ref：
https://blog.csdn.net/gengkui9897/article/details/82863966
https://stackoverflow.com/questions/45940861/android-8-cleartext-http-traffic-not-permitted
在AndroidManifest.xml配置文件的<application>标签中插入:
android:usesCleartextTraffic="true"
ref：
https://blog.csdn.net/gengkui9897/article/details/82863966
https://stackoverflow.com/questions/45940861/android-8-cleartext-http-traffic-not-permitted
在AndroidManifest.xml配置文件的<application>标签中插入:
android:usesCleartextTraffic="true"