几个小时后，TextToSpeech停止工作

Question

I'm trying to make an app reading a string coming from a socket connection, but after a few hours the app stops talking (without exceptions). I'm sure the app is still running because the server sending the string continues to detect the response echo after sending it.

public class MainActivity extends AppCompatActivity {


TextToSpeech textToSpeech;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    textToSpeech = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
        @Override
        public void onInit(int status) {
            if(status != TextToSpeech.ERROR) {
                textToSpeech.setLanguage(Locale.ITALY);
            }
        }
    });

    Thread socketT = new Thread(new SocketThread());
    socketT.start();

}

@Override
public void onDestroy() {
    if (textToSpeech != null) {
        textToSpeech.stop();
        textToSpeech.shutdown();
    }
    super.onDestroy();
}


private class SocketThread extends Thread {

    static final int socketPort = 3333;

    @Override
    public void run() {
        try {
            ServerSocket serverSocket = new ServerSocket(socketPort);
            try {
                while(true) {
                    Socket clientSocket = serverSocket.accept();
                    try {
                        new ServerThread(clientSocket);
                    } catch(IOException e) {
                        clientSocket.close();
                    } }
            }
            catch (IOException e) {
            }
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    class ServerThread extends Thread {
        private int counter = 0;
        private int id = ++counter;
        private Socket socket;
        private BufferedReader in;
        private PrintWriter out;
        public ServerThread(Socket s) throws IOException {
            socket = s;
            in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            OutputStreamWriter osw = new OutputStreamWriter(socket.getOutputStream());
            out = new PrintWriter(new BufferedWriter(osw), true);
            start();
        }
        public void run() {
            try {
                while (true) {
                    String str = in.readLine();
                    textToSpeech.speak(str, TextToSpeech.QUEUE_FLUSH, null);
                }
            } catch (IOException e) {}
            try {
                socket.close();
            } catch(IOException e) {}
        }
    }


}



}

Answer 1

TextToSpeech instance will be available after connect to system service, not after invoke constructor.

So, your plan need to edit like this:

1. Call TextToSpeech constructor.

2. Check your TextToSpeech instance is finish to connect to system service through TextToSpeech.OnInitListener.onInit() .

3. Then, connect to your custom service.

Try this as below:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    textToSpeech = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
        @Override
        public void onInit(int status) {
            if(status != TextToSpeech.ERROR) {
                int res = textToSpeech.setLanguage(Locale.ITALY);
                if (res >= TextToSpeech.LANG_AVAILABLE) {
                    // TextToSpeech instance is available after connect to system service!
                    Thread socketT = new Thread(new SocketThread());
                    socketT.start();
                }
            }
        }
    });

    // At this time, your TextToSpeech instance may be not available yet.
    //Thread socketT = new Thread(new SocketThread());
    //socketT.start();
}