バグ #466
みぞ @mizo0203 さんがほぼ6年前に更新
発生端末: Emulator Pixel_2_API_28
```
2018-11-29 08:29:06.433 5600-5640/com.mizo0203.natureremoapisample W/System.err: java.io.IOException: Cleartext HTTP traffic to 192.168.1.23 not permitted
2018-11-29 08:29:06.433 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:115)
2018-11-29 08:29:06.434 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:458)
2018-11-29 08:29:06.434 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
2018-11-29 08:29:06.434 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:258)
2018-11-29 08:29:06.434 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.mizo0203.natureremoapisample.util.HttpUtils.post(HttpUtils.java:49)
2018-11-29 08:29:06.435 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.mizo0203.natureremoapisample.data.source.NatureRemoLocalApiClient.postMessages(NatureRemoLocalApiClient.java:102)
2018-11-29 08:29:06.435 5600-5640/com.mizo0203.natureremoapisample W/System.err: at com.mizo0203.natureremoapisample.data.source.NatureRemoRepository$6.run(NatureRemoRepository.java:178)
2018-11-29 08:29:06.435 5600-5640/com.mizo0203.natureremoapisample W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
2018-11-29 08:29:06.435 5600-5640/com.mizo0203.natureremoapisample W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
2018-11-29 08:29:06.436 5600-5640/com.mizo0203.natureremoapisample W/System.err: at java.lang.Thread.run(Thread.java:764)
```
Nature API v1.0.0 でも発生するかは未確認
Android 8.1 Oreo (API level 27) で発生しないことは実機 (SHARP S1) と Emulator で確認済み
下記が必要
`android:usesCleartextTraffic="true"`
https://stackoverflow.com/questions/45940861/android-8-cleartext-http-traffic-not-permitted
https://developer.android.com/training/articles/security-config#CleartextTrafficPermitted