WiFI管理相关类

1.管理wifi :

private WifiManager wifiManager = null;

 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        startButton = (Button)findViewById(R.id.startWifi);
        stopButton = (Button)findViewById(R.id.stopWifi);
        checkButton = (Button)findViewById(R.id.checkWifi);
        startButton.setOnClickListener(new StartWifiListener());
        stopButton.setOnClickListener(new StopWifiListener());
        checkButton.setOnClickListener(new CheckWifiListener());
    }
    class StartWifiListener implements OnClickListener{

  @Override
  public void onClick(View v) {
   wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);
   wifiManager.setWifiEnabled(true);
   System.out.println("wifi state --->" + wifiManager.getWifiState());
   Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();
  }
    }
    class StopWifiListener implements OnClickListener{

  @Override
  public void onClick(View arg0) {
   // TODO Auto-generated method stub
   wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);
   wifiManager.setWifiEnabled(false);
   System.out.println("wifi state --->" + wifiManager.getWifiState());
   Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();
  }
   
    }
   
    class CheckWifiListener implements OnClickListener{

  @Override
  public void onClick(View v) {
   wifiManager = (WifiManager)WifiActivity.this.getSystemService(Context.WIFI_SERVICE);
   System.out.println("wifi state --->" + wifiManager.getWifiState());
   Toast.makeText(WifiActivity.this, "当前Wifi网卡状态为" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();
  }
     
    }