Android 应用数据存储量不断增加 [英] Android app data storage keeps increasing

问题描述

我正在开发一个 android 应用程序，它基本上加载了一个新闻文章列表，并在用户点击时在 web 视图中打开它们.

I am developing an android app that basically loads up a list of news articles and opens them up in a webview upon user click.

我想知道的是，当我在设置->应用程序->管理应用程序"中查看我的应用程序详细信息时，总存储大小不断增加.特别是，数据存储大小正在增加.应用程序大小当然是固定的.

What I'm wondering about is when I look at my app details in 'Settings->Applications->Manage Applications', the Total storage size keeps increasing. Particularly, the data storage size is increasing. The Application size of course, is fixed.

据我所知，共享首选项占用了数据存储空间.我不知道还有什么.在我的应用中，我只有 1 个复选框首选项和一个包含 4 个项目的列表首选项.

From what I know, the sharedpreferences take up data storage. I don't know what else. In my app, I just have 1 checkbox preference and a listpreference with 4 items.

我还实现了 onSaveInstanceState() 方法，我只保存一个 int 值并在 onCreate() 期间再次读取.

I also implemented the onSaveInstanceState() method where I just save a single int value and read up again during onCreate().

增加的数据存储大小是正常的还是我遗漏了什么?也许应该在我的代码中进行一些内存使用清理?

Is the increasing data storage size normal or am I missing something? Maybe there should be some memory use cleanup I should do in my code?

顺便说一下，由于 webview 缓存了一些图像，我的应用程序有相当大的缓存大小，但我不知道是什么导致数据存储不断增加.

By the way, my app has quite a big cache size due to the webview caching some images maybe but I don't know what makes the data storage keeps increasing.

推荐答案

我知道这已经超过 2 年了，但它可能对其他人有用.我发现问题出在 WebView 而不是 SharedPreferences我遇到了同样的问题，并通过以这种方式覆盖 onPause() 方法解决了:

I know that is over 2 years, but it could be useful for someone else. I discovered that the problem resides in the WebView and not in the SharedPreferences I had the same problem and solved by overriding the onPause() method in this way:

private WebView wv;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    wv = new WebView(this);
    setContentView(wv);
    wv.loadUrl("http://www.stackoverflow.com");
}

@Override
protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
    wv.clearCache(true);
}

clearCache 方法采用布尔值允许您指定是否要包含 WebView 存储的磁盘文件的参数.如果启用它，您的数据使用量将显着减少.希望能帮到你！

The clearCache method takes a boolean argument that lets you specify whether you want to include disk files that the WebView stores. If you enable it your data usage will significantly decrease. Hope it helps!

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