Android webView 保存状态 [英] Android webView saveState

问题描述

我有一个带有 3 个标签的标签主机.在每个选项卡中都有一个 webiview.当我单击一个选项卡时，即使我以前去过那里，webview 也需要重新加载"，它还没有被保存.有什么办法可以保存 webview 吗?

I have a tabhost with 3 tabs. In each of these tabs there is a webiview. When i click a tab the webview need to "reload" even when i have been there before, it have not been saved. Is there any way to save the webview ?

推荐答案

这可以通过在您的活动中覆盖 onSaveInstanceState(Bundle outState) 并从 webview 调用 saveState 来处理:

This can be handled by overrwriting onSaveInstanceState(Bundle outState) in your activity and calling saveState from the webview:

@Override
protected void onSaveInstanceState(Bundle outState) {
    webView.saveState(outState);
    super.onSaveInstanceState(outState); 
}

当然，在 webview 重新膨胀之后，在你的 onCreate 中恢复它:

Then recover this in your onCreate after the webview has been re-inflated of course:

@Override
public void onCreate(final Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.blah);
   WebView webview = (WebView)findViewById(R.id.webview);
   if (savedInstanceState != null)
      webview.restoreState(savedInstanceState);
   else
      webview.loadUrl(URLData)
}

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