wifi管理

WifiActivity.java

public class WifiActivity extends Activity {
    /** Called when the activity is first created. */
	private Button startButton = null;
	private Button stopButton = null;
	private Button checkButton = null;
	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();
		}
    	
    }
}