相关疑难解决方法(0)

我收到了Android 8用户的报告,我的应用(使用后端Feed)没有显示内容.经过调查,我发现在Android 8上发生以下异常:

08-29 12:03:11.246 11285-11285/ E/: [12:03:11.245, main]: Exception: IOException java.io.IOException: Cleartext HTTP traffic to * not permitted
at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:115)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:458)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.deiw.android.generic.tasks.AbstractHttpAsyncTask.doConnection(AbstractHttpAsyncTask.java:207)
at com.deiw.android.generic.tasks.AbstractHttpAsyncTask.extendedDoInBackground(AbstractHttpAsyncTask.java:102)
at com.deiw.android.generic.tasks.AbstractAsyncTask.doInBackground(AbstractAsyncTask.java:88)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)

(我删除了包名,URL和其他可能的标识符)

在Android 7及更低版本上一切正常,我没有设置android:usesCleartextTrafficManifest(并设置它true没有帮助,无论如何这是默认值),我也没有使用网络安全信息.如果我打电话NetworkSecurityPolicy.getInstance().isCleartextTrafficPermitted(),它会返回falseAndroid 8,true对于旧版本,使用相同的apk文件.我试图在关于Android O的Google信息上找到一些提及,但没有成功.

我已经定义了一个自定义的网络安全配置,在我的清单包括它作为推荐这里

RES/XML/network_security_config.xml:

  <?xml version="1.0" encoding="utf-8"?>
  <network-security-config>
  <domain-config cleartextTrafficPermitted="true">
    <domain includeSubdomains="true">127.0.0.1</domain>
    <domain includeSubdomains="true">localhost</domain>
  </domain-config>
  </network-security-config>

这是我的Android.manifest:

    <application android:icon="@drawable/icon" 
             android:allowBackup="false"
             android:usesCleartextTraffic="true"
             android:networkSecurityConfig="@xml/network_security_config"
             android:label="@string/app_name"
             android:theme="@style/AppTheme"
             android:persistent="true" >

尝试通过HTTP与127.0.0.1进行通信时,即使有这些更改,我也会在logcat中看到这一点:

08-09 10:50:34.395 30791  3607 D NetworkSecurityConfig: Using Network Security Config from resource network_security_config debugBuild: true
08-09 10:50:34.397 30791  3607 D NetworkSecurityConfig: Using Network Security Config from resource network_security_config debugBuild: true
08-09 10:50:34.401 30791  3607 W DownloadManager: [647] Stop requested with status HTTP_DATA_ERROR: Cleartext HTTP traffic to 127.0.0.1 not permitted
08-09 10:50:34.402 30791 …