安卓的onCreate（）得到多次调用（而不是我） [英] Android: onCreate() getting called multiple times (and not by me)

问题描述

也有一些是我不太了解现在。

There is something I don't quite understand right now.

我的主要活动类创建一个服务，这将创建一个新的线程等待TCP连接。一旦一个人进来，它会启动一个新的活动：

My main activity class creates a Service, which creates a new thread that waits for a TCP connection. Once one comes in, it will start a new activity:

Intent dialogIntent = new Intent(getBaseContext(), VoIPCall.class);
dialogIntent.putExtra("inetAddress", clientSocket.getInetAddress());
dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
getApplication().startActivity(dialogIntent);

在此之后，这个类的的onCreate（）方法被运行。这将创建2个线程：一个记录和发送数据，另一种接收和播放数据。这些线程拥有了一个真正的while循环。

After that, the onCreate() method of that class gets run. It will create 2 threads: one records and send data, the other one receive and plays data. Those threads have a forever while loop.

由于某些原因，我注意到的onCreate（）那最后一堂课被再次调用，这使我的程序崩溃。我不明白为什么又被称为只有2个线程在运行，没有用户交互。该文件说：称的上是第一次创建活动时。该活动已在运行，我不是要创建它。

For some reason, I notice that the onCreate() of that last class gets called again, which makes my program crash. I do not understand why it is called again as only the 2 threads are running, there is no user interaction. The documentation says: "Called when the activity is first created.". The activity is already running and I am not trying to create it.

可能有人请解释一下我的这种行为？

Could someone please explain me this behavior?

推荐答案

Android将重建后的某些设备配置更改你的活动。一个这样的例子是取向。你可以点击这里阅读... <一href="http://developer.android.com/guide/topics/resources/runtime-changes.html">http://developer.android.com/guide/topics/resources/runtime-changes.html

Android will recreate your activity after certain "device configuration changes". One such example is orientation. You can read more here... http://developer.android.com/guide/topics/resources/runtime-changes.html

也许东西在你的线程做一些东西，被认为是一种配置更改？

Perhaps something in your threads is doing something which is considered a configuration change?

如果是这样的话，你可能会发现它有用的扩展应用程序类，而不是做你的初始化那里。看到这个帖子... 在旋转的Andr​​oid 活动启动

If that's the case you might find it useful to extend the Application class instead and do your initialization there. See this post... Activity restart on rotation Android

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