在保存到 zip 文件之前压缩图像

Question

我有如下代码来创建包含图片的 zip 文件

public void zip(String[] files, String zipFile) {

    final String[] _files = files;
    final String _zipFile = zipFile;

    Thread thread = new Thread(new Runnable() {
        @Override
        public void run() {
            try {

                BufferedInputStream origin = null;
                FileOutputStream dest = new FileOutputStream(_zipFile);

                ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));

                byte data[] = new byte[BUFFER];

                for (int i = 0; i < _files.length; i++) {
                    Log.d("add:", _files[i]);
                    Log.v("Compress", "Adding: " + _files[i]);
                    FileInputStream fi = new FileInputStream(_files[i]);
                    origin = new BufferedInputStream(fi, BUFFER);
                    ZipEntry entry = new ZipEntry(_files[i].substring(_files[i].lastIndexOf("/") + 1));
                    out.putNextEntry(entry);
                    int count;
                    while ((count = origin.read(data, 0, BUFFER)) != -1) {
                        out.write(data, 0, count);
                    }
                    origin.close();
                }

                out.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });

    thread.start();
}

我调用方法 zip(stockArr,"/storage/sdcard0/MyAnnouncementImages.zip")，图像没有被压缩，那么如果每张图片重 3Mb，那么 zip 文件会很重，那么我需要压缩将每个图像放入 zip 文件之前，有帮助吗？

Answer 1

您尝试使用位图吗？

Bitmap bitmap = Bitmap.createScaledBitmap(capturedImage, width, height, true);

指定位图的宽度和高度，所以...高度和宽度可以根据设备的屏幕dpi设置。