从安卓工作室API 28连接到解析服务器的i/o失败

Question

MyAndroidManifest.xml文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.parse.starter"
android:targetSandboxVersion="1">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:name=".StarterApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:networkSecurityConfig="@xml/network_security_config"
android:supportsRtl="true"
android:usesCleartextTraffic="true">
<activity android:name=".UserListActivity"></activity>
<activity
android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

我的network_security_config文件具有

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

我正在使用compilerSdkVersion 28、minSdkVersion 26、targetSdkVersion 28、gradle build 4.0.1

仍然无法连接到解析服务器。我甚至只尝试了http和https。我不知道该怎么办。每当我试图连接到解析服务器时，它都会显示i/o failure的Toast。请尽快提供帮助。

Answer 1

这样更改xml/security_network_config，因为它对我有效

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<base-config cleartextTrafficPermitted="true">
<trust-anchors>
<certificates src="system" />
</trust-anchors>
</base-config>
</network-security-config>