一直显示报错;这个为null？

Question

private void startMessage() {socket msocket = new socket(mPort);msocket.start();msocket.getHandler().obtainMessage(1).sendToTarget();}private class socket extends Thread {private ServerSocket serverSocket;private Socket _mSocket;private int dstPort;private boolean isloop = true;private Handler _mHandler;private OutputStream outp;private InputStream inp;public socket(int dstPort) {// TODO Auto-generated constructor stubthis.dstPort = dstPort;}public void run() {Looper.prepare();_mHandler = new Handler() {public void handleMessage(Message msg) {switch (msg.what) {case 1:try {serverSocket = new ServerSocket(dstPort);while (isloop) {_mSocket = serverSocket.accept();}} catch (IOException e) {}break;}};Log.d(tag, "???????????????????");Looper.loop();}public Handler getHandler() {return _mHandler;}一直报msocket.getHandler().obtainMessage(1).sendToTarget();这个为null

Answer 1

你是多线程。意思是2个线程都在跑。
你的支线程start了，但是你的主线程还在执行，立刻到了msocket.getHandler().obtainMessage(1).sendToTarget();
这个时候，你能保证你的支线程已经执行了run()【虽然他已经start了，但是start了，就代表他执行速度超过主线程，完成了run?】，完成了handler的初始化么？