


How to Unzip Multiple Files Programmatically in Android with Enhanced Performance?
Oct 30, 2024 am 06:42 AMUnzipping Files Programmatically in Android
Unlocking the contents of ZIP archives is a fundamental task in many Android applications. This question seeks a solution to unzip multiple files from a specified ZIP archive, maintaining their original formats.
Embracing a Refined Approach
The solution provided optimizes a previous version, resulting in enhanced performance noticeable to the user. Here's the optimized code snippet:
<code class="java">private boolean unpackZip(String path, String zipname) { InputStream is; ZipInputStream zis; try { String filename; is = new FileInputStream(path + zipname); zis = new ZipInputStream(new BufferedInputStream(is)); ZipEntry ze; byte[] buffer = new byte[1024]; int count; while ((ze = zis.getNextEntry()) != null) { filename = ze.getName(); // Handle directories if (ze.isDirectory()) { File fmd = new File(path + filename); fmd.mkdirs(); continue; } FileOutputStream fout = new FileOutputStream(path + filename); while ((count = zis.read(buffer)) != -1) { fout.write(buffer, 0, count); } fout.close(); zis.closeEntry(); } zis.close(); } catch (IOException e) { e.printStackTrace(); return false; } return true; }</code>
Breakdown of the Code
This optimized code performs the following steps:
- Initialization: Establishing input streams for reading the ZIP archive.
- Entry Traversal: Iterating through ZIP entries.
- Directory Handling: Creating directories if necessary.
- File Extraction: Writing the file contents using a buffer.
- Closing Streams: Properly closing input and output streams.
This optimized code streamlines the unzipping process, providing efficient file extraction with perceptible speed improvements.
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