network-security-config.xml在res里面XML文件夹
<network-security-config> <base-config cleartextTrafficPermitted="true"> <trust-anchors> <certificates src="system" /> </trust-anchors> </base-config> </network-security-config>
AndroidManifest.xml
<application .... android:networkSecurityConfig="@xml/network_security_config" >
如果还不行就改一下下面的targetSdkVersion
android { compileSdkVersion 28 defaultConfig { minSdkVersion 17 targetSdkVersion 27