从preferenceActivity webview.clearCache [英] webview.clearCache from PreferenceActivity

问题描述

我是用我的preferencesActivity扩展preferences.xml。

I have preferences.xml which is used in my extension of PreferencesActivity.

我还有一个preference的，我想用它来清除web视图的高速缓存中的XML。

I have another preference in the xml that I would like to use to clear the cache of a webview.

它有一个关键的，虽然我不知道如何射击webview.clearCache由pressing在我的preferences项...

It has a key though I can't work out how to fire webview.clearCache by pressing the entry in my preferences...

在简单地说，我想从我的preferences屏幕就像人们可以从选项菜单项，运行webview.clearCache（）命令

In a nutshell, I'd like to run the webview.clearCache() command from a my preferences screen like one can from an options menu item.

行，所以我想我必须在preferenceClick使用像西顿preferenceClickListener用，但如何？

OK so I think I have to use something like setOnPreferenceClickListener with onPreferenceClick, but how?

推荐答案

加入解决：

    Preference myPref = findPreference("myPref");
    myPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {

        @Override
        public boolean onPreferenceClick(Preference preference) {
            MyActivity.mWebView.clearCache(true);
            return false;
        }
    });

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