从Android 9（API级别28）开始，默认情况下禁用明文支持。

 在生产环境中强制使用https，但在调试模式下允许使用明文的方法 它仅在api 23+上使用

在build.gradle中：

// Put this in your buildtypes debug section:
manifestPlaceholders = [usesCleartextTraffic:"true"]

// Put this in your buildtypes release section
manifestPlaceholders = [usesCleartextTraffic:"false"]

在AndroidManifest.xml中的application标签中

android:usesCleartextTraffic="${usesCleartextTraffic}"

 android:usesCleartextTraffic="true"

其它方法“

删除了这一行

android:networkSecurityConfig="@xml/network_security_config" 

application 添加

android:usesCleartextTraffic="true"

改造配置类OKHttp创建时添加了一个连接规范

 .connectionSpecs(CollectionsKt.listOf(ConnectionSpec.MODERN_TLS, ConnectionSpec.CLEARTEXT))

OkHttpClient okHttpClient = new OkHttpClient.Builder()
        .readTimeout(10, TimeUnit.SECONDS)
        .connectTimeout(10, TimeUnit.SECONDS)
        .cache(null)
        .connectionSpecs(CollectionsKt.listOf(ConnectionSpec.MODERN_TLS, ConnectionSpec.CLEARTEXT))
        .addInterceptor(new NetworkInterceptor(context))
        .addInterceptor(createLoggingInterceptor())
        .addInterceptor(createSessionExpiryInterceptor())
        .addInterceptor(createContextHeaderInterceptor())
        .build();

<network-security-config>
    <base-config cleartextTrafficPermitted="true">
        <trust-anchors>
            <certificates src="system" />
            <certificates src="user" />
        </trust-anchors>
    </base-config>
    <domain-config cleartextTrafficPermitted="true">
        <domain includeSubdomains="true">api.endv.cn</domain>
        <domain includeSubdomains="true">im.endv.cn</domain>
        <domain includeSubdomains="true">pay.endv.cn</domain>
        <domain includeSubdomains="true">endv.cn</domain>
    </domain-config>
</network-security-config>