Worked on the androidx/androidx repository to address a critical issue in Trusted Web Activities related to file permission handling. Focused on improving compatibility for Android applications with restricted file access, the developer implemented a read-permission check and introduced conditional write access. This approach allowed read-only file operations when write permission was unavailable, aligning the solution with Android’s security model and reducing unnecessary write grants. The work involved Java and leveraged expertise in Android development, file handling, and permissions management. By refining permission logic, the update enhanced app stability and reliability for environments with constrained file access, addressing a key bug.