(Context.WIFI_SERVICE);
        if(wm.isWifiEnabled()){
            System.out.println("wifi is open");
            WifiInfo wifiInfo= wm.getConnectionInfo();
            String ip=intToIp(wifiInfo.getIpAddress());
            tv.setText(ip);
        }
        else {
            tv.setText("wifi is closed");
        }
    }<pre name="code" class="java">    //wifi:轉換ip
    private String intToIp(int i)  {
        String temp;
        temp= (i & 0xFF)+ "." + ((i >> 8 ) & 0xFF) + "." + ((i >> 16 ) & 0xFF) +"."+((i >> 24 ) & 0xFF );
        return temp;
    }

}

Manifest.xml需要加權限：

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

運行就能得出ip地址了。