将消息或数据从 Looper 传递到主线程

Question

我的应用程序使用一个广播接收器，它产生两个线程，其中包含 Loopers ReceiverAccLooper 和 GetListingsLooper。这两个 Looper 然后调用其他一些任务来运行，然后将结果返回给 Looper。我无法弄清楚如何将循环器的结果返回到主要任务以进一步处理数据。

我已经尝试过回调和处理程序，我唯一的成功是使用 pool.awaitTermination 但这似乎很草率。我的理解是最好的方法是使用处理程序，但我无法弄清楚如何让处理程序从循环器发送到主任务。任何有关执行此操作的最佳方法的见解都会非常有帮助。

主线程...

public void onReceive(Context context, Intent intent) {
    Log.d("Plog", "Reciever accounts received alarm");

    DatabaseHandler db = new DatabaseHandler(context);
    List<Contact> contacts = db.getAllContacts();
    Log.d(Plog, "Contacts" + contacts);
    for (Contact cn : contacts) {
        username = cn.getName();
        password = cn.getPassword();
        acb = cn.getBalance();
        strategykey = Integer.parseInt(cn.getStrategy());
        maxamountperautoloan = cn.getMaxperloan();
        int n = 2;
        // Build a fixed number of thread pool
        ExecutorService pool = Executors.newFixedThreadPool(n);

        pool.submit(new ReceiverAccLooper(username, password, acb, maxamountperautoloan, strategykey));

        pool.submit(new GetListingsLooper(username, password, strategykey));

        pool.shutdown();

        //This is where I've been trying to place a handler to get output from the two loopers above

}

Loopers 之一....

public class ReceiverAccLooper implements Runnable{
private String username;
private String password;
private String maxamountperloan;
private String acb;
private Integer strategy;
List<Map<String, String>> result;

public ReceiverAccLooper(String _username, String _password, String _acb, String _maxamountperloan, Integer _strategy){
    this.username = _username;
    this.password = _password;
    this.maxamountperloan = _maxamountperloan;
    this.strategy = _strategy;
    this.acb = _acb;
}

@Override
public void run() {
    Looper.prepare();
    Log.d("Plog", "In Looper " + username + " " + password + " " + maxamountperloan + " " + strategy + " " + acb);

    GetLoansReturn glr = new GetLoansReturn();
    glr.GetLoansRunner(username, password, acb, maxamountperloan);
    result = glr.planetsList;
    Log.d("Plog", username + " Looper Result Owned Listings " + result);

    Object msg = result;
    Message sent = (Message) msg;

    //I've would like to send the message from here....

    Looper myLooper = Looper.myLooper();
    Looper.loop();
    myLooper.quit();

}   

}

Answer 1

在主线程上使用新的处理程序，或创建指定主线程的 Looper。将消息或可运行消息发布到该处理程序应该这样做。