图片压缩算法，保证图片不失真

来源：互联网发布：微交易系统源码破解版编辑：程序博客网时间：2024/04/28 18:49

在各种项目中，都难免遇到图片的上传和下载，然而，图片的上传，需要压缩后再上传才是明智之举；然后，压缩图片可能会导致图片的失真等等问题，在这里，我将在工作中使用的比较好的图片压缩方法，分享给大家。

 public static Bitmap revitionImage(String path) throws IOException {

        BufferedInputStream in = new BufferedInputStream(new FileInputStream(                new File(path)));

        BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        BitmapFactory.decodeStream(in, null, options);        int height = options.outHeight;        int width = options.outWidth;        int inSampleSize = 1;

        int reqHeight = 800;        int reqWidth = 480;

        if (height > reqHeight || width > reqHeight) {            final int heightRatio = Math.round((float) height / (float) reqHeight);            final int widthRatio = Math.round((float) width / (float) reqWidth);            inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;        }        options.inJustDecodeBounds = false;        options.inSampleSize = inSampleSize;        Bitmap bitmap = BitmapFactory.decodeFile(path, options);

<span style="white-space: pre;"></span> ByteArrayOutputStream baos = new ByteArrayOutputStream();

        bitmap.compress(Bitmap.CompressFormat.JPEG, 80, baos);        byte[] b = baos.toByteArray();        Bitmap result = BitmapFactory.decodeByteArray(b, 0, b.length);        if (baos != null)            baos.close();        if (in != null)            in.close();        return result;    }

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