通過 java android sockets 發送圖像

Question

我想通過 sockets 發送圖像，但我無法在 android 中完成，有人可以幫我嗎？

System.out.println("iniciooooo");

        //converting image to bytes with base64
        Bitmap b = BitmapFactory.decodeFile("/sdcard/ajeffer.jpg");
        ByteArrayOutputStream byte2= new ByteArrayOutputStream();
        b.compress(Bitmap.CompressFormat.JPEG,70,byte2);
        byte[] enbytes = byte2.toByteArray();
        String bb = Base64.encodeToString(enbytes,Base64.DEFAULT);
        System.out.println(Base64.encodeToString(enbytes,Base64.DEFAULT));
        data.writeUTF(bb);

        FileOutputStream file;

        //receiving the image in bytes to convert it into an image     
        DataInputStream dain = new DataInputStream(s.getInputStream());
        msg = dain.readUTF();
              
        File ff = new File("/sdcard/a2jeffer.jpg");
        byte[] deco = Base64.decode(dain.readUTF(),Base64.DEFAULT);
              
        Bitmap bit = BitmapFactory.decodeByteArray(deco,0,deco.length);
               
        file = new FileOutputStream(ff);
        bit.compress(Bitmap.CompressFormat.JPEG,70,file);
        //the image is not created

Answer 1

我意識到我的代碼不起作用，因為我不得不把這個android: requestLegacyExternalStorage =" true "放在清單中，我也看到你對 writeUTF () 的看法是正確的，因為為了發送圖像我必須大大降低質量但是它作品如果您對如何改進這一點有任何想法，請告訴我，非常感謝。

Answer 2

你是對的，這非常適合發送和接收任何文件。

發送文件

OutputStream outputStream = socket.getOutputStream();
        InputStream inputStream = new FileInputStream(file);
        byte[] datita = new byte[16*1024];
        int count;

        while((count = inputStream.read(datita))>0){
            outputStream.write(datita,0,count);
        }

        outputStream.close();
        inputStream.close();

接收文件

OutputStream outputStream = new FileOutputStream(file);
                        InputStream inputStream = s.getInputStream();
                        byte[] datita = new byte[16*1024];
                        int count;

                        while((count = inputStream.read(datita))>0){
                            outputStream.write(datita,0,count);
                        }
                        outputStream.close();
                        inputStream.close();