获取设备的MAC地址 - 当wifi关闭时

Question

我使用以下代码找到Android设备的MAC地址:

WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = manager.getConnectionInfo();
String address = info.getMacAddress());

但在这种情况下,当Wifi关闭时,我无法获得MAC地址.即使WIFI关闭,如何获取Android设备的MAC地址.

谢谢

Answer 1

为什么不立即启用Wifi,直到你获得MAC地址,然后在获得MAC地址后禁用它？

当然,这样做是因为获取MAC地址绝对重要.

未经编码的代码

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

if(wifiManager.isWifiEnabled()) {
    // WIFI ALREADY ENABLED. GRAB THE MAC ADDRESS HERE
    WifiInfo info = wifiManager.getConnectionInfo();
    String address = info.getMacAddress();
} else {
    // ENABLE THE WIFI FIRST
    wifiManager.setWifiEnabled(true);

    // WIFI IS NOW ENABLED. GRAB THE MAC ADDRESS HERE
    WifiInfo info = wifiManager.getConnectionInfo();
    String address = info.getMacAddress();
}

您将需要在Manifest中设置这些权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.UPDATE_DEVICE_STATS"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>

我不完全确定UPDATE_DEVICE_STATS在这种情况下是否需要许可.请在决定保留之前尝试一下.