android开发教程之wifi开发示例

        }  
    }  
    class CheckStateListener implements OnClickListener {  
        @Override  
        public void onClick(View v) {  
            wifiManager = (WifiManager) WifiActivity.this  
                    .getSystemService(Context.WIFI_SERVICE);  
            switch (wifiManager.getWifiState()) {  
            case WifiManager.WIFI_STATE_DISABLED:  
                res = "WIFI已关闭";  
                break;  
            case WifiManager.WIFI_STATE_DISABLING:  
                res = "WIFI正在关闭中";  
                break;  
            case WifiManager.WIFI_STATE_ENABLED:  
                res = "WIFI已启用";  
                break;  
            case WifiManager.WIFI_STATE_ENABLING:  
                res = "WIFI正在启动中";  
                break;  
            case WifiManager.WIFI_STATE_UNKNOWN:  
                res = "未知WIFI状态";  
                break;  
            }  
            Toast.makeText(WifiActivity.this, res, Toast.LENGTH_SHORT).show();  
        }  
    }