{"record":{"id":"f6eedc62036067c3","repo":"MuntashirAkon/AppManager","slug":"could-not-cache-apk-file","errorCode":null,"errorMessage":"Could not cache APK file","messagePattern":"Could not cache APK file","errorType":"exception","errorClass":"BackupException","httpStatus":null,"severity":"error","filePath":"app/src/main/java/io/github/muntashirakon/AppManager/backup/convert/SBConverter.java","lineNumber":280,"sourceCode":"                }\n            } catch (IOException e) {\n                throw new BackupException(\"Backup failed for \" + dataFile, e);\n            }\n        }\n    }\n\n    @SuppressLint(\"WrongConstant\")\n    @NonNull\n    private BackupMetadataV2 generateMetadata() throws BackupException {\n        BackupMetadataV2 metadataV2 = new BackupMetadataV2();\n        mCachedApk = FileUtils.getTempPath(mPackageName, \"base.apk\");\n        try (InputStream pis = getApkFile().openInputStream()) {\n            try (OutputStream fos = mCachedApk.openOutputStream()) {\n                IoUtils.copy(pis, fos);\n            }\n            mFilesToBeDeleted.add(getApkFile());\n        } catch (IOException e) {\n            throw new BackupException(\"Could not cache APK file\", e);\n        }\n        String filePath = Objects.requireNonNull(mCachedApk.getFilePath());\n        PackageInfo packageInfo = mPm.getPackageArchiveInfo(filePath, 0);\n        if (packageInfo == null) {\n            throw new BackupException(\"Could not fetch package info\");\n        }\n        mPackageInfo = packageInfo;\n        Objects.requireNonNull(mPackageInfo.applicationInfo);\n        mPackageInfo.applicationInfo.publicSourceDir = filePath;\n        mPackageInfo.applicationInfo.sourceDir = filePath;\n        ApplicationInfo applicationInfo = mPackageInfo.applicationInfo;\n\n        if (!mPackageInfo.packageName.equals(mPackageName)) {\n            throw new BackupException(\"Package name mismatch: Expected=\" + mPackageName + \", Actual=\" + mPackageInfo.packageName);\n        }\n\n        metadataV2.label = applicationInfo.loadLabel(mPm).toString();\n        metadataV2.packageName = mPackageName;","sourceCodeStart":262,"sourceCodeEnd":298,"githubUrl":"https://github.com/MuntashirAkon/AppManager/blob/0152f468fc9463ee02dc2ca83f6fe4989a2c4ca5/app/src/main/java/io/github/muntashirakon/AppManager/backup/convert/SBConverter.java#L262-L298","documentation":"Thrown by SBConverter.generateMetadata when copying the source base.apk into the temporary cache file (mCachedApk) throws IOException. The cached APK is required to parse package info, so conversion aborts.","triggerScenarios":"getApkFile() returns a path whose stream cannot be opened (missing file, unreadable location), or the temp output stream cannot be written (no cache space, cache dir not writable).","commonSituations":"Source backup folder on removed/unmounted external storage; the source archive lacks the APK because only data was backed up but APK conversion was still attempted; device cache full after many conversions.","solutions":["Confirm the source backup actually contains the APK (apkName in metadata) and the path is readable.","Free storage space in the app's temp/cache directory.","Re-copy the source backup to internal storage and retry.","Check the wrapped IOException cause for the exact failing path or permission."],"exampleFix":"// before: assume APK present\nconverter.convert();\n// after: verify APK file exists in source before converting\nFile apk = new File(sourceDir, metadata.apkName);\nif (!apk.isFile()) {\n    throw new IllegalStateException(\"APK missing in source: \" + apk);\n}\nconverter.convert();","handlingStrategy":"validation","validationCode":"File apk = new File(sourceDir, metadata.apkName);\nif (!apk.isFile() || !apk.canRead())\n    throw new IllegalStateException(\"source APK missing/unreadable: \" + apk);\nif (cacheDir.getUsableSpace() < apk.length())\n    throw new IllegalStateException(\"not enough cache space for \" + apk.length());","typeGuard":null,"tryCatchPattern":"try { converter.convert(); }\ncatch (BackupException e) {\n    if (e.getMessage().equals(\"Could not cache APK file\")) {\n        Log.e(TAG, \"APK cache copy failed\", e.getCause());\n        // check source path readability and cache space before retry\n    }\n}","preventionTips":["Confirm the source backup includes the APK before converting","Keep app cache clear of leftovers from failed conversions","Copy sources from removable media to internal storage first","Check IOException cause for the exact failing path"],"tags":["android","backup","cache","io"],"backgroundTag":"file-write-failed","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"}