System.err: java.net.UnknownServiceException: CLEARTEXT communication to 192.168.43.172 not permitte

解决方式
在res目录下创建一个xml文件夹，并创建文件network_security_config.xml，内容如下：

<?xml version="1.0" encoding="utf-8"?>
<network-security-config xmlns:android="http://schemas.android.com/apk/res/android"><base-config cleartextTrafficPermitted="true" />
</network-security-config>

然后在AndroidManifest.xml的application结点中引用此xml文件

android:networkSecurityConfig="@xml/network_security_config"

完整如下：

<applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:networkSecurityConfig="@xml/network_security_config"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application>

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