Android 图片先gzip压缩然后在Base64转成字符串

图片用gzip解压，然后转为Base64

 public static String pngToString(File f1, File f2) throws Exception {//第一个File是需要压缩的图片路径，第二个File是图片压缩后生成的一个文件路径     //   InputStreamReader in = new InputStreamReader(new FileInputStream(f1), "UTF-8");        FileInputStream in = new FileInputStream(f1);        //使用GZIPOutputStream包装OutputStream流，使其具体压缩特性，最后会生成.gz压缩包        // 并且里面有一个文件        BufferedOutputStream out = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream(f2)));        System.out.println("开始写压缩文件...");        int c;        byte[] buf = new byte[1024];        while ((c = in.read(buf, 0, 1024)) != -1) {         /*　      　* 注，这里是压缩一个字符文件，前面是以字符流来读的，不能直接存入c，因为c已是Unicode　        * 码，这样会丢掉信息的(当然本身编码格式就不对)，所以这里要以UTF-8来解后再存入。　        *///out.write(String.valueOf((char) c).getBytes("UTF-8"));            out.write(buf, 0, c);        }        in.close();        out.close();//        System.out.println("开始读压缩文件...");//        //使用GZIPInputStream包装InputStream流，使其具有解压特性//        BufferedReader in2 = new BufferedReader(new InputStreamReader(//                new GZIPInputStream(new FileInputStream(f2)), "UTF-8"));//        String s;//        //读取压缩文件里的内容//        while ((s = in2.readLine()) != null) {//            System.out.println(s);//        }//        in2.close();        //下面转Base64        String base64 = null;        InputStream in1 = null;        try {            in1 = new FileInputStream(f2);            byte[] bytes = new byte[in1.available()];            int length = in1.read(bytes);            base64 = Base64.encodeToString(bytes, 0, length, Base64.DEFAULT);        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if (in != null) {                    in.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }        return base64;    }

onActivityResult获得的图片返回

 if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {            final Uri selectedImage = data.getData();            final String path = ImageUtils.getRealPathFromUri(getActivity(), selectedImage);            String[] filePathColumn = {MediaStore.Images.Media.DATA};            Log.e("Person", selectedImage + "     -----path" + path);   // content://media/external/images/media/789294            Glide.with(this).load(selectedImage).bitmapTransform(new CropCircleTransformation(getActivity())).into(ivPersonPic);            new Thread() {                @Override                public void run() {                    super.run();                    final String gzip = ContastUtils.IMAGE_PATH + "/" + System.currentTimeMillis() + ".gz";                    File filep = new File(path);                    final File fileg = new File(gzip);                    String base = null;                    try {                        //  TypeConverter.zip(filep, fileg);                        base = TypeConverter.pngToString(filep, fileg);//得到base64字符串                        final String finalBase = base;                        getActivity().runOnUiThread(new Runnable() {                            @Override                            public void run() {                                Log.e("--------", gzip);                            }                        });                    } catch (Exception e) {                        e.printStackTrace();                    }                }            }.start();        }