{"record":{"id":"a002b5cfe1494d3b","repo":"MuntashirAkon/AppManager","slug":"failed-to-extract-the-apk-file-s","errorCode":null,"errorMessage":"Failed to extract the apk file(s).","messagePattern":"Failed to extract the apk file\\(s\\)\\.","errorType":"exception","errorClass":"BackupException","httpStatus":null,"severity":"error","filePath":"app/src/main/java/io/github/muntashirakon/AppManager/backup/RestoreOp.java","lineNumber":361,"sourceCode":"                allApkNames[0] = mBackupMetadata.apkName;\n                for (int i = 1; i < allApkNames.length; ++i) {\n                    allApkNames[i] = mBackupMetadata.splitConfigs[i - 1];\n                    allApks[i] = packageStagingDirectory.createNewFile(allApkNames[i], null);\n                }\n            } catch (IOException e) {\n                throw new BackupException(\"Could not create staging files\", e);\n            }\n            // Decrypt sources\n            try {\n                backupSourceFiles = mBackupItem.decrypt(backupSourceFiles);\n            } catch (IOException e) {\n                throw new BackupException(\"Failed to decrypt \" + Arrays.toString(backupSourceFiles), e);\n            }\n            // Extract apk files to the package staging directory\n            try {\n                TarUtils.extract(mBackupInfo.tarType, backupSourceFiles, packageStagingDirectory, allApkNames, null, null);\n            } catch (Throwable th) {\n                throw new BackupException(\"Failed to extract the apk file(s).\", th);\n            }\n            // A normal update will do it now\n            InstallerOptions options = InstallerOptions.getDefault();\n            options.setInstallerName(mBackupMetadata.installer);\n            options.setUserId(mUserId);\n            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {\n                options.setInstallScenario(PackageManager.INSTALL_SCENARIO_BULK);\n            }\n            AtomicReference<String> status = new AtomicReference<>();\n            PackageInstallerCompat packageInstaller = PackageInstallerCompat.getNewInstance();\n            packageInstaller.setOnInstallListener(new PackageInstallerCompat.OnInstallListener() {\n                @Override\n                public void onStartInstall(int sessionId, String packageName) {\n                }\n\n                @Override\n                public void onFinishedInstall(int sessionId, String packageName, int result, @Nullable String blockingPackage, @Nullable String statusMessage) {\n                    status.set(statusMessage);","sourceCodeStart":343,"sourceCodeEnd":379,"githubUrl":"https://github.com/MuntashirAkon/AppManager/blob/0152f468fc9463ee02dc2ca83f6fe4989a2c4ca5/app/src/main/java/io/github/muntashirakon/AppManager/backup/RestoreOp.java#L343-L379","documentation":"Once decrypted, restoreApkFiles extracts the APK files from the backup tar archive(s) into the package staging directory using TarUtils.extract. This error means extraction threw any Throwable (corrupt archive, unsupported compression, I/O failure). The broad catch ensures any tar-related failure aborts the restore with a clear message.","triggerScenarios":"TarUtils.extract(mBackupInfo.tarType, backupSourceFiles, packageStagingDirectory, allApkNames, ...) fails: wrong tarType, corrupted/truncated tar member, unsupported compression, or write failure into the staging dir.","commonSituations":"Backups moved between devices and partially copied; tarType metadata mismatches the actual archive format; extraction to /data/local/tmp-like staging fails due to space or SELinux restrictions.","solutions":["Verify mBackupInfo.tarType matches the actual archive format (zstd/gzip/plain).","Re-create or re-transfer the backup — a truncated tar is the most common cause.","Free storage and retry the restore.","Skip no-longer-supported compression by re-packing the backup with a supported format."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"if (!mBackupInfo.tarType.canExtract(backupSourceFiles)) throw new IllegalStateException(\"Unsupported tar type: \" + mBackupInfo.tarType);","typeGuard":null,"tryCatchPattern":"try { TarUtils.extract(tarType, sources, dest, names, null, null); } catch (Throwable th) { throw new BackupException(\"Failed to extract the apk file(s).\", th); } // log th fully to distinguish corruption vs I/O","preventionTips":["Confirm tarType metadata matches the archive format","Verify archive sizes after transfer against the source","Ensure enough free space for extracted output","Keep AppManager versions consistent between backup and restore"],"tags":["android","tar","backup-restore"],"backgroundTag":"invalid-argument-value","analyzedSha":"0152f468fc9463ee02dc2ca83f6fe4989a2c4ca5","analyzedAt":"2026-09-12T14:03:37.243Z","contentChangedAt":"2026-09-12T14:03:37.243Z","schemaVersion":2},"datasetVersion":"2026-09-14T16:17:12.679Z"}