package eoe.demo.wifi; 
 
import java.net.Inet4Address; 
import java.util.List; 
import android.app.Activity; 
import android.content.Context; 
import android.net.wifi.WifiConfiguration; 
import android.net.wifi.WifiInfo; 
import android.net.wifi.WifiManager; 
import android.os.Bundle; 
import android.widget.CheckBox; 
import android.widget.CompoundButton; 
import android.widget.TextView; 
import android.widget.CompoundButton.OnCheckedChangeListener; 
 
public class Main extends Activity implements OnCheckedChangeListener { 
private WifiManager wifiManager; 
private WifiInfo wifiInfo; 
private CheckBox chkOpenCloseWifiBox; 
private List<WifiConfiguration> wifiConfigurations; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 
// 獲得WifiManager對象 
wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); 
// 獲得連接信息對象 
wifiInfo = wifiManager.getConnectionInfo(); 
chkOpenCloseWifiBox = (CheckBox) findViewById(R.id.chkOpenCloseWifi); 
TextView tvWifiConfigurations = (TextView) findViewById(R.id.tvWifiConfigurations); 
TextView tvWifiInfo = (TextView) findViewById(R.id.tvWifiInfo); chkOpenCloseWifiBox.setOnCheckedChangeListener(this); 
// 根據當前WIFI的狀態(tài)（是否被打開）設置復選框的選中狀態(tài) 
if (wifiManager.isWifiEnabled()) { 
chkOpenCloseWifiBox.setText("Wifi已開啟"); 
chkOpenCloseWifiBox.setChecked(true); 
} else { 
chkOpenCloseWifiBox.setText("Wifi已關閉"); 
chkOpenCloseWifiBox.setChecked(false); 
} 
// 獲得WIFI信息 
StringBuffer sb = new StringBuffer(); 
sb.append("Wifi信息\n"); 
sb.append("MAC地址：" + wifiInfo.getMacAddress() + "\n"); 
sb.append("接入點的BSSID：" + wifiInfo.getBSSID() + "\n"); 
sb.append("IP地址（int）：" + wifiInfo.getIpAddress() + "\n"); 
sb.append("IP地址（Hex）：" + Integer.toHexString(wifiInfo.getIpAddress()) + "\n"); sb.append("IP地址：" + ipIntToString(wifiInfo.getIpAddress()) + "\n"); 
sb.append("網絡ID：" + wifiInfo.getNetworkId() + "\n"); 
tvWifiInfo.setText(sb.toString()); 
// 得到配置好的網絡 
wifiConfigurations = wifiManager.getConfiguredNetworks(); 
tvWifiConfigurations.setText("已連接的無線網絡\n"); 
for (WifiConfiguration wifiConfiguration : wifiConfigurations) { 
tvWifiConfigurations.setText(tvWifiConfigurations.getText() + wifiConfiguration.SSID + "\n"); 
} 
} 
// 將int類型的IP轉換成字符串形式的IP 
private String ipIntToString(int ip) { 
try { 
byte[] bytes = new byte[4]; 
bytes[0] = (byte) (0xff & ip); 
bytes[1] = (byte) ((0xff00 & ip) >> 8); 
bytes[2] = (byte) ((0xff0000 & ip) >> 16); 
bytes[3] = (byte) ((0xff000000 & ip) >> 24); 
return Inet4Address.getByAddress(bytes).getHostAddress(); 
} catch (Exception e) { 
return ""; 
} 
} 
 
@Override 
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
// 當選中復選框時打開WIFI 
if (isChecked) { 
wifiManager.setWifiEnabled(true); 
chkOpenCloseWifiBox.setText("Wifi已開啟"); 
} 
// 當取消復選框選中狀態(tài)時關閉WIFI 
else { 
wifiManager.setWifiEnabled(false); 
chkOpenCloseWifiBox.setText("Wifi已關閉"); 
} 
} 
 
} 

 

XML/HTML代碼
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"> 
</uses-permission> 
<uses-permission android:name="android.permission.WAKE_LOCK"> 
</uses-permission> 
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"> 
</uses-permission>