android 打开wifi

 

WifiManager wifiManager = (WifiManager) MainActivity.this.getSystemService(Context.WIFI_SERVICE);

 

wifiManager.setWifiEnabled(true); // 打开关闭

 

System.out.println("wifi state --->"+ wifiManager.getWifiState());

 

Toast.makeText(MainActivity.this, "当前网卡状态为：" + wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();

 

 

 

检查

 

 wifiManager=(WifiManager)WifiIsConnectActivity.this.getSystemService(Context.WIFI_SERVICE);           

  

                        System.out.println("wifi state --->"+wifiManager.getWifiState()); 

  

                        Toast.makeText(WifiIsConnectActivity.this, "当前网卡状态为："+wifiManager.getWifiState(), Toast.LENGTH_SHORT).show();