android intentService 并发

Question

当我有一个在 onHandleIntent 完成之前被多次调用的 intentService 时，android 中会发生什么。让我举个例子：

假设我有一个如下所示的意图服务：

public class AService extends IntentService {
    public AService() {
        super("AService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
            // magic happens here but lets pretend it takes 3 mins.
        }

}

现在假设我多次调用此服务，请求是否排队？并发是如何处理的，或者我希望通过在 onHandleIntent 中放置一个同步块来处理它：

synchronized (AService.class) {
            //do stuff here 
        }

Answer 1

Now lets say i call this service multiple times, do the requests get queued ?

是的，假设 "call this service"，您的意思是使用 Intent 调用 startService() 来解析此服务。引用 the documentation:

All requests are handled on a single worker thread -- they may take as long as necessary (and will not block the application's main loop), but only one request will be processed at a time.

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