ApkStudio is an open-source, cross platform Qt based IDE for reverse-engineering Android application packages. It is a freeware programming application.
Here are some screenshots to illustrate the features and user interface of this application:
And open APK source viewer with decompile and compile utilities. Screenshot of ApkStudio - 1721px · 1123pxApkStudio: User interface. Screenshot of ApkStudio - 1721px · 1123pxScreenshot of ApkStudio - Size: 1721px · 1123pxScreenshot of ApkStudio - Size: 1721px · 1123pxScreenshot of ApkStudio - Size: 1721px · 1123pxScreenshot of ApkStudio - Size: 1721px · 1123pxScreenshot of ApkStudio - Size: 1721px · 1123px