is it safe to use WebView for android app?

Issue

I try to use HTML, CSS and JS instead of Java and XML, so I have to use WebView on Android Studio.

I just afraid that with simple Reverse Engineering anybody could access my web files and APIs...

Is it possible to do that? Is there any way to stop that?

Solution

Although safety of your application is at stake when using WebView, but there are ways to solve those problems as well such as:

You can keep all the URL's and Hardcoded text in String.xml file and call the URL's from there

Also the other way is to obfuscate the code using PROGUARD. This is primarily used to prevent reverse engineering.

Refer https://developer.android.com/studio/build/shrink-code for better understanding.

Also, To obfuscate code in Android studio just go to your build.gradle file 
in your Android Studio project:

Change the minifyEnabled property from false to true

That's the basic obfuscation.

Answered By - user10268168