我有一个特殊的情况： 由广播接收器启动的服务启动的活动。我想，这使本次活动的通信回服务。我选择使用AIDL，使之成为可能。一切似乎都工作良好，除了 bindService（）方法调用的onCreate（）的活动。 bindService（），其实，抛出一个空指针异常，因为 onServiceConnected（）永远不会被调用，而 onBind（）方法该服务是。反正 bindService（）返回true。 因为它启动活动的服务是明显活性。 我知道，从一个服务调用的活动可能听起来很奇怪，但不幸的是这是在服务的语音识别的唯一途径。

I have a particular situation: a service started by a broadcast receiver starts an activity. I want to make it possible for this activity to communicate back to the service. I have chosen to use AIDL to make it possible. Everything seems works good except for bindService() method called in onCreate() of the activity. bindService(), in fact, throws a null pointer exception because onServiceConnected() is never called while onBind() method of the service is. Anyway bindService() returns true. The service is obviously active because it starts the activity. I know that calling an activity from a service could sound strange, but unfortunately this is the only way to have speech recognition in a service.

在此先感谢

推荐答案

我无法弥补确切的问题出你的描述，所以我要在这里猜！

I can't make up the exact problem out of your description, so I'm going to guess here!

如何 bindService（）抛出一个 NullPointerException异常？这可能（/应）发生的唯一方法是，当你不提供服务或 ServiceConnection 监听器。

How can bindService() throw a NullPointerException? The only way this could (/should) happen is when you don't supply a Service or a ServiceConnection listener.

bindService（）不能把一个 NullPointerException异常 ，因为 onServiceConnected（）不叫。以 onServiceConnected（）通话是产品 bindService（）。

bindService() can't throw a NullPointerException because onServiceConnected() isn't called. The call to onServiceConnected() is a product of bindService().

所以我猜你调用一个 AIDL 法，服务之前实际上保税？

So I guess you are calling a AIDL method, before the Service has actually bonded?