android WiFi 开关代码

[代码]java代码：

private WifiManager mWm;
mWm = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
    if (mWm.isWifiEnabled()) {
            mWm.setWifiEnabled(false);
            txt.setText("Wifi OFF");
    }
    else {
            mWm.setWifiEnabled(true);
            txt.setText("Wifi ON");
    }

Manifest中要声明如下权限：

[代码]xml代码：

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