Question

在react-native应用程序中，我使用react-native-device-info库来获取设备的MAC地址。

但我只能获得Android设备的mac地址。我找不到一个库来获取iOs设备的mac地址。

如何获取iOs设备的MAC地址？

Answer 1

在iOS 7或更高版本citing apple中无法执行此操作：

在iOS 7及更高版本中，如果您要求提供iOS设备的MAC地址，系统将返回值02：00：00：00：00：00。如果需要识别设备，请改用UIDevice的identifierForVendor属性。

相反，你应该使用＆＃34; identifierForVendor＆＃34;可以通过react-native-device-info接收：

import numpy as np
import cv2
import matplotlib.pyplot as plt
# This is font for labels
font = cv2.FONT_HERSHEY_SIMPLEX
# I load a picture of a page, gray and blur it
im = cv2.imread('test.png')
imgray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
image_blurred = cv2.GaussianBlur(imgray, (5, 5), 0)
image_blurred = cv2.dilate(image_blurred, None)
ret,thresh = cv2.threshold(image_blurred,0,255,0,cv2.THRESH_BINARY + cv2.THRESH_OTSU)
# I try to retrieve contours and hierarchy on the sample
_, contours, hierarchy =    cv2.findContours(thresh,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
hierarchy = hierarchy[0]
# I read every contours and retrieve the bounding box 
for i,component in enumerate(zip(contours, hierarchy)):
    cnt = component[0]
    currentHierarchy = component[1]
    precision = 0.01
    epsilon = precision*cv2.arcLength(cnt,True)
    approx = cv2.approxPolyDP(cnt,epsilon,True)
    # This is the best combination I found to isolate parents container
    # It gives me the best result (even if I'm not sure what I'm doing)
    # hierarchy[2/3] is "having child" / "having parent"
    # I thought  currentHierarchy[3] < 0 should be better
    # but it gives no result
    if currentHierarchy[2] > 0 and currentHierarchy[3] > 0:
        x,y,w,h = cv2.boundingRect(approx)
        cv2.rectangle(im,(x,y),(x+w,y+h),(0,255,0),2)
        cv2.putText(im,str(i),(x+2,y+2), font, 1,(0,255,0),2,cv2.LINE_AA)

plt.imshow(im)
plt.show()

react-native ios获取mac地址

1 个答案: