Editing *.apk: Is there an IDE for smali, with syntax highlighting and error checking, and to provide convenient disassembly / assembly, etc.?

Question

Java

Ideally, it would be like this:
1. File -> Open project -> apk
2. In the Package Explorer we get a class tree
3. We open the necessary classes in a multi-tab interface, edit
4. Save -> apk

Answer 1

Of the paid
Virtuous Ten Studio (VTS) is the ultimate solution for the modification of android applications.
virtuous-ten-studio.com
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smalidea smalidea is a smali language plugin for IntelliJ IDEA/Android Studio
https://github.com/JesusFreke/smali/wiki/smalidea