背景蓝牙应用 - 穿线？ [英] Background Bluetooth App - Threading?

问题描述

我还是新Android开发，但我目前工作的需要蓝牙接口是在与蓝牙设备不断的交流项目。我一直在阅读了关于服务， IntentService ＆安培; AsynTask ，但我仍然感到困惑。我想我不应该使用的AsyncTask ，因为它是为处理一个很短的任务吗？如果我使用 IntentService ，我怎么产生多个线程来检查，如果蓝牙设备连接，发送和接收？

I'm still new to Android development but I am currently working on a project that requires the Bluetooth interface to be in constant communication with a Bluetooth-device. I've been reading up on Service, IntentService & AsynTask but I am still confused. I think I should not be using AsyncTask as it is meant for processing a very short task? If I use IntentService, how do I spawn multiple threads to check if the Bluetooth device is connected, sending and receiving?

我使用的是 BluetoothViewer 作为我的参考。在它 connectThread 是一个线程，当连接到蓝牙设备，随后将启动 connectedThread 。

I'm using the BluetoothViewer as my reference. In it connectThread is a thread which, when connected to the Bluetooth device, would then start the connectedThread.

感谢

肯

推荐答案

我使用ACTION_REQUEST_ENABLE意图startActivityForResult（）。这就导致调用：

I use an ACTION_REQUEST_ENABLE intent to startActivityForResult(). This then results in a call to:

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == imu.requestCode) {
            if (resultCode == RESULT_OK) {
            getPairedDevice();  // my function 
            initializeConnection(); // my function
        }
    }
}

initializeConnection（）创建一个新的线程，它初始化我输入插口，支持蓝牙输入处理创建另一个线程，并创建我的输出线。从这些功能片段包括：

initializeConnection() creates a new thread that initializes my input socket, creates yet another thread for Bluetooth input processing, and creates my output thread. Snippets from those functions include:

myServerSocket = dev.createInsecureRfcommSocketToServiceRecord(uuid); 
myBluetooth.cancelDiscovery();
myServerSocket.connect();
myBluetoothInputThread = new BluetoothInputThread(myServerSocket, handler);                    myBluetoothInputThread.setPriority(Thread.MAX_PRIORITY); 
myBluetoothInputThread.start();
myBluetoothSocketOutputStream = myServerSocket.getOutputStream();

BluetoothInputThread扩展Thread创建一个单独的进程监视的输入流。这个类通过Handler.sendMessage与其父类通信

BluetoothInputThread extends Thread to create a separate process for monitoring the input stream. This class communicates with its parent class via the Handler.sendMessage

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