How to access backup file.

[jinnko]

I'm on Android 16 using the latest LaunchTime. I want to use backup/restore to migrate to a new device.

After taking a new backup, I can show the external backup options and choose to "Copy selected backup to filesystem". All I see is a transient message stating "Boo".

I've checked the app permissions and the only permission I can grant is for notifications. There's no file access permissions I can grant.

Using adb I've tried find /sdcard -name '2025*.zip' for the filename presented on the Backup and Restore view - but nothing is found.

[m3thm4th]

@quaap
This is an issue with storage access. The app never asks for storage access, I gave it manually in "Special app access -> All files access", nonetheless it doesn't work. The app can't access storage.

[shula]

I can't install here an android dev env. But I asked AI anyway, which said:

if you want to save backups in Android/data/com.quaap.launchtime/files/, you do not need any permissions. However, because this folder isn't automatically generated by Android anymore, you must initialize it in code before trying to write to it.

Replace your file saving logic with Context.getExternalFilesDir(null).

Java Implementation:

import java.io.File;

public void createAppSpecificBackupFolder(Context context) {
    // This safely creates the Android/data/com.quaap.launchtime/files/backups directory
    // NO permissions are required in the AndroidManifest.xml for this!
    File backupDir = new File(context.getExternalFilesDir(null), "backups");
    
    if (!backupDir.exists()) {
        boolean created = backupDir.mkdirs();
        if (created) {
            // Folder is now visible in the filesystem
            // You can safely read/write your backup files here
            File myBackup = new File(backupDir, "settings_backup.json");
        }
    }
}