⑴ android怎么在服务器和客户端之间传输图片
android客户端和java服务端之间可以用socket来传输图片。
服务器端代码：
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class Server02 {
public static void main(String[] args) {
try {
ServerSocket server = new ServerSocket(40000);
Socket socket = server.accept();
DataInputStream dos = new DataInputStream(socket.getInputStream());
int len = dos.available();
System.out.println("len = "+len);
byte[] data = new byte[len];
dos.read(data);
System.out.println("data = "+data);
dos.close();
socket.close();
server.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
客户端代码：
[java] view plain
imageView02 = (ImageView)findViewById(R.id.image02);
button02 = (Button)findViewById(R.id.Button02);
button02.setOnClickListener(new OnClickListener(){
public void onClick(View arg0) {
Socket socket;
try {
socket = new Socket("192.168.1.203",40000);
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.qt);
imageView02.setImageBitmap(bitmap);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
//读取图片到ByteArrayOutputStream
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] bytes = baos.toByteArray();
out.write(bytes);
System.out.println("bytes--->"+bytes);
out.close();
socket.close();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}