我已经在我的应用程序中的web视图。当用户登出我的应用程序，我想删除所有缓存资源的WebView可能已经创建。看着一个模拟器，我看到了以下文件：

I've got a WebView in my app. When the user logs out of my app, I'd like to delete all cached resources the WebView may have created. Looking at an emulator, I see the following files:

/data
  /data
    /com.example.myapp
      /cache
        /webviewCache
          bunch of files here..
      /databases
        webview.db
        webviewCache.db

有没有系统调用，我可以用它来清除/高速缓存及/数据库中的所有元素，或者我们应该这样做手工？我担心做手工只是因为我不知道有什么新的文件的WebView背后可能离开的Andr​​oid未来的版本，所以我不会肯定我真的清除一切为了用户。

Is there any system call I can use to clear all the elements in /cache and /databases, or should we do that manually? I'm worried about doing it manually just because I don't know what new files WebView may leave behind in future versions of android so I won't be sure I'm really clearing everything for the user.

推荐答案

试试这个

mWebView.clearCache(true);
mContext.deleteDatabase("webview.db");
mContext.deleteDatabase("webviewCache.db");