应用程序崩溃长​​时间应用时的简历 [英] Application crashes when application resume for long time

问题描述

我创建一个Android应用程序。它拥有从服务器下载过程。它运行良好，直到应用程序运行和维护没有任何崩溃的数据，但现在我坚持了如下

I am creating an android application. It holds a downloading process from server. It's running fine until the application runs and maintains the data without any crashes, but now I am stuck up with the problem as described below

当应用程序通过pressing home键和一个很长一段时间后减少，当我打开应用程序中的所有数据都将被删除。它给了我一个空指针异常;即使ArrayList中值被删除，它给出了一个0大小的数组列表。

When the application minimizes by pressing home button and after a long time, when I open the application all the data in the application are deleted. It gives me a "Null Pointer Exception"; even the ArrayList value are deleted and it gives a 0 sized arraylist.

我只是从主屏幕通过最大化后OnResume打开应用程序，但它并没有调用自己。

I am opening the application after maximizing from the home screen through OnResume only, but it didn't call itself.

我不知道为什么会出现此问题。任何人都可以请建议我一个解决方案，并指出我什么我做错了？

I don't know why this problem occurs. Can anyone please suggest me a solution and point me what am I doing wrong?

推荐答案

是的，这是真的 - 因为@paradx说 - 垃圾收集丢弃的数据，而应用程序是在后台。最后，我找到了一个解决方案，基于@paradx建议，因为数据存储在SQLite的或savedInstanceState

Yes, it's true - as @paradx said - that the Garbage Collector throws away the data while the app is in background. Finally I found a solution based on @paradx suggestion, as data are stored in SQLite or savedInstanceState

只是通过一些静态值通过

Just pass some of static values through the

 intent.putExtra("static key","static value");

然后静态HashMap的都写在一个文件中，供以后使用检索。现在，应用程序不会崩溃了这个问题。

Then static hashmap are written in a file and retrieved for later use. Now the application does not crash for this problem.

我已张贴这一解决方案，从而使他人可能会使用它。

I have posted this solution so that someone might use it.

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