【Android】AsyncTask cant be executed twice

問題：
Cannot execute task: the task has already been executed (a task can be executed only once)
http://stackoverflow.com/questions/19345118/async-task-cant-be-executed-twice

解答：

As the exception itself explains, you cannot execute an AsyncTask more than once, unless you create a new instance of it and call .execute.

For example:

async = new AsyncTask();
async.execute();

*in order to execute more than once, you need to re-create the instance (using new) the number of times you want to execute it.

但有人說沒作用

問題：
Android restart AsyncTask
http://stackoverflow.com/questions/11586704/android-restart-asynctask

解答：
改成使用Thread 和 HandleMessage實作

Thank you for all your comments they helped a lot. I decided to do away with the AsyncTask. I ended using a normal runnable Thread and using Handlers to post messages back to the UI thread. here is the code:

        // Start thread here only for IsSocketConnected
        new Thread(new Runnable() {

            public void run() {

                //Add your code here..
                IsSocketConnected();

            }
        }).start();


// handler that deals with updating UI
public Handler myUIHandler = new Handler()
{
    @Override
    public void handleMessage(Message msg)
    {
        if (msg.what == Bluetooth.STATE_CONNECTED)
        {
            //Update UI here...
            Log.d(TAG, "Connected");




            // Discover available devices settings and create buttons
            CreateButtons(btnList);

        } else if(msg.what == Bluetooth.STATE_NONE) {

            Log.d(TAG, "NOT Connected");
        }

}

// in the IsSocketConnected() I call this 
Message theMessage = myUIHandler.obtainMessage(Bluetooth.STATE_CONNECTED);
myUIHandler.sendMessage(theMessage);//Sends the message to the UI handler.

This is working so far. Thank you again. Hope this helps someone