startActivity(intent); 方法无法实现activity的跳转

Question

public class ClientThread extends Thread

{

private Socket socket = null;

private  ObjectOutputStream oos = null;

private  ObjectInputStream ois = null;

private Context context = null;

private TransEntity trans = null;

public ClientThread()

{

this.socket = SysCtlVar.socket;

   this.context = SysCtlVar.context;

   this.trans = SysCtlVar.trans;

}

public void run()

{

if(SysCtlVar.FLAGS_ConnectionTimeOut==true)

{

SysCtlVar.client.startServer();

this.socket = SysCtlVar.socket;

}

initStream();

try 

{

SysCtlVar.FlAGS_LoginSuccess = setLogin(context,trans);

} 

catch (ClassNotFoundException e) 

{

e.printStackTrace();

}

if(SysCtlVar.FlAGS_LoginSuccess==true)

{

synchronized(this)

{

try 

{

this.wait();

new Jump2MainActivityThread().start();

               

} 

catch (InterruptedException e)

{

e.printStackTrace();

}

}

}

 

   

   

while(SysCtlVar.FlAGS_LoginSuccess)

{

}

}

public void initStream()

{

try 

{

oos = new ObjectOutputStream(socket.getOutputStream());

ois = new ObjectInputStream(socket.getInputStream());

SysCtlVar.oos = oos; 

SysCtlVar.ois = ois;

} 

catch (IOException e) 

{

e.printStackTrace();

}

}

@SuppressWarnings("static-access")

public boolean setLogin(Context context,TransEntity trans) throws ClassNotFoundException

{

boolean b=false;

try 

{

//oos = new ObjectOutputStream(socket.getOutputStream());

System.out.println("--------Client----oos!=null   :--------------"+(oos!=null));

//trans.setRequestTags(TransInfoTags.REQUEST_BUDDY_LIST); //发送一个要求返回在线好友的请求的Message

oos.writeObject(trans);

//ois = new ObjectInputStream(socket.getInputStream());

System.out.println("--------Client----ois!=null   :--------------"+(ois!=null));

TransEntity intrans = (TransEntity)ois.readObject();

   

if(TransInfoTags.LOGIN_SUCCESS.equals(intrans.getResponseTags())&&(!b))

{

System.out.println("--------------Client   LOGIN_SUCCESS -------------");

MainActivity.list = intrans.getList();

TransEntity outrans = new TransEntity();

outrans.setUserOperaType(SysCtlVar.NLSTR);//USER is online 避免同一用户重复登陆系统；

outrans.setResponseTags(SysCtlVar.NLSTR);

outrans.setRequestTags(UserOperaType.GET_AVATARS);

b = true;

oos = new ObjectOutputStream(socket.getOutputStream());

oos.writeObject(outrans);

oos.flush();

System.out.println("-----------------trans.getRequestTags():--------------"+(outrans.getRequestTags()));

}

else if(TransInfoTags.LOGIN_FAIL.equals(intrans.getResponseTags()))

{

b = false;

}

 

}

catch (IOException e)

{

e.printStackTrace();

} 

catch (ClassNotFoundException e)

{

e.printStackTrace();

}

return b;

}

}

class Jump2MainActivityThread extends Thread

{

private static Context firstActivity = null;

public Jump2MainActivityThread()

{

firstActivity = new FirstActivity();

}

public void run()

{

synchronized(SysCtlVar.clientThread)

{

Intent intent = new Intent();

intent.setClass(firstActivity,MainActivity.class);

SysCtlVar.context.startActivity(intent);

((Activity) firstActivity).finish();

SysCtlVar.clientThread.notify();  

}

}

}

Answer 1

把context传到子线程是不行的，必须在主线程才能startActivity。
线程同步建议用message。可以在主线程new一个handler，将handler传到子线程，子线程结束后postmessage到主线程handler里startActivity.