MuntashirAkon/AppManager · error · UnsupportedOperationException

Invalid key ${key}

Error message

Invalid key ${key}

What it means

BackupOption.test() evaluates a PackageInfo against the configured key; if key is not one of the recognized cases (has_backup, backups, with_flags, etc.) the default branch throws UnsupportedOperationException("Invalid key " + key). It signals that the option was constructed with a key it cannot evaluate.

Source

Thrown at app/src/main/java/io/github/muntashirakon/AppManager/filters/options/BackupOption.java:162

                    if ((backup.flags & intValue) == intValue) {
                        matchedBackups.add(backup);
                    }
                }
                return result.setMatched(!matchedBackups.isEmpty())
                        .setMatchedBackups(matchedBackups);
            }
            case "without_flags": {
                List<Backup> matchedBackups = new ArrayList<>();
                for (Backup backup : backups) {
                    if ((backup.flags & intValue) != intValue) {
                        matchedBackups.add(backup);
                    }
                }
                return result.setMatched(!matchedBackups.isEmpty())
                        .setMatchedBackups(matchedBackups);
            }
            default:
                throw new UnsupportedOperationException("Invalid key " + key);
        }
    }


    @NonNull
    @Override
    public CharSequence toLocalizedString(@NonNull Context context) {
        SpannableStringBuilder sb = new SpannableStringBuilder();
        switch (key) {
            case KEY_ALL:
                return "Apps with or without backups";
            case "backups":
                return "Only the apps with backups";
            case "no_backups":
                return "only the apps without backups";
            case "latest_backup":
                return "Only the apps having the latest backups";
            case "outdated_backup":

View on GitHub (pinned to 0152f468fc)

Solutions

1. Use only keys BackupOption's switch supports (e.g. "has_backup", "no_backup", "backup_allowed", "backups", "with_flags", "without_flags")
2. Add the missing case to test() if a new key was introduced
3. Clear or migrate saved filters that carry stale keys
4. Validate user-chosen keys against the supported list before constructing the option

Example fix

// before
FilterOption opt = new BackupOption("backup", "backup_exists"); // unknown key
boolean m = opt.test(packageInfo).isMatched(); // throws
// after
FilterOption opt = new BackupOption("backup", "has_backup"); // supported key
boolean m = opt.test(packageInfo).isMatched();

Set<String> VALID = Set.of("has_backup","no_backup","backup_allowed","backups","with_flags","without_flags"); if (!VALID.contains(key)) throw new IllegalArgumentException("Unsupported BackupOption key: " + key);

boolean isValidBackupKey(String key) { return key != null && Set.of("has_backup","no_backup","backup_allowed","backups","with_flags","without_flags").contains(key); }

try { boolean matched = option.test(packageInfo).isMatched(); } catch (UnsupportedOperationException e) { matched = false; /* skip unrecognizable filter */ }

When it happens

Trigger: Constructing BackupOption with an unrecognized key string and then calling test() during app-list filtering; saved filter configurations containing keys from a different AppManager version; typos in data-driven filter setup.

Common situations: After upgrading AppManager, old stored filters reference renamed keys; developer adds a new key to another option class and reuses it here; programmatic filter construction with hardcoded wrong key strings.

Understand the failure class

Background: UnsupportedOperationException and "is not supported" errors: when a library deliberately refuses a call — this error's family across 30 libraries.

Related errors

• Invalid key ${key}
• Invalid key ${key}
• Couldn't delete old file <inputFile>
• Could not delete <mBackupPath>
• Could not move <mTempBackupPath> to <mBackupPath>

AI-assisted analysis of MuntashirAkon/AppManager@0152f468fc (2026-09-12). Data as JSON: /api/errors/205938566d601d36. Report an issue: GitHub.