Android Wifi

wifi


WIFI_STATE_DISABLED：不可用
WIFI_STATE_DISABLING：正在關閉
WIFI_STATE_ENABLED：可用
WIFI_STATE_ENABLING：正在打開
WIFI_STATE_UNKNOWN：未知狀態


需要權限：
CHANGE_NETWORK_STATE
CHANGE_WIFI_STATE
ACCESS_NETWORK_STATE
ACCESS_WIFI_STATE


對wifi網卡進行的操作需要通過WifiManager對象來進行
WifiManager wifiManager = (WifiManager) Context.getSystemService


(Service.WIFI_SERVICE);


wifiManager.setWifiEnabled(true);

wifiManager.getWifiState();

一個打開wifi的例子

wifiManager = (WifiManager) WifiTestActivity.this
					.getSystemService(Context.WIFI_SERVICE);
			wifiManager.setWifiEnabled(true);
			Toast.makeText(WifiTestActivity.this, "wifi status:"
					+ wifiManager.getWifiState(), Toast.LENGTH_LONG);