java.lang.NegativeArraySizeException

兩台android設備發送圖片。

發送端：

Socket socket = null;
        try {
            socket = new Socket(ip, 8888);
            byte[] bytes = ScreenCapUtil.ScreenCapToByte();

            DataOutputStream out = new DataOutputStream(socket.getOutputStream());
            out.writeInt(bytes.length);//發送的時候忘記添加了文件的大小。

out.write(bytes); out.close(); socket.close(); } catch (IOException e) { e.printStackTrace(); }

 

接受端：

try {
                        
                        ServerSocket server = new ServerSocket(8888);
                        Socket socket = server.accept();
                        
                        DataInputStream dos = new DataInputStream(socket.getInputStream());
                        int size = dos.readInt();//因為發送時忘記添加文件大小。所以size的為負數

System.out.println("len = " + size); byte[] data = new byte[size];//下標為負數所以出錯了。

int len = 0; while (len < size) { len += dos.read(data, len, size - len); } 
bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
handler.sendEmptyMessage(0); 

// System.out.println("data = " + data); 

 dos.close(); socket.close(); server.close(); 
} catch (IOException e)
 { e.printStackTrace(); }