Question

我正在开发一个通过蓝牙与Arduino通信的应用程序，但是，我不知道为什么我无法取消负责蓝牙输入流的线程。

public class mainclass extends Activity{
 BluetoothSocket scSocket = AnotherClass.btSocket;
 SendReceiveBytes  sendReceiveBT;
 Thread th;

 protected void onCreate(Bundle savedInstanceState) {
         .
         .
         sendReceiveBT = new SendReceiveBytes(scSocket);
         th = new Thread(sendReceiveBT);
         th.start();
         .
         .
         sendReceiveBT.stop=true;
         Log.e(TAG, "Request sent");
         .
         .
       }
 }

public class SendReceiveBytes implements Runnable {
public static final int MESSAGE_WRITE = 1;
public static final int MESSAGE_READ = 2;
String readMessage="";

 private  BluetoothSocket btSocket;
 private InputStream btInputStream = null;
 private OutputStream btOutputStream = null;
 public boolean stop=false;
 public boolean stopped=false;
 String TAG = "SendReceiveBytes";

 public SendReceiveBytes(BluetoothSocket socket) {
 btSocket = socket;
 try {
 btInputStream = btSocket.getInputStream();
 btOutputStream = btSocket.getOutputStream();
 } 
 catch (IOException streamError) { 
 Log.e(TAG, "Error when getting input or output Stream");
 }
 }

 public void run() {
 byte[] buffer = new byte[1024]; // buffer store for the stream
 int bytes; // bytes returned from read()

 // Keep listening to the InputStream until an exception occurs
 while (!stop) {
 try {
 // Read from the InputStream
 bytes = btInputStream.read(buffer);
 // Send the obtained bytes to the UI activity
 byte[] readBuf = (byte[]) buffer;
 // construct a string from the valid bytes in the buffer
 readMessage = new String(readBuf, 0, bytes);
 } 
 catch (IOException e) {
 Log.e(TAG, "Error reading from btInputStream");
 break;
 }
 }
 Log.e(TAG, "Quit");
 stopped=true;
 }

}

在LogCat中，带有＆＃34;请求发送的标签＆＃34;显示这意味着我已经设置了＆＃34;停止＆＃34;然而，标签为＆＃34; Quit＆＃34;永远不会出现。

Answer 1

您可以尝试覆盖stop（） - 方法，该方法将stop-flag设置为true。还要确保关闭你的溪流。

我无法在Android中取消我的主题

1 个答案: