Android 反射

fun getPrivateValue(device: BluetoothDevice?):Int{
    try {
        val activityManagerClass =
            Class.forName("android.bluetooth.BluetoothDevice")//类名
        val getCurrentUserMethod =
            activityManagerClass.getMethod("getAdapterIndex")//方法
        return getCurrentUserMethod.invoke(device) as Int
    }catch (e: Exception){
        LogUtils.d(TAG,"error")
    }
    return -1
}