DownloadFileSendThread.java
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package com.sunvote.xpadcomm;
import android.os.Handler;
import android.os.HandlerThread;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import com.sunvote.util.LogUtil;
/**
* Created by Elvis on 2017/12/25 15:38
* Email:Eluis@psunsky.com
* 版权所有：长沙中天电子设计开发有限公司
* Description: 人大通用版XPadAppRD
* 下载文件发送数据请求线程
*/
public class DownloadFileSendThread extends HandlerThread {
private static String TAG = "DownloadFileSendThread" ;
private DatagramSocket udpSocket ;
private DatagramPacket packet;
private Handler handler;
public DownloadFileSendThread() {
super(TAG);
start();
handler = new Handler(getLooper());
}
public boolean sendData(final byte flag,final byte type,final int index,final String ip,final int port){
handler.post(new Runnable() {
@Override
public void run() {
byte[] buffer = new byte[10];
buffer[0] = (byte) 0xFE;
buffer[1] = (byte) 0xAA;
buffer[2] = flag;
buffer[3] = type;//
buffer[4] = (byte) ((index >> 8) & 0xff);
buffer[5] = (byte) (index & 0xff);
InetAddress servInetAddress;
try {
servInetAddress = InetAddress.getByName(ip);
} catch (Exception e) {
LogUtil.e(TAG, e);
return ;
}
LogUtil.i(TAG,"sendNextData",buffer);
packet = new DatagramPacket(buffer, buffer.length, servInetAddress, port);
handler.removeCallbacks(task);
handler.post(task);
}
});
return true;
}
private Runnable task = new Runnable() {
@Override
public void run() {
if (handler != null) {
handler.removeCallbacks(this);
if (udpSocket == null) {
try {
udpSocket = new DatagramSocket();
} catch (SocketException e) {
LogUtil.e(TAG, e);
}
}
if (udpSocket != null && packet != null) {
try {
LogUtil.i(TAG,"send to server",packet.getData());
udpSocket.send(packet);
} catch (IOException e) {
LogUtil.e(TAG, e);
udpSocket.close();
udpSocket = null;
}
}
}
if(handler != null){
handler.postDelayed(this, 1000);
}
}
};
public void close(){
handler.removeCallbacks(task);
if(udpSocket != null){
udpSocket.close();
udpSocket = null;
}
handler = null;
packet = null;
quit();
}
}