I believe you are simply facing Keystore bugs. See this article for example: Android Security: The Forgetful Keystore. There are also numberous bug reports in Android tracker related to keystore, like AndroidKeyStore deleted after changing screen lock type.
If you use http instead of https in your url, add this line to AndroidManifest.xml in the <application> tag. android:usesCleartextTraffic=”true” This should solve your problem.
AAPT allows you to view, create, and update ZIP-compatible archives (ZIP, JAR, and APK). It can also compile resources into binary assets. It is the base builder for Android applications. Of course you can ship .so files from an application, but if you want to use it, you will need reverse engineering plugins and these … Read more
To properly handle SSL certificate validation, change your code to invoke SslErrorHandler.proceed() whenever the certificate presented by the server meets your expectations, and invoke SslErrorHandler.cancel() otherwise. As email said, onReceivedSslError should handle user is going to a page with invalid cert, such like a notify dialog. You should not proceed it directly. For example, I … Read more