fun Activity.isWifiApOpen(): Boolean {
    try {
        val manager = this.getSystemService(Context.WIFI_SERVICE) as WifiManager
        //通過放射獲取 getWifiApState()方法
        val method = manager.javaClass.getDeclaredMethod("getWifiApState")
        //調(diào)用getWifiApState() ，獲取返回值
        val state = method.invoke(manager) as Int
        //通過放射獲取 WIFI_AP的開啟狀態(tài)屬性
        val field: Field = manager.javaClass.getDeclaredField("WIFI_AP_STATE_ENABLED")
        //獲取屬性值
        val value = field.get(manager) as Int
        //判斷是否開啟
        return state == value
    } catch (e: NoSuchMethodException) {
        e.printStackTrace()
    } catch (e: IllegalAccessException) {
        e.printStackTrace()
    } catch (e: InvocationTargetException) {
        e.printStackTrace()
    } catch (e: NoSuchFieldException) {
        e.printStackTrace()
    }
    return false
}

fun Activity.startWifiActivity(){
    val intent = Intent(Settings.ACTION_WIRELESS_SETTINGS)
    this.startActivity(intent)
}

<manifest ...>
    <<!-- If your app targets Android 13 (API level 33)
          or higher, you must declare the NEARBY_WIFI_DEVICES permission. -->
    <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES"
                     <!-- If your app derives location information from
                          Wi-Fi APIs, don't include the "usesPermissionFlags"
                          attribute. -->
                     android:usesPermissionFlags="neverForLocation" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"
                     <!-- If any feature in your app relies on
                          precise location information, don't include the
                          "maxSdkVersion" attribute. -->
                     android:maxSdkVersion="32" />
    <application ...>
        ...
    </application>
</manifest>

public void startLocalOnlyHotspot (WifiManager.LocalOnlyHotspotCallback callback, 
                Handler handler)