问题描述

android客户端接收服务器端发来的图片异常

threadid=11: thread exiting with uncaught exception (group=0x40a13300)
FATAL EXCEPTION: Thread-78
java.lang.NegativeArraySizeException: -2555936
at me.demo.transimage.MainActivity$1$1.run(MainActivity.java:59)
客户端代码
public class MainActivity extends Activity
{

private ImageView imageView;
private Bitmap bitmap;
private Button button;
public void onCreate(Bundle savedInstanceState)
{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

    imageView = (ImageView) findViewById(R.id.imageView1);
    button = (Button) findViewById(R.id.button1);
    button.setOnClickListener(new OnClickListener()
    {
        public void onClick(View v)
        {
                new Thread()
                {
                            public void run()
                            {
                                            Socket socket = null;
                                            byte[] data = null;
                                            try {
                                                socket = new Socket("10.0.2.2",1346);
                                                DataInputStream dis = new DataInputStream(socket.getInputStream());  

                                                if( dis.available()>=0)
                                                {
                                                    data = new byte[dis.readInt()];
                                                    bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
                                                    imageView.setImageBitmap(bitmap);
                                                }
                                            }
                                            catch (IOException e)
                                            {
                                                e.printStackTrace();
                                            }
                                            finally
                                            {
                                                try
                                                {
                                                    if(socket!=null)
                                                    socket.close();
                                                }
                                                catch (IOException e)
                                                {
                                                    e.printStackTrace();
                                                }
                                            }  

                            }                       

                }.start();
        }
    });
}

}

服务器端代码
public class TransImageServer
{

public static void main(String[] args)
{

try
{

ServerSocket server = new ServerSocket(1346);

System.out.println("服务器已启动,正在监听1346端口 ");

                Socket socket = server.accept();  

                DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
                FileInputStream fis = new FileInputStream("F:\project_test_image\avatar3_2.jpg");
                byte[] data = new byte[fis.available()];
                System.out.println("fis.available          " + (fis.available()));
                fis.read(data);
                dos.write(data);
                dos.flush();
                dos.close();
                fis.close();
                socket.close();
                server.close();  

    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
}

}

服务器端 System.out.println("fis.available " + (fis.available()));
输出为 服务器已启动,正在监听1346端口
fis.available 1031
但是客户端却报出有异常，java.lang.NegativeArraySizeException: -2555936

解决方案

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